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Commonly used materials for welded pipes are: Q235A, Q235B, 16Mn, 20#, Q345, L245, L290, X42, X46, X60, X80, 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb, etc. The billet used for welded steel pipe is steel plate or strip steel, which is divided into furnace welded pipe, electric welding (resistance welding) pipe and automatic arc because of different welding processes. welded pipe Welded pipe. Due to the different welding forms, it is divided into two types: straight seam welded pipe and spiral welded pipe. Because of its end shape, it is divided into circular welded pipe and special-shaped (square, flat, etc.) welded pipe. Welded pipes are divided into the following varieties due to their different materials and uses: GB/T3091-2001 (galvanized welded steel pipe for low pressure fluid transportation). Mainly used for conveying general lower pressure fluids such as water, gas, air, oil and heating hot water or steam and other purpose pipes. Its representative material is: Q235A grade steel. GB/T14291-2006 (Welded steel pipe for mining fluid transportation). It is mainly used for straight seam welded steel pipes for mine air pressure, drainage and shaft discharge gas. It represents the material Q235A, B grade steel. GB/T14980-1994 (large diameter electric welded steel pipe for low pressure fluid transportation). Mainly used for conveying low pressure fluids such as water, sewage, gas, air, heating steam and other purposes. It represents the material Q235A grade steel. GB/T12770-2002 (stainless steel welded steel pipe for mechanical structure). Mainly used in machinery, automobiles, bicycles, furniture, hotel and restaurant decoration and other mechanical parts and structural parts. Its representative materials are 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb, etc. GB/T12771-1991 (stainless steel welded steel pipe for fluid transportation). Mainly used for conveying low pressure corrosive medium. The representative materials are 0Cr13, 0Cr19Ni9, 00Cr19Ni11, 00Cr17, 0Cr18Ni11Nb, 0017Cr17Ni14Mo2, etc. We can offer Stainless Steel Pipe products, including Stainless Steel Capillary Pipe, Stainless Steel Precision Pipe, Stainless Steel Seamless Pipe, Stainless Steel Sanitary Pipe, Thick Wall Stainless Steel Pipe, Stainless Steel Bright Tube, Stainless Steel Needle Tube, Stainless Steel Fine Tube, Stainless Steel Coil, Welded Stainless Steel Pipe, Stainless Steel Industrial Pipe, Stainless Steel Round Tube, Medical Stainless Steel Tube, Stainless Steel Thin Wall Tube, Stainless Steel Shaped Tube, Stainless Steel Elbow, Stainless Steel Snake Bone Tube, Stainless Steel Decorative Tube, Stainless Steel Electronic Cigarette Tube, Stainless Steel Tube Processing, Copper Pipe, Titanium Alloy Tube, Aluminum Tube, and so on.

430 has strong corrosion resistance in oxidizing environment, but weak corrosion resistance in non-oxidizing acid and activating solution, and can only be used as a corrosion-resistant material for equipment used in the manufacture of acetic acid. Intergranular corrosion resistance, ferritic steel grades C and N have lower solubility than austenite, and because Cr, C, etc. diffuse quickly in ferrite, carbides are easily formed, so they show intergranular corrosion characteristics and austenite. Stainless steel is different. The sensitization temperature range of 1Cr17 steel is around 400-600 ℃, and sensitization also occurs when exposed to high temperature areas above 1100 ℃. In the stabilization treatment in the temperature range of 700-800 °C, the Cr generated during the formation of carbides is depleted, and the sensitization disappears due to the re-diffusion of Cr. In terms of use, it is mainly used in chemical equipment for the production of nitric acid and ammonium nitrate, such as heat absorption towers, heat exchangers, acid tanks, etc. Sheets are widely used in building interior decoration, daily office equipment, kitchen equipment, electrical products, etc. We can offer Stainless Steel Pipe products, including Stainless Steel Capillary Pipe, Stainless Steel Precision Pipe, Stainless Steel Seamless Pipe, Stainless Steel Sanitary Pipe, Thick Wall Stainless Steel Pipe, Stainless Steel Bright Tube, Stainless Steel Needle Tube, Stainless Steel Fine Tube, Stainless Steel Coil, Welded Stainless Steel Pipe, Stainless Steel Industrial Pipe, Stainless Steel Round Tube, Medical Stainless Steel Tube, Stainless Steel Thin Wall Tube, Stainless Steel Shaped Tube, Stainless Steel Elbow, Stainless Steel Snake Bone Tube, Stainless Steel Decorative Tube, Stainless Steel Electronic Cigarette Tube, Stainless Steel Tube Processing, Copper Pipe, Titanium Alloy Tube, Aluminum Tube, and so on.

