标签归档：Sanitary pipe fittings

North High valve: Advocacy to develop new products to seek win-win

发表于 2012/01/30 由 admin

发表在 More | 标签为 pipe fitting suppliers, Sanitary pipe fittings, stainless steel elbow | 评论关闭

Heat treatmen t technology: dual-phase steel castings heat-treated area

发表于 2012/01/30 由 admin

a href=http://www.steel-pipe-fittings.net/stainless-steel-elbow/ target=_newimg src=http://www.steel-pipe-fittings.net/upfiles/-Bend-ElbowBend-Elbow-main.jpg border=0 title=stainless steel elbow //abrdiv style=BACKGROUND: #fbf0fa;span style=FLOAT: right;font-size:10px;Web Design And Seo For www.china-webdesign.com/spandiv style=FONT-SIZE: 16px;a href=http://www.steel-pipe-fittings.net/stainless-steel-elbow/ target=_blankstainless steel elbow/a – China Manufacturer/divdiv style=line-hight: 8px; FONT-SIZE: 12px;Thank you for inquiry my stainless steel elbow, Tel:+86-577-85989898, Email:JD@CNJIEDE.CN/divdiv style=COLOR: #0e774a; FONT-SIZE: 12px;http://www.steel-pipe-fittings.net/stainless-steel-elbow//div/divbrbrpInvestment casting is the final product as copies, the paraffin-like material pressed into precise smooth wax, the wax coating on the refractory layers, drying the slurry to be formed after shell hardening, and then solidified in the shell-type melt the wax mold to make out, then make solid shell roasting, drying, and finally then pouring molten liquid metal into the shell, the shell of liquid metal in the cooling, freezing after a smooth precision castings. This casting process can produce sophisticated, close to the final shape of the product, process, or very little time to process the metal parts can be used directly or fine arts and crafts, so it is a liquid near net shape metal forming processes. Compared with the sand casting method, with the following characteristics:/p
pnbsp;nbsp;nbsp; 1 casting dimensional accuracy, surface roughness is low, you can achieve little or no machining process;/p
pnbsp;nbsp;nbsp; 2 can be cast very light weight thin-walled parts or castings; particularly suitable for casting with a pattern, text or trench type casting;/p
pnbsp;nbsp;nbsp; 3 can be particularly complex castings foundry, or a combination of many parts, welding./p
pnbsp;nbsp;nbsp; China is the birthplace of investment casting technology one. According to research, in the Spring and Autumn Period dating back 2,500 years ago there was already a lost wax casting. Suizhou in Hubei in 1978, unearthed the statue and the tomb plate is lost wax casting early masterpiece. Modern investment casting process is the formation of the early 20th century. During World War II, the defense, aerospace development, the United States, Britain and other countries using the first method of investment casting production jet engine turbine blades. Since the 1980s, around the world casting production, value, quality, and has great growth and improve the current precision casting a positive, large, complex, components in the direction of the entire cast./p
pnbsp;nbsp;nbsp; China s investment casting in the 1950s began to be used in industrial production, first from the aerospace sector and gradually developed into all industrial sectors, has been widely used./p
pnbsp;nbsp;nbsp; Mainland China casting industry development/p
pnbsp;nbsp;nbsp; 1 precision casting industry in China the size of/p
pnbsp;nbsp;nbsp; Although the casting industry in China in the mid-1950s has been established, and gradually promote the application, but the rapid development really is in the early 1990s, ten years since, especially in recent years. At present, China has two levels of investment casting process, the first class enterprise, medium-temperature mold materials and molding silica or ethyl silicate binder system shell investment casting process, that is internationally accepted investment casting process . The second category is the use of low modulus material and sodium silicate binder system shell process, the casting dimensional accuracy and surface roughness worse than the first, reach the level of international investment casting. According to the mainland, it is still used in the mold temperature or low temperature molding material, the surface layer silica sol, water glass reinforcement system shell layer composite technology, can ensure high dimensional accuracy and surface quality of lower costs. According to statistics, in 2001 the first class manufacturers use more than 350, the annual output 75,000 tons, annual output value of 3.28 billion yuan; second process manufacturers (including composite process) over 1350, annual output of nearly 20 million tons, value of 1.5 billion. 2002, production reached 321,000 tons more, the output value reached 5.49 billion yuan. Production in 2002 was 6.4 times in 1988. The output is 330 million in 1988 to 16.6 times./p
pnbsp;nbsp;nbsp; (2) the level of technology, casting quality and product categories to see from the level of use and quality/p
pnbsp;nbsp;nbsp; At present, China Precision Casting production of castings are mainly: the use of first class gas turbine technology and the production of castings for air quality reached the international level, there are 50 manufacturers, the annual output 5000 tons, annual output value of 400 million yuan; using the first and complex process of commercial production of precision castings, and its quality is lower than the standard inspection items and aviation parts, there are 300 or so, the annual output 70,000 tons, annual output value of 2.88 billion yuan; production process using the second category of dimensional accuracy and surface roughness requires low investment casting casting blank pieces, there are 1350 or so, the annual output of nearly 20 million tons, annual output value of 1.5 billion. Castings from three quality levels of the weight distribution can be seen, high levels of air casting yield little, only 1.8% of total general commercial casting 25.6%, and the quality not up to international standards, water glass casting accounted for 72.6% of total production. General and the United States, Britain, Europe and Japan and other advanced countries and regions castings compared to the market structure, there is a clear gap between the proportion of high-quality casting is still very low./p
pnbsp;nbsp;nbsp; Nevertheless, China investment casting process in all aspects, or has made substantial progress, casting a greater impact on the development of new materials, new processes, new equipment, there are many, such as water-soluble core, ceramic core, metal improvements, large-scale investment casting technology, titanium investment casting, directional solidification and single crystal casting, filtering, hot isostatic pressing, rapid prototyping, computer applications, and casting in the development of mechanization and automation technologies to make casting can not only produce small castings, and can produce large castings, the largest size of the outline of Castings nearly 2m, while the minimum wall thickness less than 2mm. At the same time has become more sophisticated castings, in addition to linear tolerances, the parts can achieve high geometric tolerances. Casting surface roughness values ??are also more can be achieved Ra0.4um./p
pnbsp;nbsp;nbsp; 3 matching business gradually complete/p
pnbsp;nbsp;nbsp; As the casting industry, the rapid development of the relevant supporting business led to rapid development. Mainly in the mold processing, equipment manufacturing, raw material production. According to preliminary statistics, the manufacture of processing equipment based professional casting mold factory, casting factory has been concentrated in areas such as Guangdong, Shandong and Wuhan formation, specialized equipment manufacturers everywhere; casting raw material production and suppliers has grown to nearly a hundred, and because first casting mold material needed for the production process, zircon powder, belt and other accessories, and some advanced equipment not yet produced domestically, imported from abroad each year the number of with tons of raw and auxiliary materials. However, due to the conditions of China s basic industries and resources compared with other developing countries, much better, so casting service development, will be extended to Southeast Asian countries and the world and develop their markets./p
p4 industry and the gap between international standards and the advantages and compared to the level of international investment casting/p
pnbsp;nbsp;nbsp; Casting industry in China, the application process to produce first class air casting low production, high-quality precision castings are not many, most of the production of less precision pipe fittings, hardware, harness and auto parts, alloy single species, especially the high-temperature alloys and non-ferrous alloys small proportion of China s casting level is still very backward./p
pnbsp;nbsp;nbsp; However, China s low labor costs, raw materials rich in prices of the products account for a large advantage, as long as product quality, there is still great in the international competitiveness. Meanwhile, the rise of the domestic high-tech industry, mechanical industry, the precision, miniaturization, and the construction industry have been put forward some of the regulations and local laws and regulations, and stainless steel castings with bronze instead of cast iron pipe fittings, casting industry for the unprecedented business opportunities./p
pnbsp;nbsp;nbsp; Meanwhile, China s private sector to join the casting and rapid development, China casting industry has injected fresh vitality, has become a national casting industry s most powerful, most realistic competitors. Such enterprises from the 1980s to the early 1990s, mostly in the form of joint ventures and wholly-owned, from Taiwan, Japan, the introduction of the system silica shell craft materials, mainly in coastal areas and the surrounding areas, the majority of its products sold in international markets, but also because of its advanced systems, flexible, efficient management, so the efficiency is very good. Although only 20 years of development, but the casting industry in China has become a commitment to force the export business. On the other hand, because of its high level of equipment and facilities, processes and quality standards in the country an advanced level, basically meeting the general level of foreign, direct export orders and market alliances, product value remained at a high level, the basic international standards. Or from both the technical level in terms of marketing channels, they are state-owned enterprises casting strong competitors. The Precision Casting Co., Ltd., Dongfeng to manufacturers, represented part of the second and third class technology companies in recent years, regardless of technology level, product quality and labor productivity, advance to the international market is accelerating and will continue to raise the level of Chinese casting industry positive efforts./p
pnbsp;nbsp;nbsp; In recent years, steel castings for low temperatures increased, many of which are low temperature pressure parts, casting most of these low-temperature impact toughness, there are strict requirements./p
pnbsp;nbsp;nbsp; In all the requirements of steel castings in steel plants for many terms, is the most difficult compliance impact toughness. Usually taken to improve the impact toughness of measures no more than the following:/p
pnbsp;nbsp;nbsp; ◆ reduce the carbon content;/p
pnbsp;nbsp;nbsp; ◆ an appropriate increase in manganese-carbon ratio (Mn / c);/p
pnbsp;nbsp;nbsp; ◆ adding alloying elements such as Ni, Cr, Mo, etc.;/p
pnbsp;nbsp;nbsp; ◆ reduce the sulfur content;/p
pnbsp;nbsp;nbsp; ◆ reduce sulfur in steel than in mixed material to improve the form of sulfide inclusions;/p
pnbsp;nbsp;nbsp; ◆ the use of refining processes;/p
pnbsp;nbsp;nbsp; ◆ improved heat treatment/p
pnbsp;nbsp;nbsp; The above measures, the improvement of heat treatment is the preferred solution should be valued, because:/p
pnbsp;nbsp;nbsp; ◆ casting process does not lead to significant adjustments;/p
pnbsp;nbsp;nbsp; ◆ do not have to add equipment;/p
pnbsp;nbsp;nbsp; ◆ little increase in production costs./p
pnbsp;nbsp;nbsp; In 1978, EGNisbett, RDASP and DEMorgan, who published a two-phase region of forged carbon steel for heat treatment study. Nuclear power plants with carbon steel forging, heat treatment by the two-phase region, the impact toughness increased about twice the tensile strength only slightly./p
pnbsp;nbsp;nbsp; Since then, Canada s steel industry and steel enterprises in Europe some of the heat treatment of the two-phase region studied, and satisfactory results./p
pnbsp;nbsp;nbsp; 1 What is the two-phase heat treatment area/p
pnbsp;nbsp;nbsp; The two-phase zone casting heat treatment, is in the casting of the original implementation on the basis of normalizing or quenching, coupled with the heat only to the two-phase region to the second normalizing or quenching./p
pnbsp;nbsp;nbsp; Two-phase zone between the A1 and A3 steel in this range are not fully austenitic, organized by the alpha; plus gamma; two-phase composition, so called two-phase region. No two-phase eutectoid steel area, so this deal only applies to sub-eutectoid steel. Carbon steel, the lower range of its two-phase region of the more wide./p
pnbsp;nbsp;nbsp; Microstructure of ferrite plus pearlite for the sub-eutectoid steel, heated to a temperature above the A1, the phase change of the organization as follows:/p
pnbsp;nbsp;nbsp; a. just over A1 (727 ℃)/p
pnbsp;nbsp;nbsp; Remained essentially unchanged ferrite, pearlite and gradually transformed into austenite. The new group of austenite grain boundaries in pearlite nucleation, pearlite in a thick sheet of carbon and become spherical. As the transition progresses, the carbon to continue to grow from the spherical carbon diffusion in austenite. Thus, in the original ball of light in vivo formation of new ferrite grains. Pearlite transformation time this happens, because the steel alloying elements and temperature varies, but in the two-phase region approximately 1 hour after completion of 90%. Pearlite formed from the austenite, its carbon content close to the initial eutectoid composition (ie, about 0.77%)./p
pnbsp;nbsp;nbsp; b. heated to high temperature two-phase region/p
pnbsp;nbsp;nbsp; If the steel is heated to higher temperatures, the austenite region will be further expanded to the original ferrite, austenite carbon content will be gradually reduced to close to the steel composition. Original ferrite may form a small and isolated austenite./p
pnbsp;nbsp;nbsp; Cast steel in the two-phase region when warm and then cooled, the resulting lower body and transformed into Austria pearlite and ferrite. The main effect of treatment is to refine the grain structure, which can improve the toughness of the steel./p
p(2) heat treatment points/p
pnbsp;nbsp;nbsp; Important steel castings, during the heat treatment should be a uniform prior to annealing, to eliminate widmanstatten. Homogenization temperature is generally above A3 100-150 ℃, holding at this temperature after furnace cooling. General Steel Castings, you can not make this deal./p
pnbsp;nbsp;nbsp; In addition to the special requirements of steel castings, in general, the use of annealing, normalizing or quenching and other heat treatment process./p
pnbsp;nbsp;nbsp; The use of annealed steel castings, the requirements on the mechanical properties are generally not high, this type of casting, do not deal with the two-phase region./p
pnbsp;nbsp;nbsp; The use of normalizing or quenching of steel castings, such as the requirement to improve the impact properties, two-phase region can be dealt with experimental research, the following observations can be used as a reference test./p
pnbsp;nbsp;nbsp; a. the use of normalizing the situation/p
pnbsp;nbsp;nbsp; Carbon steel castings and low alloy steel castings, generally using normalizing or normalizing, tempering. Normalizing, the heating temperature should be in A3 above 30-50 ℃, holding time determined by the casting section thickness, usually every 25mm thickness for 1 hour./p
pnbsp;nbsp;nbsp; For two-phase zone heat treatment, casting will be handled by normalizing again heated to more than A1, A3 below a certain temperature, holding followed by air cooling. Specific values ??for A3 carbon steel and alloy element content is different, and can be found from the heat treatment manual, two-phase region deal with the specific temperature values ??determined by the test results can be used in the laboratory sample treated differently, and thus select the best temperature./p
pnbsp;nbsp;nbsp; After the need to temper such as normalizing, the tempering process should be carried out after the two-phase region./p
pnbsp;nbsp;nbsp; b. the case of using quenching/p
pnbsp;nbsp;nbsp; High requirements on the mechanical properties of low alloy steel castings, should quenching process, quenching, including quenching and tempering two processes./p
pnbsp;nbsp;nbsp; Cast steel quenching, the heating temperature is usually in A3 above 20-30 ℃./p
pnbsp;nbsp;nbsp; Quenched and tempered steel for two-phase heat treatment area should be carried out after quenching. Dealing with the above normalizing the selected temperature the same in the selected temperature after thermal quenching, quenching medium and the first quenching the same.br //p