Steel is obtained by appropriately mixing carbon elements in iron. In the iron and steel industry, the carbon content of less than 2.11% is called steel, and the carbon content of more than 2.11% is called iron. Stainless steel is also called alloy steel, which is added to ordinary steel. Cobalt, Chromium, nickel, tungsten, titanium and other metals. The "iron-carbon alloy" with a carbon content of less than 2% is called "carbon steel". Carbon steel is divided into low carbon steel, medium carbon steel and high carbon steel according to the carbon content. When other elements are added to the steel, it is called "alloy steel". The purpose of smelting alloy steel is to meet the needs of production and life. Stainless steel is a kind of alloy steel, with more metal alloying elements such as Ci and Ni added, there are many types. Common stainless steels are divided into two types: "ferritic stainless steel" and "austenitic stainless steel". Ferritic stainless steel has a body-centered lattice and is magnetic. For example: 1Ci13, 2Ci13. Often used to make tableware, decorative pieces. Austenitic stainless steel has a face-centered lattice and is non-magnetic. For example: 1Ci18Ne9T, used in chemical, pharmaceutical and food industries. If someone says that the use of magnets to identify whether it is stainless steel, it is not comprehensive. [Reprint must retain the source – Changjiang Nonferrous Net] [Title]What is the difference between steel and iron and stainless steel Link: https://www.ccmn.cn/yszs/159221 The copyright belongs to our company, please indicate the source when reprinting. We can offer Stainless Steel Pipe products, including Stainless Steel Capillary Pipe, Stainless Steel Precision Pipe, Stainless Steel Seamless Pipe, Stainless Steel Sanitary Pipe, Thick Wall Stainless Steel Pipe, Stainless Steel Bright Tube, Stainless Steel Needle Tube, Stainless Steel Fine Tube, Stainless Steel Coil, Welded Stainless Steel Pipe, Stainless Steel Industrial Pipe, Stainless Steel Round Tube, Medical Stainless Steel Tube, Stainless Steel Thin Wall Tube, Stainless Steel Shaped Tube, Stainless Steel Elbow, Stainless Steel Snake Bone Tube, Stainless Steel Decorative Tube, Stainless Steel Electronic Cigarette Tube, Stainless Steel Tube Processing, Copper Pipe, Titanium Alloy Tube, Aluminum Tube, and so on.

Generally speaking, metals that are easy to ionize are easy to be oxidized, that is, easy to corrode, but in fact this is not completely the case. Although some metals such as aluminum, magnesium, and chromium are easy to ionize, they are easy to be ionized in the atmosphere or water. A film of corrosion products is formed, thereby improving corrosion resistance. The surface state of aluminum and aluminum alloys is changed by chemical or electrochemical methods, so that the dissolution rate is sharply reduced, and the corrosion resistance is improved. This process is called aluminum passivation treatment. Passivation is often accompanied by a sudden increase in anodic potential, which makes it difficult for anodic reactions to proceed and slows or stops metal corrosion. Passivation actually turns the active metal surface into an inert surface through the chemical reaction of the passivation solution, thereby preventing external destructive substances from reacting with the metal surface, thereby achieving the purpose of prolonging the rusting time. Because passivation can significantly improve the corrosion resistance of metal, it is widely used in machinery, electronics, instruments, daily necessities, military equipment and other fields. In recent years, with the continuous development of productivity. Stainless steel materials have been rapidly and widely used in various industrial fields. According to relevant statistics, my country's demand for stainless steel materials increased from 260,000 tons in 1990 to about 5.6 million tons in 2006. A year-on-year increase of about 22 times. This trend is developing and has been continuously rising. The market for the application of stainless steel materials can be imagined, large and small metal products companies can be said to be all over the world. However, the expensive price of stainless steel also limits its application. Especially in recent years, the rising price of raw materials has seriously affected the production cost of stainless steel products and has become a bottleneck restricting the development of production. Under the