发表在 More | 标签为 pipe fitting suppliers, Sanitary pipe fittings, stainless steel elbow | 评论关闭

Ho Chak environmental protection: drinking water, a new era of real skill differences refining

发表于 2012/01/24 由 admin

a href=http://www.steel-pipe-fittings.net/stainless-steel-elbow/ target=_newimg src=http://www.steel-pipe-fittings.net/upfiles/-Bend-ElbowBend-Elbow-main.jpg border=0 title=stainless steel eblow //abrdiv style=BACKGROUND: #fbf0fa;span style=FLOAT: right;font-size:10px;Web Design And Seo For www.china-webdesign.com/spandiv style=FONT-SIZE: 16px;a href=http://www.steel-pipe-fittings.net/stainless-steel-elbow/ target=_blankstainless steel eblow/a – China Manufacturer/divdiv style=line-hight: 8px; FONT-SIZE: 12px;Thank you for inquiry my stainless steel eblow, Tel:+86-577-85989898, Email:JD@CNJIEDE.CN/divdiv style=COLOR: #0e774a; FONT-SIZE: 12px;http://www.steel-pipe-fittings.net/stainless-steel-elbow//div/divbrbrpAs we all know, the quality of drinking water quality and people s health are closely related. World Health Organization, 80 percent of the world s disease, 1 / 3 of the deaths, 80% of cancers are related to water pollution. Our daily drinking water are mainly two ways: First, the tap water. Water pipelines are large metal tube, has been laid for many years, water flowing through the pipeline and storage tank when contaminated, heavy metals and bacteria levels. Boil water, can only kill some bacteria, the water can not remove heavy metals and chemicals, these substances remaining in the human body, harm to human health./p
pbr /nbsp;nbsp;nbsp; Another is the quot;bottled water + drinking fountains.quot; However, manufacturers of bottled water fish in the market, some no-name, unlicensed manufacturers of medical waste or recycling of used bottles mounted plasma PC production and shoddy food-grade barrels, and direct filling unclean water, a variety of black drum, false water flooding the market./p
pbr /nbsp;nbsp;nbsp; Even if you choose regular qualified manufacturers of water, really safe to drink, but the bucket of water will Kaifeng after contact with air, producing a large number of bacteria, the best drink for 24 hours. Also, drinking fountains have not been timely because disinfection, cleaning, has become a breeding ground for bacteria and viruses!/p
pbr /nbsp;nbsp;nbsp; quot;Unlike first-party municipal water supply pipe and the second side of bottled water, bottled water suppliers, environmental groups rely on Ho Chak proprietary advanced technology, revolutionary create aquot; Ho Chak flowing water station quot;magnetic net consumption of the terminal Water service model, is committed to providing the public with a safer, more vibrant, healthier, more convenient water purification services. quot;Ze Hao Xiao, president of environmental protection described above./p
pbr /nbsp;nbsp;nbsp; Ho Chak flowing water station with an international leader in APO + water purification technology, adsorption by eight water purification filtration and reverse osmosis, can effectively remove heavy metals, organic matter, bacteria, viruses and other contaminants, and solve the traditional bottled water, two secondary contamination, bacteria, false water flooding and other defects. Lead China into the new era of third-party health drinking water is currently the best alternative to bottled water, drinking water suppliers./p
pbr /nbsp;nbsp;nbsp; Model differentiation/p
pbr /nbsp;nbsp;nbsp; Ho Chak environment focused on core patented technology of ozone in the clean technology applications, including sewage treatment, air purification, and running water to Ho Chak terminal station as the core product water./p
pbr /nbsp;nbsp;nbsp; Shaw described above, ozone is a strong oxidant excellent environmental, through the air in oxygen (O2) to generate ozone, can sterilization, degradation of organic residue, odor removal, bleaching, etc., and ultimately reduced to oxygen, environmentally friendly and completely non-polluting. The company has nearly 30 patents, has developed dozens of products to meet market demand, and with their own products and services to end customers in good reputation, the majority of users a high degree of recognition, was named the 2008 China Water Industry quot;Ten people concerned about the brandquot; and quot;China Top Ten disinfection equipment market recognized brandquot;, quot;key industry information and recommended brandquot;, quot;food brand in the industryquot; and so on./p
pbr /nbsp;nbsp;nbsp; April 08, Ho Chak defeated several well-known environmental multinationals, to undertake the quot;Beijing Olympic athletes, catering factoryquot; between food processing and food air purification and disinfection of water projects; Subsequently, a national space program, quot;Moon space program quot;ground-based technology provider for the satellite assembly shop, Branch laboratories, workshops and other sophisticated electronic equipment to provide space for air purification and water purification equipment and technical support./p
pbr /nbsp;nbsp;nbsp; Sewage treatment and air purification market has been recognized by many, why switch to terminal water? quot;The company has not deviated from the main industry, sewage treatment is to solve the corporate citizen emissions, the terminal water is to solve the society people of the water problem, after the company has been related to technical reserves, the launch of the product is ripe . quot;Xiao described above, purification of water terminal is present – kind of idealized water ways, the United States and other developed countries in the penetration rate of 70% -80%. With the deterioration of environmental pollution and public health of water for the pursuit of aquaculture in China has been classified as quot;light industry, one of the top ten in the 21st century.quot;/p
pbr /nbsp;nbsp;nbsp; However, the current market price ranging from water purification equipment, terminal 35 thousand dollars to more than a million, if they consider drink straight regular filter replacement costs and other parts, expensive, how expensive the technical conditions , both to ensure product quality and allow more people to experience a healthier, more fresh water?/p
pbr /nbsp;nbsp;nbsp; After repeated tests, a new business model there, and that is: different from the traditional business selling water purification equipment, Ho Chak provide a healthier environment, more vivid, more secure, more convenient experience and service water ./p
pbr /nbsp;nbsp;nbsp; Consumers do not go out and buy expensive terminal water purification equipment, as long as the application account to pay a certain amount, you can get a free flowing water stations Ho Chak right to use water to buy water-filled follow-up card, the company provides free replacement of supplies, free for life maintenance, life-long free onsite testing of drinking water quality and many value-added services./p
pTechnical differences/p
pbr /nbsp;nbsp;nbsp; As the National Space quot;Moon Projectquot; ground service agents and the Fourth World Eminence Chinese Business Official drinking water suppliers, environmental groups in Ho Chak few short years, the company won the China Mobile Beijing, China Shanghai Petrochemical Company and all of its gas stations, Brilliance, such as home, Peking University and other large enterprises customers and home users, and in the core city of the real estate industry, pharmaceutical industry, health care, beauty salon industry, catering and entertainment industry, tea industry, tea, etc. market share first. This fully proves that Ho Chak flowing water station and excellent quality, APO + excellent advanced water purification technology./p
pbr /nbsp;nbsp;nbsp; Ho Chak flowing water is a terminal station equipment to make water, pure water is equivalent to a small factory to meet quot;that made the drink,quot; the drinking water needs, ideal for enterprises and home users./p
pbr /nbsp;nbsp;nbsp; The main working principle is to exert some pressure on the water, the water molecules and ionic minerals through the reverse osmosis membrane, while the majority of inorganic salts dissolved in water (including heavy metals), organic matter and bacteria and virus can not be thoroughly through reverse osmosis membrane, so that the penetration through the pure water and the concentration of water can not penetrate the strict separation; reverse osmosis membrane only 0.0001 micron pore size, and the virus is generally 0.02-0.4 micron in diameter, the diameter of ordinary bacteria of 0.4- 1 micron. In addition, Oxygen dosing every eight hours, the activation of water molecules, increase dissolved oxygen, to prevent growth of bacteria. Water quality not only in line with national quot;drinking water health standardsquot;, but also through the EU water quality standards testing laboratory, to obtain the European Union CE quality certification, access to enter the international market, quot;pass.quot;/p
pbr /nbsp;nbsp;nbsp; In 2008 Ho Chak flowing water station project with its leading technology, innovative sales model, stable returns has won the quot;China 100 Most Investment Valuequot; and quot;international investment value of projects most 100.quot; However, the market competition is fierce, and it is changing, Ho Chak worried over other more powerful copy their own marketing business model?/p
pbr /nbsp;nbsp;nbsp; The face of doubt, Shaw stated very confidently said, Ho Chak environmental protection are not afraid of competition, with competition, there is great development of the industry, but also not afraid to imitate, Ho Chak environmental protection are changing every day. In particular, the technological breakthroughs and lead, is our unwavering in upholding the./p
pbr /nbsp;nbsp;nbsp; I think the industry has two threshold, the first is technology, including product shape, water quality, professional certification. We use the world s leading APO + water purification technology and smart card chip technology, similar products from research to market quot;at least two years of the cyclequot;, and Ho Chak environmental improvement has been continuously developing the technology./p
pbr /nbsp;nbsp;nbsp; The second is quot;preconceivedquot; advantage. Enterprises in Shanghai, Beijing, Shenzhen, Guangzhou, a firm foothold in four cities, consumers have running water stations on Ho Chak had some dependence, the next step is to expand to the nation. This scale will be quot;shielded part of the follow suit.quot;/p
pbr /nbsp;nbsp;nbsp; It is understood that Ho Chak won national patent technology of environmental protection and more than 30 foreign patents, won the quot;AA grade high-tech enterprisequot;, quot;AAA grade quality and integrity unitquot; and quot;National High-tech health products,quot; and many other honorary titles./p
pbr /nbsp;nbsp;nbsp; Not long ago, Ho Chak formally adopted by the Shanghai Environmental Protection Science and Technology Commission, Shanghai Municipal Finance Bureau, Shanghai Tax Bureau, Shanghai Municipal Local Taxation Bureau jointly identified, was named as the second batch of high-tech enterprises in Shanghai, Shanghai awarded quot; High-tech Enterprise Certificate quot;(Certificate No.: GR200831001095). In addition, Ho Chak was the only environmental group to obtain a certification of software products (with software intellectual property) of the water appliance business./p
pbr /nbsp;nbsp;nbsp; Marketing differentiation/p
pbr /nbsp;nbsp;nbsp; For any business, marketing has always been the core issue. Shaw stated frankly, every city, the first three months of opening up is always difficult, after three months, 60% of customers will be by word of mouth publicity, quot;take the initiative to come.quot;/p
pbr /nbsp;nbsp;nbsp; Shanghai is the Ho Chak green quot;capturequot; the first city. Intervention in the market just when the Ho Chak running water stations and lack of brand awareness, quot;often lead to others with suspicion.quot; To this end, the company launched a three-month test marketing, the method is simple, quot;one on one to go to business sales, a sample from your customers after the installation of equipment to convince him, then sent him dozens of liters of water, he was satisfied with the trial and then recharge.quot; . This is different from the traditional first advanced water purification company stores, selling equipment, in the water industry in China started the quot;free experiential marketingquot; first of its kind./p
pbr /nbsp;nbsp;nbsp; Ho Chak Hongtusanbao is the first truly environmentally friendly customers. Grand the company installed a fountain shop shortly after shop on Shanghai s 30-some-all fitted with a quot;scale effect immediately became apparent.quot; Same situation also occurred in the co-Hang, Dixon pass, who Wenfeng other chains. quot;Some customers in the shop to see our machines, like them, will require the installation calls Xiao explained above./p
pbr /nbsp;nbsp;nbsp; That the development plan in 2009, Xiao stated that Ho Chak environment will consistently pursue excellence in product quality, to ensure consumer safety and health. Each launch a new product, always at home and abroad have gained certification, before the market./p
pbr /nbsp;nbsp;nbsp; Meanwhile, Xiao Shujiang tone, Ho Chak many without running water station franchisees successful support and help, such as Shanghai, Beijing, Shenzhen, Guangzhou, Xiamen, Fuzhou, Chengdu, Suzhou and other places of the franchisee, has been very insistent and Ho Chak environmental cooperation. He believes that to attract so many fixed franchisees, not only Ho Chak running water station of its own products and services, brand promotion measures, but also with the franchisee is always a win-win distribution strategy./p
pbr /nbsp;nbsp;nbsp; 2009, Ho Chak environmental protection will increase the franchisee to support efforts to strengthen corporate branding and business training guide. Meanwhile, Ho Chak environmental and Technical College was established, opening the first phase of training has been account manager. Thereafter, the franchisee will continue to organize training./p
pnbsp;/p

发表在 More | 标签为 Sanitary pipe fittings, stainless steel eblow, stainless steel reduce | 评论关闭

Project: Proton pump Poly Xinyu Middle School in the application of Taishan

发表于 2012/01/20 由 admin

a href=http://www.steel-pipe-fittings.net/stainless-steel-reducer/ target=_newimg src=http://www.steel-pipe-fittings.net/upfiles/-Reduer_Reduer_172_127-main.jpg border=0 title=stainless steel reduce //abrdiv style=BACKGROUND: #fbf0fa;span style=FLOAT: right;font-size:10px;Web Design And Seo For www.china-webdesign.com/spandiv style=FONT-SIZE: 16px;a href=http://www.steel-pipe-fittings.net/stainless-steel-reducer/ target=_blankstainless steel reducer/a – China Manufacturer/divdiv style=line-hight: 8px; FONT-SIZE: 12px;Thank you for inquiry my stainless steel reducer, Tel:+86-577-85989898, Email:JD@CNJIEDE.CN/divdiv style=COLOR: #0e774a; FONT-SIZE: 12px;http://www.steel-pipe-fittings.net/stainless-steel-reducer//div/divbrbrp1, Project Overview: Taishan is located southwest of the Pearl River Delta, adjacent to Hong Kong and Macao, a vast territory, with a total area of ??3286 square km. Jurisdiction over two test areas, 20 towns and a Chinese farm, divided into 503 villages (neighborhood) committees, 3655 villages. The city s 101 million population, living abroad and Hong Kong, Macao, Taiwan and other 92 countries and regions, more than 1.3 million folks Taishan membership, quot;the country s first hometown, while the school is located in Xinyu City, Taishan Taishan political Transportation Center, and Country Garden nearby, The school has 3,500 students, is one of key middle schools in Guangdong Province./p
pnbsp;/p
pTaishan City Xinyu School/p
pClick here to view all news picture/p
pnbsp;nbsp;nbsp; 2, design/p
pnbsp;nbsp;nbsp; ▲ design parameters:/p
pnbsp;nbsp;nbsp; ? Climatic conditions: consider harsh winter conditions to meet water supply requirements, the minimum design temperature at 10 ℃;/p
pnbsp;nbsp;nbsp; ? Water temperature: the minimum water temperature of 10 ℃, 45 ℃ temperature rise according to the design;/p
pnbsp;nbsp;nbsp; ? Water temperature: Hot water rated temperature 55 ℃;/p
pnbsp;/p
pnbsp;/p
pProton pump units together/p
pClick here to view all news picture/p
pnbsp;nbsp;nbsp; ? Design approach: distressed with warm water heating cycle./p
pnbsp;nbsp;nbsp; ? Unit normal average working time of 10 to 19 hours per;/p
pnbsp;nbsp;nbsp; Host device technical parameters (DKFYJT10.0-36.8II)/p
pThermal rated capacity of water supply water temperature input power to apply to ambient temperature with protection class rated pressure pipe running out of the net weight of the noisebr /36.879Kw 800L / h 55 OC 9.2Kw 380V IPX4 -10 ~ 45OC 0.7MPa DN40 59dB (A) 203kg/p
pbr /nbsp;nbsp;nbsp; ▲ known conditions:/p
pnbsp;nbsp;nbsp; Taishan City Xinyu school, the school has 3,500 students, 5 dormitory buildings, each designed according to 25L!/p
pnbsp;nbsp;nbsp; 3,500 times; 25L = 87500L = 87.5 ton: not at the same time taking into account the day with hot water, so water use by 80% of the design:/p
pnbsp;nbsp;nbsp; 87500L times; 0.8 = 70000 = 70 吨/p
pnbsp;▲ equipment selection:/p
pnbsp;nbsp;nbsp; Based on the above water: poly Teng Nanhai Environmental Protection Equipment Co., Ltd. are as follows/p
pnbsp;nbsp;nbsp; According to the formula: Q = C times; M times; △ T/p
pnbsp;nbsp;nbsp; Stated: Q: heat load Kcal/p
pnbsp;nbsp;nbsp; C: specific heat of water 1Kcal/kg? OC/p
pnbsp;nbsp;nbsp; M: on water use kg or L/p
pnbsp;nbsp;nbsp; △ T: water temperature (55-10 = 45) OC/p
pnbsp;nbsp;nbsp; Q = 1 times; 70 times; 1000 times; 45OC/p
pnbsp;nbsp;nbsp; Q = 3150 times; 103Kcal/p
pnbsp;nbsp;nbsp; Proton brand air source heat pump water heater: DKFXJT10.0-36.8II unit, ambient temperature 10 ℃ in a water temperature of 15 ℃ water production units per hour per hour water production 750 times; 0.709 = 531.7L/p
pnbsp;nbsp;nbsp; DKFXJT10.0-36.8II units per hour heat production are:/p
pnbsp;nbsp;nbsp; 531.7L times; 1 times; (55-15) ℃/p
pnbsp;nbsp;nbsp; = 21.2 times; 103Kcal `/p
pnbsp;nbsp;nbsp; Unit is required:/p
pnbsp;nbsp;nbsp; Q divide; 20.011 times; 103Kcal `divide; 16h/p
pnbsp;nbsp;nbsp; = 3150 divide; ??21.2 divide; 18h/p
pnbsp;nbsp;nbsp; asymp; 8.2 units = 8/p
pnbsp;nbsp;nbsp; Our selection of poly Proton brand air-source heat pump water heater: DKFXJT10.0-36.8II unit and is equipped with 8 8 8 tons of stainless steel water tank insulation to meet user requirements./p
pnbsp;nbsp;nbsp; Project Features: works with a brush with IC IC card water, waste water can reduce the students. The use of return water system, the students out of hot water for three seconds when./p
pnbsp;nbsp;nbsp; ▲ hot water unit system description/p
pnbsp;nbsp;nbsp; Host: The compressor is a machine used in the United States imports Copeland compressors, aircraft performance, stability, low noise, the technical indicators are better than other similar products, operating 15 years without a major failure, the electronic valve is well-known U.S. brands/p
pnbsp;nbsp;nbsp; ALCO. Unit at the factory prior to sealing the interface to go through testing, there is no refrigerant leakage; heat pump with automatic frost/p
pnbsp;nbsp;nbsp; Thermal storage tank: stainless steel water tank structure, the middle made using polyurethane/p
pnbsp;nbsp;nbsp; Bubble technology, both to ensure a solid tank, but also make optimal insulation effect. The insulation technology is the world s most advanced insulation technology, hot water storage tank water temperature 24 hours no more than 5 ℃./p
pnbsp;nbsp;nbsp; Pipes and accessories: PP-R pipe and pipe fittings, fittings, gate valves, check valves and other accessories used in all domestic Famous, a certification authority of the State Machine Gateway machine products inspection report./p
pnbsp;nbsp;nbsp; Insulation materials: pipe insulation materials we use rubber, rubber insulation is one of the world s best insulation materials, insulation can achieve the best results, nice./p
pnbsp;nbsp;nbsp; Automation and control systems: the third generation electronic control system, complete with a strong engineering controls to control circulating pump, water, return water, water supply, electric heating, defrosting …. Proton production of all projects together only one electronic control unit board, no external electronic control system, will be able to implement all-weather water, regular water supply, drainage three kinds of water supply programs directly; regular water supply program can be set to three time periods of water supply; time to open , off three time periods can be set to open, shut down; return water temperature can be set from the human; defrosting temperature, according to the specific circumstances of different regions (from -3 ℃ to -9 ℃) set free; auxiliary power heating, according to the specific circumstances of different regions (from -5 ℃ to 30 ℃) is free to set, control panel with large-screen color LCD screen./p
pnbsp;1, on / off: host switch function./p
pnbsp;nbsp;nbsp; 2, water temperature settings: Temperature range 28 degrees to 60 degrees./p
pnbsp;nbsp;nbsp; 3, the heat pump manual switch setting:/p
pnbsp;nbsp;nbsp; 4, the menu features options: Clock – Host time – water timer – return water temperature – luminosity – defrost – electric heating./p
pnbsp;nbsp;nbsp; 5, to determine the key: to enter the feature set to determine when to enter a function./p
pnbsp;nbsp;nbsp; 6, the time key: choose the host or water three different times within 24 hours of time./p
pnbsp;nbsp;nbsp; 7, the fault detection parameter query: When the host component failure, the display will correspond to a failure code, and also the police./p
pnbsp;nbsp;nbsp; Heating operation flow: run water pump power switch unit test to run the compressor fan is running.br /Device Name: heat pump water heater/p
pnbsp;nbsp;nbsp; Brand: Poly-teng/p
pnbsp;nbsp;nbsp; Origin: Foshan/p
pnbsp;nbsp;nbsp; Specifications Model: DKFXJT10.0-36. 811/p
pnbsp;nbsp;nbsp; Material: Stainless Steel/p
pnbsp;nbsp;nbsp; Dimensions: (length times; Overall width times; total height)/p
pnbsp;nbsp;nbsp; Weight: 230KG/p
pnbsp;nbsp;nbsp; Color:/p
pnbsp;nbsp;nbsp; Dimension 1400 times; 760 times; 950/p
pnbsp;nbsp;nbsp; Proton pump water heating equipment together economic analysis of return on investment/p
pnbsp;nbsp;nbsp; 1, together with Proton pump water heater safety performance comparison of different/p
pWater heating units together Teng air water heater electric water heater fuel gas water heatersbr /Gas diesel electric power energy usebr /Impact of the environment without any pollution without any pollution combustion exhaust pollution combustion exhaust pollutionbr /Safety performance of safe and reliable electric tube easy to aging, there is a leak leakage risks, fire, explosion and other risks are oil spills, fires, explosions and other hazardsbr /Unit 14 to 16 years life 6-8 years 6-8 years 6-8 years/p
pbr /nbsp;nbsp;nbsp; A different type of water heater products required 70 tons per day 55 ℃ hot water run average cost of the table (at temperature 40 ℃)/p
pTypes of energy equipment, heat demand of heat energy per unit energy unit energy cost of daily energybr /Diesel boiler water heater thermal efficiency 75% 2800,000 kcal divide; 6,612 kcal / kg = 423 kg times; 6.5 yuan / kg = 2752 yuanbr /Liquefied gas water heater thermal efficiency of 75% 2800,000 kcal divide; 7,072 kcal / kg = 396 kg times; 6.2 yuan / kg = 2455 yuanbr /Electric water heater thermal efficiency 90% 2800,000 BTU divide; 774 kcal / kWh = 3617 deg; times; 0.9 yuan / kWh = 3255 yuanbr /Poly Teng air heater thermal efficiency of 400% average annual 2800,000 kcal divide; 3,440 kcal / kWh times; 0.9 = 813 degrees yuan / kWh = 732 yuan/p
pnbsp;nbsp;nbsp; Operating costs on a variety of water heater:/p
pnbsp;nbsp;nbsp; ◆ poly Proton pump water heater on operating costs: 732 yuan / day times; 30 days = 21,960 yuan / month;/p
pnbsp;nbsp;nbsp; ◆ diesel heater on the boiler running costs: 2752 yuan / day times; 30 days = 82,560 yuan / month;/p
pnbsp;nbsp;nbsp; ◆ the use of liquefied gas water heater on operating costs: 2455 yuan / day times; 30 days = 73,650 yuan / month;/p
pnbsp;nbsp;nbsp; ◆ On the use of electric water heater running costs: 3255 yuan / day times; 30 days = 97,650 yuan / month./p
pAnnual operating costs of water heaters:/p
pnbsp;nbsp;nbsp; ◆ poly Proton pump water heater annual operating cost: 21,960 yuan / month times; 12 months = 263,520 yuan / year;/p
pnbsp;nbsp;nbsp; ◆ diesel boiler water heater annual operating cost: 82,560 yuan / month times; 12 months = 990,720 yuan / year;/p
pnbsp;nbsp;nbsp; ◆ the use of liquefied gas water heater annual operating cost: 73,650 yuan / month times; 12 months = 883,800 yuan / year;/p
pnbsp;nbsp;nbsp; ◆ the use of electric water heater annual operating cost: 97,650 yuan / month times; 12 months = 1.1718 million yuan / year./p
pnbsp;nbsp;nbsp; Than the energy efficiency of water heaters:/p
pnbsp;nbsp;nbsp; 1) than the diesel boiler water heaters save :990720 -263,520 = 727,200 yuan / year;/p
pnbsp;nbsp;nbsp; 2) than liquefied gas water heater to save :883800 -263,520 = 620,280 yuan / year/p
pnbsp;nbsp;nbsp; 3) than the electric water heater plus save :1171800 -263 520 = 908,280 yuan / year/p
pnbsp;nbsp;nbsp; After-sales service commitment/p
pnbsp;nbsp;nbsp; Your side to get the same quality model project can enjoy in the course of comprehensive and efficient service, is our determination and sincerity. To this end, make the following service plans and commitments./p
pnbsp;nbsp;nbsp; 1, random information:/p
pnbsp;nbsp;nbsp; ① quot;installation instructionsquot;;/p
pnbsp;nbsp;nbsp; ② quot;warranty cardquot;/p
pnbsp;nbsp;nbsp; ③ quot;certificationquot;/p
pnbsp;nbsp;nbsp; 2, provide the appropriate technical training, training of technical personnel on-site free of charge:/p
pnbsp;nbsp;nbsp; a. Use Notice./p
pnbsp;nbsp;nbsp; b. Proton can gather and use common sense principle of hot water unit/p
pnbsp;nbsp;nbsp; c. Proton to gather electronic control unit principle of hot water/p
pnbsp;nbsp;nbsp; d. gather Teng air to water unit installation and maintenance/p
pnbsp;nbsp;nbsp; e. poly Teng air to water unit fault detection and troubleshooting/p
pnbsp;nbsp;nbsp; f. routine maintenance methods and requirements./p
pnbsp;nbsp;nbsp; 3, the warranty:/p
pnbsp;nbsp;nbsp; a. Provide eighteen months the whole warranty period, the core part of the compressor unit 24 months warranty/p
pnbsp;nbsp;nbsp; b. the warranty period due to improper use or failure outside the warranty period, provide free services, and only pay for the cost of replacement parts, for life quality after-sales service.br //p