pressure of competition and the need for cost reduction, various enterprises have now invested in the research and development and production of 400 series and 200 series products; 400 series and 200 series are low-chromium and low-nickel stainless steels. The knowledge cost of 304 stainless steel square tube is relatively low and only less than 1/2 of that of 300 series stainless steel. Therefore, it is deeply loved by the majority of users, and the market demand for such materials is also increasing. From this analysis, it will become an inevitable trend in the application of stainless steel materials in the future. However, although these materials have mechanical properties equivalent to 300 series stainless steels, they are ultimately less resistant to corrosion due to too low chromium and nickel content. Therefore, how to improve the corrosion resistance of such materials is the key to the effective application of materials. We can offer Stainless Steel Pipe products, including Stainless Steel Capillary Pipe, Stainless Steel Precision Pipe, Stainless Steel Seamless Pipe, Stainless Steel Sanitary Pipe, Thick Wall Stainless Steel Pipe, Stainless Steel Bright Tube, Stainless Steel Needle Tube, Stainless Steel Fine Tube, Stainless Steel Coil, Welded Stainless Steel Pipe, Stainless Steel Industrial Pipe, Stainless Steel Round Tube, Medical Stainless Steel Tube, Stainless Steel Thin Wall Tube, Stainless Steel Shaped Tube, Stainless Steel Elbow, Stainless Steel Snake Bone Tube, Stainless Steel Decorative Tube, Stainless Steel Electronic Cigarette Tube, Stainless Steel Tube Processing, Copper Pipe, Titanium Alloy Tube, Aluminum Tube, and so on.

304 stainless steel welded pipe has a simple production process, high production efficiency, many varieties and specifications, and less equipment capital, but the general compressive strength is lower than that of stainless steel seamless steel pipe. In recent years, with the rapid development of continuous rolling production of high-quality stainless steel strip and the advancement of stainless steel welding and inspection technology, the quality of welds has been continuously improved, the varieties and specifications of welded stainless steel pipes have been increasing, and in more and more fields, especially It replaces stainless steel seamless steel pipes in heat exchange pipes, decorative pipes, medium and low pressure fluid pipes, etc. Features: 1. Small-diameter 304 stainless steel welded pipes are continuously produced online. The thicker the wall thickness, the greater the investment in the unit and welding equipment, and the less economical and practical it is. The thinner the wall thickness, the lower its input-output ratio; 2. The process of this product determines its advantages and disadvantages. Generally, 304 stainless steel welded pipe has high precision, uniform wall thickness, high brightness inside and outside the pipe (the surface brightness of the steel pipe is determined by the surface grade of the steel plate), and can be arbitrarily determined. Therefore, it reflects its economy and aesthetics in high-precision, medium and low pressure fluid applications. use GB/T12770-2002 (Stainless steel welded steel pipe for mechanical structure). Mainly used in machinery, automobiles, bicycles, furniture, hotel and restaurant decoration and other mechanical parts and structural parts. Its representative materials are 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb, etc. GB/T12771-2008 (stainless steel welded steel pipe for fluid transportation). Mainly used for conveying low pressure corrosive medium. The representative materials are 06Cr19Ni10, 022Cr19Ni10, 06Cr19Ni110Ti, 00Cr17, 0Cr18Ni11Nb, 06Cr17Ni12Mo2, etc. We can offer Stainless Steel Pipe products, including Stainless Steel Capillary Pipe, Stainless Steel Precision Pipe, Stainless Steel Seamless Pipe, Stainless Steel Sanitary Pipe, Thick Wall Stainless Steel Pipe, Stainless Steel Bright Tube, Stainless Steel Needle Tube, Stainless Steel Fine Tube, Stainless Steel Coil, Welded Stainless Steel Pipe, Stainless Steel Industrial Pipe, Stainless Steel Round Tube, Medical Stainless Steel Tube, Stainless Steel Thin Wall Tube, Stainless Steel Shaped Tube, Stainless Steel Elbow, Stainless Steel Snake Bone Tube, Stainless Steel Decorative Tube, Stainless Steel Electronic Cigarette Tube, Stainless Steel Tube Processing, Copper Pipe, Titanium Alloy Tube, Aluminum Tube, and so on.