发表在 More | 标签为 Sanitary pipe fittings, stainless steel eblow, stainless steel reduce | 评论关闭

New alternative PPR, PVC pipe fittings copper insert a new insert

发表于 2012/01/20 由 admin

发表在 More | 标签为 Sanitary pipe fittings, stainless steel eblow, stainless steel reduce | 评论关闭

In 2007 China s steel mills to promote the accelerated development of the downstream development of new products

发表于 2012/01/20 由 admin

a href=http://www.steel-pipe-fittings.net/stainless-steel-tee/ target=_newimg src=http://www.steel-pipe-fittings.net/upfiles/-equal-teeequal-tee-main.jpg border=0 title=stainless steel tee //abrdiv style=BACKGROUND: #fbf0fa;span style=FLOAT: right;font-size:10px;Web Design And Seo For www.china-webdesign.com/spandiv style=FONT-SIZE: 16px;a href=http://www.steel-pipe-fittings.net/stainless-steel-tee/ target=_blankstainless steel tee/a – China Manufacturer/divdiv style=line-hight: 8px; FONT-SIZE: 12px;Thank you for inquiry my stainless steel tee, Tel:+86-577-85989898, Email:JD@CNJIEDE.CN/divdiv style=COLOR: #0e774a; FONT-SIZE: 12px;http://www.steel-pipe-fittings.net/stainless-steel-tee//div/divbrbrpUser innovation focus:/p
pnbsp;nbsp;nbsp; 300 kilometers per hour high-speed passenger line EMU/p
pnbsp;nbsp;nbsp; Since starting at 0:00 on April 18, the sixth of China\\ s railways officially implemented large-scale speed, the opening line of 200 kilometers per hour EMU composition of the biggest highlights. The sixth largest in the implementation speed of preparation, the railway sector by actively promote original innovation, integrated innovation and the introduction of digestion and absorption, and vigorously promote independent innovation strategy, in eight areas of technological innovations made 26, mastered both Wired speed above 200 kilometers per hour and the transformation of the set of technologies. Such as the use of AC-DC power transmission technology, computer controlled braking technology, the lightweight aluminum body and stainless steel technology, technology, represents the world-class high-speed EMU level./p
pnbsp;nbsp;nbsp; In mid-November, three speed of 300 km CRH3 EMU aluminum body in the CNR Tangshan Locomotive amp; Rolling Stock Works successfully off the assembly line, the first next year, the Beijing-Tianjin inter-city rail operations into its localization rate of 80% . December 16, China\\ s first passenger line of 300 km per hour – the Beijing-Tianjin Intercity Railway laid the last one rail, across the board through the smooth, high-speed railway construction in China marks a major breakthrough in technology. Beijing-Tianjin inter-city rail for the first time large-scale use of non-Track technology, for the first time a 500-meter-long welded rail site construction technology, research and development in the construction of the new technology up to 18 items. China\\ s railway passenger line to fill the gaps of construction technology. Innovation to achieve these results, marking the beginning of China\\ s railway technology into the world advanced level./p
pnbsp;nbsp;nbsp; Steel R amp; D results:/p
pnbsp;nbsp;nbsp; One hundred meters high speed rail line heat treatment of steel EMU/p
pnbsp;nbsp;nbsp; Innovation in the railway industry, driven by China\\ s steel production level of the railway into the world\\ s most advanced, such as the transformation of the sixth speed-lines used in all home-made 60 kg / m heavy rail, the Beijing-Tianjin inter-city rail in all domestic one hundred m rail, high-speed steel made of EMU has made important progress, 100 m rail-line heat treatment can be produced./p
pnbsp;nbsp;nbsp; Review of main results:/p
pnbsp;nbsp;nbsp; March 17, has independent intellectual property rights, technical level of China\\ s first world-class online Length of heat meters long rail production line put into operation in the Panzhihua Iron and Steel. In April, the Panzhihua Iron and Steel sole bid of Beijing-Tianjin Intercity rail demand all 27,500 tons, can carry the train of one hundred meters speed of 350 km of rail. As of the end of November, Panzhihua Iron and Steel production and sales this year, one hundred meters of rail exceed 800 million tons. This year, the Panzhihua vanadium-nitrogen alloy using unique patented technology and proprietary process technology to produce a new generation of railway vehicles with high-strength hot-rolled plate Q450NQR1 weather also successfully converting./p
pnbsp;nbsp;nbsp; April 3, Anshan Iron and one hundred meters of heavy rail projects across the board production line of heat load test successfully designed annual capacity of 600,000 tons. July 6, Anshan Iron and Steel production Passenger U71Mn (k), U75V one hundred meters of rail passed the Ministry of Railways said on the organization\\ s technical review meeting. In this way, Anshan Iron and become the Panzhihua Iron and Steel, Baotou Steel, the third with one hundred meters of domestic production capacity of heavy rail manufacturers./p
pnbsp;nbsp;nbsp; April 9, CSR Zhuzhou Rolling Stock Works announced the news: from Maanshan Iron amp; Steel Wheel Company l6 parts of their trial on the international level the wheels up to 40 tons axle load has passed the technical inspection, custom fitted Australian FMG\\ s the plant to 160 tons of ore gondola. In mid-November, Maanshan Iron and Steel and the Ministry of Railways signed within 45 days supply, 35000 HDSA round of contract vehicles, accounting for the Ministry of Railways share of the bidding for 64% of the total./p
pnbsp;nbsp;nbsp; In the sixth railway speed, the speed of 200 km, \quot;Harmony\quot; EMU, its body made of stainless steel is also successful, the latest production of stainless steel body EMU production of rail vehicles using dedicated TISCO stainless steel EN1. 4318,1.4301 construction./p
pnbsp;nbsp;nbsp; Off the assembly line in mid-November, the three speed of 300 km CRH3 EMU aluminum alloy body, an important part – train bogie supporting beams used in all the days of the production of shaped steel tube./p
p2,7 month, twice a day control car north Tangshan Rolling Stock Plant Group CRH3 EMU supply pipe with the opposite sex.br /nbsp;nbsp;nbsp; Car:/p
pnbsp;nbsp;nbsp; User innovation focus:/p
pnbsp;nbsp;nbsp; Own-brand cars made of high-end cars/p
pnbsp;nbsp;nbsp; Head the morning of July 15, completely independently developed by the FAW, marking the Chinese commercial vehicle manufacturing technology to achieve world-class level of the sixth generation of heavy-duty trucks liberation – the liberation of J6, a new base off the assembly line at FAW; August 22, Chery A3 Chery 100 million cars off the assembly line, this is the first breakthrough in the history of China\\ s auto industry one million own-brand vehicles; September 26, Brilliance cars in Beijing to have \quot;Chinese Porsche\quot; reputation of the Chinese held Coupe market news conference, began to enter the high-end car market … in the domestic truck market in the sale of the brand, about 90 per cent own-brand products; in the passenger car market, the brands also accounted for more than 70% of the sale of the brand./p
pnbsp;nbsp;nbsp; The rapid rise of own-brand cars in the same time, the international luxury car brand made further speed the process. October 30, the new Mazda2\\ s first production car made in Changan Ford Mazda Nanjing plant assembly line; November 8, Mercedes – Benz new C-Class sedan starting in the Chinese market, domestic Mercedes – Mercedes-Benz C-Class is also expected to put into operation at the end of the year … …/p
pnbsp;nbsp;nbsp; Steel R amp; D results:/p
pnbsp;nbsp;nbsp; High-grade automotive steel sheets with high-strength steel automotive structures/p
pnbsp;nbsp;nbsp; R amp; D in own-brand cars, luxury cars, driven by domestic, China\\ s automotive steel supply situation is quietly changing, Shougang, Tangshan Iron and Steel, Maanshan Iron amp; Steel, Benxi Iron and Steel, Valin Lianyuan Steel, Baosteel Meishan Steel, a steel security batch of new production companies began to join the competition in the automotive steel sheets to such as Shougang successfully developed ultra-low carbon IF steel; An automobile beam steel rolling with the success of 510L hot rolled coil steel automobile frames to achieve the safety board breakthrough. In the high-grade automotive steel research and development, ZStE260P cold-rolled high-strength steel and 1200 MPa ultra high strength structural steel and some high-end steel products began to supply automotive customers, such as 100% steel body made Cadillac saiwei localized./p
pnbsp;nbsp;nbsp; Review of main results:/p
pnbsp;nbsp;nbsp; Beginning with a 1500 tons of stainless steel 409L in Beijing to finalize the order, Baosteel became Germany\\ s Volkswagen automobile exhaust pipe the world\\ s largest suppliers of stainless steel. In August, the Shanghai Volkswagen news came: the use of Baosteel cold rolled high strength steel developed ZStE260P. By laser welding and metal forming, the product of the physical performance, indicators fully meet the requirements. This year, Baosteel development board strength and speed of cars to cut nearly a year back Cadillac domestic market, domestic steel body with 100% Cadillac saiwei Baosteel materials. In addition to Cadillac, the Baosteel this year, still Chrysler, Audi, Volvo and other high-end brand of domestic vehicles certified in progress. In October, the representative of the world highest level of 1200 MPa hot rolled high strength structural steel rolled in the success of Baosteel Branch, Baoshan Iron and Steel became the world\\ s few companies with the products of technology./p
pnbsp;nbsp;nbsp; Year, Anshan Iron and Dongfeng Peugeot Citroen Automobile Company to establish long-term strategic cooperative relations, and reached the first five-year cooperation agreement, the new Dongfeng Citroen, Peugeot series car \quot;put\quot; Angang Steel \quot;coat.\quot; August 30, Changchun FAW steel distribution companies in the saddle well opened FAW Group, Anshan Iron and steel plate to provide accounts of automotive steel FAW total procurement volume of more than 50%, becoming its largest supplier of automotive steel sheets./p
pnbsp;nbsp;nbsp; Early Tangganggufen successfully developed for the manufacture of truck trailers hanging beam Q420B automotive high-strength structural steel, structural steel strength it can upgrade the car to reduce vehicle weight, average savings of more than 20% of steel consumption./p
pnbsp;nbsp;nbsp; In March, Benxi Iron and Steel brand car panel has volume for five consecutive months into the \quot;China\quot; series sedan and the \quot;Sea Lion\quot;, \quot;Grace\quot; series commercial vehicle assembly line./p
pIn October, Maanshan Iron and Steel New production of DC04 (IF steel) Automotive board, whether JAC use it inside door panel stamping, or stamping of Chery with its \quot;lucky tiger\quot; vehicle cab front bezel, the pass rates up to 100%./p
pnbsp;nbsp;nbsp; In October, Jinan Iron and Steel cold rolling mill test the thickness of 0.28 mm thin steel plate to succeed, to achieve a major breakthrough in product development./p
pnbsp;nbsp;nbsp; Power:/p
pnbsp;nbsp;nbsp; User innovation focus:/p
pnbsp;nbsp;nbsp; One million kilowatts of large generating units UHV transmission project/p
pnbsp;nbsp;nbsp; For energy conservation, electric power industry to accelerate the pace of innovation. July 5, the degree of China\\ s first domestically-million-kilowatt generator set up in Shandong Zou County official operations; July 10, China\\ s first proprietary hydro-generating unit of 700,000 kilowatts – the Three Gorges Hydropower Station No. 26 formal grid unit; May 21, Sichuan – Shanghai plusmn; 800 kV HVDC transmission demonstration project in Shanghai, the foundation, which is currently planning the construction of the world\\ s highest voltage, transmission distances, the largest capacity HVDC works … …/p
pnbsp;nbsp;nbsp; Focus on power engineering construction speed, but also to the power equipment manufacturing innovation wings. August 5, the largest one million kilowatts ultra supercritical turbine generator manufacturers in the success of Harbin Electrical Machinery Plant Co., Ltd., the localization rate of 80%; October 8, China\\ s first 1000 kV southeastern Shanxi – Nanyang – Jingmen UHV transformer in Tianwei change to start production./p
pnbsp;nbsp;nbsp; Steel R amp; D results:/p
pnbsp;nbsp;nbsp; High-grade non-oriented silicon steel Q460TB strength angle/p
pnbsp;nbsp;nbsp; Of large generators, high voltage transmission projects as the basis, this year, China\\ s R amp; D and production of electrical steel is also fruitful, such as B50A350, B35A300, 50TW250 high-grade non-oriented silicon steel have been developed, Baosteel Wuhan Iron and after following the second home can become production-oriented silicon steel manufacturers. In the transmission tower of steel, the highest level this year to upgrade to high-strength angle iron Q460 level./p
pnbsp;nbsp;nbsp; Review of main results:/p
pnbsp;nbsp;nbsp; March 8, Angang Heavy Machinery Company by the independent research and development of the Three Gorges right bank of the wheel unit formally adopted by the lower ring of Science and Technology Department of Liaoning Province identification. This means that China has mastered the production of the Three Gorges project and other projects with a large cast turbine rotor manufacturing technology needed to break our dependence on imports of such castings long-term situation./p
pnbsp;nbsp;nbsp; May 17, Ling Ao Nuclear Power Station Phase II conventional island-made high-pressure, chrome alloy a href=http://www.steel-pipe-fittings.net/pipe fittings/a and control supply agreement signed in Beijing, the conventional island of pipe fittings will be localized, which climbed into steel to provide the required 60% of steel, which is the million-kilowatt nuclear power plant pipe fittings for the first time the entire set of localization./p
pnbsp;nbsp;nbsp; May 18, Tangganggufen the use of new technology, the first smelting of 170 tons WD2 clean high-quality low carbon electrical steel. In August, the production of Q460TB Tangganggufen angle true-type high-strength tower and smoothly through the \quot;leave it\quot; test. The angle is a high-strength test Q460TB Pingyao – Luoyang South 500 kV double-circuit EHV transmission project special steel, steel transmission tower will reduce the amount of 33%. This line is also the first domestic use of Q460 level angle of transmission lines./p
pnbsp;nbsp;nbsp; In the first half, Baosteel has successfully trial B50A350, B35A300 two high-grade non-oriented silicon steel, Baosteel thus self-developed high-grade non-oriented silicon steel has reached four. After 10 years, the five large-scale production of validation, independent development of Baosteel oriented silicon steel manufacturing process line to mature this year, can produce high quality grain oriented silicon steel./p
pnbsp;nbsp;nbsp; This year, high-grade cold-rolled silicon steel of TISCO has also made a historic breakthrough in the research and development, and signed with the user high-grade cold-rolled silicon steel 50TW250 supply contract, the product key for a domestic water improvement projects./p
pDecember 3, Wuhan Wuhan received Ministry of Science and rely on the silicon unit to form a national Engineering Research Center of official approval document. In recent years, Wuhan Iron and break down foreign technology constraints, the first independently designed and built a non-oriented silicon steel production line domestically, but also the first self-developed low-temperature-oriented silicon steel production technology./p
pnbsp;nbsp;nbsp; Shipping:/p
pnbsp;nbsp;nbsp; User innovation focus:/p
pnbsp;nbsp;nbsp; Large ships and other professional ship LNG ship/p
pnbsp;nbsp;nbsp; November 21, China\\ s construction of the first LNG ship fleet left the Hudong Shipbuilding Dock trials. This year, China\\ s shipbuilding industry, like self-innovations dizzying. January 26, the world\\ s first floating drilling production storage vessel (FDPSO) ship MPF-1000 in Dalian COSCO started, only steel consumption reached more than 33,000 tons; April 30, the construction of Shanghai Waigaoqiao Shipbuilding 300,000 tons of floating production storage vessel (FPSO) delivery, which is China\\ s first fully independent design and construction of a 30-ton FPSO; 9 9, China\\ s first ship designed and built the largest container carrier most technologically advanced container ships – 8530TEU large container ships to deliver the owner, becoming the Republic of Korea, Japan and Denmark after the fourth can be designed, constructed super-large container ships of countries …/p
pnbsp;nbsp;nbsp; In recent years, China\\ s shipbuilding industry through innovation, promote the optimization and upgrading of product structure, ship orders by the beginning of this century structure to small and medium sized bulk carriers mainly into bulk carriers, oil tankers, container ships ship par three./p
pnbsp;nbsp;nbsp; Steel R amp; D results:/p
pnbsp;nbsp;nbsp; High-strength high-strength heavy plate steel offshore structures/p
pnbsp;nbsp;nbsp; Increasingly large in the new ship, and professional development, research and development of China\\ s wide-thick ship plate also made significant progress. It is worth mentioning that this plant can be described as emerging Ship rise year-round. Shougang, Jinan Iron and Steel, the new steel, South (Beijing) Steel, Xiang Steel, Shaoguan Steel and a number of new production plants Ship Ship has been an important business strategy as species, not only the forefront of China\\ s ship plate production and sales volume among the such as Shougang, Jinan Iron and Steel, a new steel ship plate production and sales this year have exceeded one million tons mark, and has become an important force in ship plate production, but also towards the high-end ship plate varieties, such as Xiangtan Steel has been able to produce F40 high strength ship plate and top performance of Z-Ship./p
pnbsp;nbsp;nbsp; Review of main results:/p
pnbsp;nbsp;nbsp; February 7, three successful trial production of steel billet continuous casting, Japan, February 12 board obtained a successful trial production, the three structural steel products mainly from a construction material to the plate to the development of production, the end of the century shipbuilding in Fujian history, but history can not be self shipbuilding plate./p
pnbsp;nbsp;nbsp; In March. The first 95 tons Baosteel TMCP plate by the first commercial CCS certification concurrent to domestic shipyards. To the second quarter, Baosteel has developed TMCP has won nine world Ship Classification Society certification authority, which marks the Baosteel successfully mastered the manufacturing level of the top plate on behalf of TMCP process, become the world\\ s leading plate manufacturers. At present, Baosteel achieved in the Waigaoqiao Shipbuilding SHIP TMCP, Hudong-Zhonghua Shipbuilding and other domestic shipyards volume applications./p
pnbsp;nbsp;nbsp; In the first quarter, sand steel mill test generous 4.8 meter wide roll out the finished plate and sheet thickness of 16 mm, the width of the finished product, the thickness of the debugging features such as a major breakthrough./p
pnbsp;nbsp;nbsp; May 20, Handan Iron and Steel Group Corporation 1 million tons Wugang heavy plate production line, the production line can produce 40 kg class DH40, EH40, and 55 kg of DH55, EH55 Ship, and all F-class high-strength ship plate./p
pnbsp;nbsp;nbsp; Following the developed WNQ690 high strength steel marine structures, the Wuhan Iron and Steel has developed a proprietary WNQ570 (WPT450) high-strength structural steel marine engineering, received July 8, the State Intellectual Property Patent Office issued a patent certificate./p
pOil:/p
pnbsp;nbsp;nbsp; User innovation focus:/p
pnbsp;nbsp;nbsp; Second West-East national oil reserve project/p
pnbsp;nbsp;nbsp; July 12 to 15, the oil was held in Beijing Second West-East Pipeline Project research phase results will be assessed, using 12 MPa gas pressure, 1219 mm diameter, X80 grade steel technology program has been respected. Planned second West-East North-West Frontier west Xinjiang, Guangzhou, south, east to Shanghai, power on the route length of more than 7000 km branch drug present, the second West-East oil is stepping up efforts to carry out preparatory work for the project is expected to officially start early next year./p
pnbsp;nbsp;nbsp; December 19, China\\ s first strategic oil reserve bases – Zhenhai base passed the national acceptance, a project of the other three bases will be today, another next year for completion. This year, the second batch of oil reserve base in the site work has started, Shanshan, Xinjiang, Gansu, Lanzhou, Caofeidian, Guangzhou, Nansha and Shenzhen and other places are expected to list in two reserve bases in place. It is reported that China\\ s national strategic oil reserve bases in total planned three, and its reserves are roughly arranged: the first phase of 10 million to 12 million tons, the second 28 million tons, the third phase 28 million tons./p
pnbsp;nbsp;nbsp; Steel R amp; D results:/p
pnbsp;nbsp;nbsp; X80 grade pipeline steel, etc./p
pnbsp;nbsp;nbsp; 9Ni other high-end steel plates for pressure vessels/p
pnbsp;nbsp;nbsp; West-East Gas Pipeline Project by relying on our high-grade pipeline steel X80 and other developed areas of important progress. Following Baosteel, Anshan Steel, Wuhan Iron and Steel, Wuyang, this year TISCO, Sha Steel, Shougang Group, Maanshan Iron and Steel, Jinan Iron and Steel, South (Beijing) steel, An steel production of X80 pipeline steel and so on into the Chen camp, and into the West-East Gas Pipeline Project. Steel in the national oil reserve base, the Dragons become the Wuhan Iron and Steel, Wuyang, Baosteel, Anshan Iron and Steel, Jinan Iron and Steel after the sixth steel tank can supply large steel mills, and Baosteel, Anshan Iron and Steel, Jinan Iron and Steel tank with a large steel in engineering applications smoothly. This year, Baosteel has developed the world\\ s highest level of X120 pipeline steel and the highest-grade high-chromium steel casing – CO2 corrosion-resistant high-chromium steel casing B13Cr110; Taiyuan, Anshan Iron and Steel developed a cryogenic pressure vessel 9Ni plate, breaking the LNG ( LNG) storage tanks rely on steel imports./p
pnbsp;nbsp;nbsp; Review of main results:/p
pnbsp;nbsp;nbsp; Early research by the low-temperature TISCO 9Ni pressure vessel steel plate passed the National Standardization Technical Committee of Boiler and Pressure Vessel identification expert review. The development of materials to fill the gap, breaking the LNG (liquefied natural gas) storage tanks rely on steel imports. In October, TISCO developed the first 1000 tons of X80 pipeline steel coil on schedule sent to the user./p
pnbsp;nbsp;nbsp; In early June, Wugang Sichuan Puguang gas field development and production of 4776 tons SA516Gr70N plate full delivery, replace the imported products, effectively promoted the process of petrochemical equipment made of steel./p
pnbsp;nbsp;nbsp; In June, the Anshan Iron and Steel for the production of petrochemical depot Caofeidian large tank with high-strength steel supply contract was formally completed, successfully broke into the big tank steel market. At the same time, Anshan Iron and also winning the Zhenhai Arashiyama four large steel tank with a contract./p
pnbsp;nbsp;nbsp; December 9, Anshan Iron and developed low-temperature pressure vessel steel plate with 9Ni, passed the State Standard Committee of expert assessment of capacity, and quality of imported products very kind./p
pnbsp;nbsp;nbsp; July 6, Baosteel announced that for the first time the use of X120 pipeline steel Baosteel has successfully passed the trial of the Longitudinal Research in the detection of oil pipes, their toughness, tear drop hammer performance is better than the level of international like-kind steel . This year, the highest-grade high-chromium steel casing – developed by Baosteel B13Cr110 CO2 corrosion-resistant high-chromium steel casing, Sinopec also successfully applied to the Northeast District in more than 38 m deep wells./p
pnbsp;July 28, South (Beijing) steel research and development production 12MnNiVR (enterprise grade of N610E) large-scale high-strength steel tubing, through the National Standard Committee of the welding performance capacity of technology review, the Dragons became the sixth country accredited large steel tank manufacturer. This year, the Dragons also for the West-East Gas Pipeline Project provides the first 1000 tons of X80 pipeline steel coil./p
pnbsp;nbsp;nbsp; In August, Jinan Iron and Steel license plate with a large supply tank of Zhoushan petro reserve base project, which is the economic strength of steel to complete the first large-scale supply contracts with steel tanks, marking the Jinan Iron and Steel has successfully established itself as a large steel tank market. This year, the Jinan Iron and Steel has successfully rolled out high-level X80 pipeline steel./p
pnbsp;nbsp;nbsp; In September, climbed into steel production technology with high-quality steel pipe break SGX: hydrogen sulfide corrosion resistant high strength casing was successfully developed, technical performance has reached international advanced level of similar products./p
pnbsp;nbsp;nbsp; Autumn in October, the Q125 high grade light Valin Hengyang Steel Tube rolling in the success, value steel has become one of the few, one of the product technology./p
pnbsp;/p