Stainless steel head manufacturing technology Stainless steel head is a common pipe connection, widely used in petroleum, chemical, pharmaceutical, food and other industries. Its manufacturing process mainly includes the following steps: 1. Material preparation: Select the appropriate stainless steel material, according to the specifications and requirements of the head for cutting, flanging, pressing and other processing. 2. Stamping molding: Put the cut stainless steel plate into the punching press, and press it into the shape of the head through the pressing and punching of the mold. Stamping is a key step in the manufacture of the head, which needs to ensure the accuracy of the die and the stability of the punch. 3. Welding: The stamped head is welded, usually using argon arc welding or TIG welding technology. When welding, it is necessary to control the welding temperature and welding speed to ensure the quality and strength of the weld. We can offer Stainless Steel Pipe products, including Stainless Steel Capillary Pipe, Stainless Steel Precision Pipe, Stainless Steel Seamless Pipe, Stainless Steel Sanitary Pipe, Thick Wall Stainless Steel Pipe, Stainless Steel Bright Tube, Stainless Steel Needle Tube, Stainless Steel Fine Tube, Stainless Steel Coil, Welded Stainless Steel Pipe, Stainless Steel Industrial Pipe, Stainless Steel Round Tube, Medical Stainless Steel Tube, Stainless Steel Thin Wall Tube, Stainless Steel Shaped Tube, Stainless Steel Elbow, Stainless Steel Snake Bone Tube, Stainless Steel Decorative Tube, Stainless Steel Electronic Cigarette Tube, Stainless Steel Tube Processing, Copper Pipe, Titanium Alloy Tube, Aluminum Tube, and so on.

why should stainless steel contain carbon? Carbon is one of the main elements of industrial steel. The properties and microstructure of steel are largely determined by the content of carbon in steel and its distribution form. The influence of carbon in stainless steel is particularly significant. The influence of carbon on the structure of stainless steel is mainly manifested in two aspects. On the one hand, carbon is the element of stable austenite, and the degree of action is very large (about 30 times nickel). On the other hand, due to the great affinity of carbon and chromium, the formation of a series of complex carbides with chromium. Therefore, from the strength and corrosion resistance of the candle performance of two points of view, the role of carbon in stainless steel is contradictory. Understanding the law of this influence, you can start from different requirements, choose different carbon content of stainless steel. For example, stainless steel, the most widely used in industry, is also the least: The standard chromium content gauge of these five steel numbers, Ocr13-4Crl3, is set at 12-14%, which is determined after taking into account the factors that carbon and chromium form chromium carbide. The purpose is to make the chromium content in the solid solution not lower than the minimum chromium content of 11.7% after carbon and chromium combine into chromium carbide. Ocrl3-2cr13 steel has good corrosion resistance, but its strength is lower than 3Crl3 and 4Crl3 steel, so it is mostly used to manufacture structural parts. The last two steel numbers can obtain high strength due to their high carbon content and are mostly used to manufacture spring, tool and other parts requiring high strength and wear resistance. For example, to overcome the intergranular corrosion of 18-8 inconel stainless steel, the carbon content of the steel can be reduced to less than 0.03%, or the addition of elements with a greater affinity than chromium and carbon (titanium or Niobium), so that it does not form chromium carbide, and if the high hardness and wear resistance become the main requirements, we can increase the carbon content of steel at the same time appropriately improve the chromium content, so that not only meet the requirements of hardness and wear resistance, but also take into account certain corrosion resistance function, industrial used as bearings, measuring tools and cutting tools stainless steel 9Cris and 9Crl7MoVCo, Although the carbon content is as high as 0.85 -- 0.95%, because their chromium content is also correspondingly improved, so still ensure the requirements of corrosion resistance. Generally speaking, the carbon content of stainless steel applied in the industry is relatively low, the carbon content of most stainless steel is between 0.1-0.4%, acid-resistant steel is the majority of carbon 0.1-0.2%. Stainless steel with carbon content greater than 0.4% accounts for only a small fraction of the total number of steel sizes, because in most service conditions, stainless steel is always primarily intended for corrosion resistance. In addition, the lower carbon content is also due to some technological requirements, such as easy welding and cold deformation. We can offer Stainless Steel Pipe products, including Stainless Steel Capillary Pipe, Stainless Steel Precision Pipe, Stainless Steel Seamless Pipe, Stainless Steel Sanitary Pipe, Thick Wall Stainless Steel Pipe, Stainless Steel Bright Tube, Stainless Steel Needle Tube, Stainless Steel Fine Tube, Stainless Steel Coil, Welded Stainless Steel Pipe, Stainless Steel Industrial Pipe, Stainless Steel Round Tube, Medical Stainless Steel Tube, Stainless Steel Thin Wall Tube, Stainless Steel Shaped Tube, Stainless Steel Elbow, Stainless Steel Snake Bone Tube, Stainless Steel Decorative Tube, Stainless Steel Electronic Cigarette Tube, Stainless Steel Tube Processing, Copper Pipe, Titanium Alloy Tube, Aluminum Tube, and so on.