发表在 More | 标签为 Sanitary pipe fittings, stainless steel eblow, stainless steel tee | 评论关闭

Victaulic AGS large diameter pipeline to connect the program landed in China

发表于 2012/01/20 由 admin

发表在 More | 标签为 pipe fitting suppliers, Sanitary pipe fittings, stainless steel eblow | 评论关闭

Zhaoqing City, Guangyuan Stainless Steel Products Co., Ltd. Main Products

发表于 2012/01/15 由 admin

a href=http://www.steel-pipe-fittings.net/ target=_newimg src=http://www.steel-pipe-fittings.net/upfiles/-equal-teeequal-tee-main.jpg border=0 title=steel pipe fittings //abrdiv style=BACKGROUND: #fbf0fa;span style=FLOAT: right;font-size:10px;Web Design And Seo For www.china-webdesign.com/spandiv style=FONT-SIZE: 16px;a href=http://www.steel-pipe-fittings.net/ target=_blanksteel pipe fittings/a – China Manufacturer/divdiv style=line-hight: 8px; FONT-SIZE: 12px;Thank you for inquiry my steel pipe fittings, Tel:+86-577-85989898, Email:JD@CNJIEDE.CN/divdiv style=COLOR: #0e774a; FONT-SIZE: 12px;http://www.steel-pipe-fittings.net//div/divbrbrpOur main products include UV shell, stainless steel manifold, polished stainless steel inside and outside the pipe, ball valve, butterfly valves, diaphragm valves, stainless steel filter container, three, four, bend, clamp assembly, round thread group fittings, flanges, pharmaceutical companies dedicated stainless steel cart, shoe racks, wardrobes, stainless steel barrels and other products. Widely used in pharmaceutical, food, beer, beverage, electronics factory, dairy products, spices, monosodium glutamate, cosmetics, toothpaste, etc. production. Fluid systems sterile environment to meet the higher requirements of the health needs of many industries./p
pnbsp;nbsp;nbsp; General Manager Mr. Liu Songlin is China s thin-walled stainless steel sanitary pipe fittings, valves of one of the founders of China s health pipe fittings, valves made a significant contribution to the promotion and application. And participated in the formulation QB/T2003-94, QB/T2004-94 standards./p
pnbsp;nbsp;nbsp; The company has so far undertaken a number of GMP plant process piping engineering and related engineering services for stainless steel products, by customers.br //p

发表在 More | 标签为 pipe fitting suppliers, Sanitary pipe fittings, stainless steel eblow, steel pipe fittings | 评论关闭

Introduction to interpretation of stainless steel

发表于 2011/11/26 由 admin

Stainless acid-resisting steel or stainless steel, which is made of stainless steel and steel acid-resistant of two major components, simple words, resistant to atmospheric corrosion of steel called stainless steel, and resistance to chemical corrosion resistance of the steel is acid resistant steel. Generally speaking, the rock volume containing Wcr of more than 12% steel with stainless steel stainless steel according to the characteristics of the microstructure after heat treatment can be divided into five categories: namely, ferritic stainless steel, martensitic stainless steel, austenitic stainless steel, Austenitic – ferritic stainless steel and stainless steel carbide precipitation.Sanitary pipe fittings

Stainless steel equipment in the production process will appear showing damage, defects and some of the effects of the surface material, such as: dust, floating iron or embedded iron, heat returning fire and other oxide layer, grinding burrs, rust, arc welding scar, welding spatter, welding flux, welding defects, oil and grease, adhesives and paint, residual chalk and marker pens and india. The vast majority are because of neglect of their harmful effects and do not take or do not. However, their protection against oxidation film having potential harm. Protective film once damaged, be thinned or using other methods to change, the following will begin to corrosion of stainless steel. Corrosion is not generally throughout the surface, but the defects in or around the. This bureau general corrosion usually pitting or crevice corrosion, the two corrosion will develop in breadth and depth, and most of the surface is not subject to erosion. The following talk about the cause of these problems for a variety of reasons.

Stainless steel ( Stainless Steel ) refers to the resistance of air, steam, water and other corrosive medium and weak acid, alkali, salt and other chemical attack by corrosive medium steel, also known as stainless acid-resisting steel. In practical applications, often weak corrosion resistant steel known as stainless steel, the corrosion of the steel called acid-resisting steel. As a result of the differences in chemical composition, the former does not necessarily medium chemical corrosion resistance, while the latter generally has not rust. Stainless steel corrosion resistance depends on the steel alloying elements contained.

Chromium is the corrosion resistance of stainless steel to obtain the basic elements, when the chromium steel reached about 12%, chromium in corrosive media and the role of oxygen in the steel surface, forming a layer of thin oxide film ( from the passive film ), can prevent the steel matrix to further corrosion. In addition to chromium, alloy elements are nickel, molybdenum, titanium, niobium, copper, nitrogen, to meet a variety of uses and properties of stainless steel requirements.Stainless steel tee

Stainless steel usually in matrix organization is divided into:

1, ferritic stainless steel. From 12% to 30%. Its corrosion resistance, toughness and weldability with chromium increases the amount of resistance to chloride stress corrosion, performance is superior to other types of stainless steel.

2, austenitic stainless steel. Chromium containing greater than 18%, also contains about 8% of nickel and a small amount of molybdenum, titanium, nitrogen and other elements. Good comprehensive performance, is resistant to a variety of medium corrosion.

3, austenitic-ferritic duplex stainless steel. Both austenitic and ferritic stainless steel advantages, and superplasticity.

4, martensitic stainless steel. High strength, but the ductility and weldability poor.Stainless steel elbow

标签为 Sanitary pipe fittings, Stainless steel flange, stainless steel pipe fittings | 留下评论

Investigation on Corrosion of stainless steel butterfly valve

发表于 2011/11/22 由 admin

The material for the CF8M stainless steel butterfly valve in use in the process of corrosion. Austenitic stainless steel after heat treatment by normal tissue, at room temperature for Austenitic, corrosion resistance is very good. In order to analyze the corrosion reason of butterfly valve, the sampling analysis.

1 test methods

Sampling for chemical analysis ( judge whether it meets the standard requirements ), metallographic examination, heat treatment process test and SEM analysis.

2 the test results and analysis

2.1 chemical composition

Results of chemical analysis and standard components.

2.2 metallurgical analysis

From the onset of corrosion phenomenon of butterfly valves take the metallographic sample, by grinding and polishing, using ferric chloride aqueous corrosion, in the Neophot-32 Jin Xiangxian emblem mirror observation analysis, the microstructure of austenitic and by another precipitates. From theoretic tell austenitic stainless steel after heat treatment by the normal, should be homogeneous austenite structure. The appearance of another precipitates what organization, there are two judges: one is the sigma phase, the other is a carbide. Sigma phase and carbide forming conditions are different, but all have a common characteristic, it is Wrought austenitic stainless steels to intergranular corrosion susceptibility.

A variegated method of sigma phase differential. Using alkaline potassium ferricyanide solution ( 10g + 10g + potash potassium hydroxide aqueous 100ml ), sample in the reagent boil 2 ~ 4min, ferrite yellow, carbide is corrosion, steel is light bright, sigma phase from brown to black. Using the method of cut from the butterfly specimen in alkaline aqueous solution of potassium ferricyanide to boil in the 4min, examined under a microscope, maintain the original pattern of precipitation, revealed no significant change. So the decision by using heat treatment to further test analysis.

The 2.3 heat treatment test analysis

The sigma phase is a chromium atoms roughly equal proportions of intermetallic compounds. Chemical composition, ferrite, cold deformation, temperature change in different degrees on the sigma phase have an impact on the formation of. The staining test, under the microscope observation of precipitated phase change is not obvious, so the use of the heat treatment method to identify the sigma phase. The introduction of relevant materials, the sigma phase is usually 500 ~ 800 C formed in the long time aging. This is because of the high temperature aging for diffusion of CR. Then the high temperature heating sigma phase will begin to dissolve, dissolved over at least 920 DEG c.. At higher than sigma phase stable temperature of heating can be eliminated. The time required for the formation of sigma phase although very long, but the elimination of sigma phase generally only a short heating time. According to this theory, the formulation of the heat treatment process, was observed in the tissues of precipitated phase can be eliminated. From the butterfly valve to cut a sample is heated to 940 degrees C, insulation 30min, then the Neophot-32 metallurgical microscope observation and analysis. After heat treatment of the sample in the precipitated phase has not been eliminated, and maintain the original pattern, thus proves that the organization in the precipitated phase may not be the sigma phase.Sanitary pipe fittings

2.4SEM analysis

Sometimes the steel in the sigma phase, using any staining methods are unable to distinguish the popular color, can adopt SEM analysis method to identify. Known as sigma phase of iron and chromium compounds, chromium content of 42% ~ 48%, EDS through qualitative and quantitative analysis to detect unknown phase composition elements and their content, thereby determining the unknown phase.

EDS results showed that precipitates, chromium content of 33.6%, significantly higher than the substrate in the Cr content of 16.3%, and the sigma phase of chromium content is 42% ~ 48%, which denied the precipitated phase for the sigma phase. Dyeing test, heat treatment test result, that stainless steel butterfly valve tissue in the precipitated phase is not Sigma phase. The observation of SEM precipitates as a eutectic structure, is mainly in chromium carbide.Stainless steel flange

Stainless steel butterfly valve material is austenitic stainless steel, the material is generally in the solution state using. In room temperature condition, the organization for Austenitic austenitic stainless steel, in a wide range of corrosive medium, especially the atmosphere with good corrosion resistance. Cause analysis of corrosion of stainless steel butterfly valves are as follows:

The integrated the above test results, can determine the butterfly valve materials precipitated phases in the microstructure is not sigma phase, the butterfly valve corrosion phenomenon is not caused by the sigma phase.

The observed by SEM, confirm the butterfly valve of the precipitated phases in the microstructure is mainly to chromium carbide, the eutectic structure along the grain boundary. EDS analysis results show that the distribution of grain boundary carbides in the chromium content was significantly higher than that of matrix. This is M23C6 type carbides. The carbide precipitation, and not to the diffusion of Cr supplementation, with chromium carbide form along austenite grain boundary precipitation, around carbide forming chromium-depleted zone, which is easy to be corroded in austenitic stainless steel grain boundary. So precipitate along the grain boundary carbides is caused by corrosion is the main cause of butterfly valve.Stainless steel tee

The after solution treatment of austenitic stainless steel at high temperature, because most of carbides in austenite is dissolved, saturated with large amounts of carbon and chromium, and because of the subsequent rapid cooling and fixed, so that the material is of the corrosion resistance of. Therefore, we should strictly control the heat treatment process, solution treatment, heating the workpiece to high return, the carbide dissolves, and then rapidly cooling, obtaining uniform austenite on organization. After solution treatment, if the use of slow cooling, the cooling process of chromium carbide will precipitate along the grain boundary, resulting in material corrosion resistance reducing.

标签为 Sanitary pipe fittings, Stainless steel flange, stainless steel tee | 留下评论

标签归档：Sanitary pipe fittings

North High valve: Advocacy to develop new products to seek win-win

Heat treatmen t technology: dual-phase steel castings heat-treated area

Ho Chak environmental protection: drinking water, a new era of real skill differences refining

Project: Proton pump Poly Xinyu Middle School in the application of Taishan

New alternative PPR, PVC pipe fittings copper insert a new insert

In 2007 China s steel mills to promote the accelerated development of the downstream development of new products

Victaulic AGS large diameter pipeline to connect the program landed in China

Zhaoqing City, Guangyuan Stainless Steel Products Co., Ltd. Main Products

Introduction to interpretation of stainless steel

Investigation on Corrosion of stainless steel butterfly valve

Friend Links

Other Blogs