We can offer Stainless Steel Pipe products, including Stainless Steel Capillary Pipe, Stainless Steel Precision Pipe, Stainless Steel Seamless Pipe, Stainless Steel Sanitary Pipe, Thick Wall Stainless Steel Pipe, Stainless Steel Bright Tube, Stainless Steel Needle Tube, Stainless Steel Fine Tube, Stainless Steel Coil, Welded Stainless Steel Pipe, Stainless Steel Industrial Pipe, Stainless Steel Round Tube, Medical Stainless Steel Tube, Stainless Steel Thin Wall Tube, Stainless Steel Shaped Tube, Stainless Steel Elbow, Stainless Steel Snake Bone Tube, Stainless Steel Decorative Tube, Stainless Steel Electronic Cigarette Tube, Stainless Steel Tube Processing, Copper Pipe, Titanium Alloy Tube, Aluminum Tube, and so on. According to related reports, Dong Hanshan, a professor of surface engineering at the School of Metallurgy and Materials of Mingham University, recently developed a technology that can make the surface of stainless steel have antibacterial ability for a long time. This new technology uses "active screen plasma" technology to "diffuse" silver, nitrogen and carbon into the surface of stainless steel to achieve a sustainable antibacterial effect. Compared with the previous technology that uses silver for antibacterial treatment, it is only "coating" or "coating" on the surface of stainless steel. After repeated use and cleaning and disinfection, it is easy to cause scratches or damage to the antibacterial surface. Not only does the technology improve the durability of the antibacterial to a certain extent, but it is also less prone to wear during cleaning or disinfection. At present, the new technology of "antibacterial stainless steel" has set off a new wave in the medical field. The birth of this new technology prevents "super bacteria" from spreading everywhere through stainless steel surfaces and medical equipment to a certain extent. In today's increasingly sophisticated medical community, "antibacterial stainless steel" will play a great role.

Stainless steel processing refers to the process of cutting, folding, bending, welding and other mechanical processing of stainless steel based on the properties of stainless steel to finally obtain stainless steel products required for industrial production. In the process of stainless steel processing, a large number of machine tools, instruments, stainless steel processing equipment. Stainless steel processing equipment is classified into shearing equipment and surface treatment equipment, and shearing equipment is further divided into flattening equipment and slitting equipment. In addition, according to the thickness of stainless steel, there are cold and hot rolling processing equipment. Thermal cutting equipment mainly includes plasma cutting, laser cutting, water cutting and so on. Stainless steel surface finish grade Original surface: No.1 surface that is subjected to heat treatment and pickling after hot rolling. Generally used for cold-rolled materials, industrial tanks, chemical industry equipment, etc., the thickness is thicker from 2.0MM-8.0MM. Dull surface: NO.2D cold-rolled, heat-treated and pickled, its material is soft and its surface is silvery-white luster, which is used for deep-drawing processing, such as automotive components, water pipes, etc. Matte surface: No.2B cold-rolled, heat-treated, pickled, and then finish-rolled to make the surface moderately bright. Due to the smooth surface, it is easy to regrind, making the surface brighter and widely used, such as tableware, building materials, etc. With surface treatments that improve mechanical properties, it is suitable for almost all applications. Coarse sand NO.3 is a product ground with a 100-120 grinding belt. Has better gloss, with discontinuous coarse lines. It is used for building interior and exterior decoration materials, electrical products and kitchen equipment, etc. Fine sand: NO.4 products ground with a grinding belt with a particle size of 150-180. Has better gloss, with discontinuous coarse lines, and the stripes are thinner than NO.3. It is used for baths, interior and exterior decoration materials of buildings, electrical products, kitchen equipment and food equipment, etc. #320 Product ground with No. 320 abrasive belt. It has better gloss, with discontinuous rough lines, and the stripes are thinner than NO.4. It is used for baths, interior and exterior decoration materials of buildings, electrical products, kitchen equipment and food equipment, etc. Hairline surface HAIRLINE: HLNO.4 is a product with a grinding pattern (subdivided 150-320) produced by continuous grinding with a polishing abrasive belt of appropriate particle size. Mainly used for architectural decoration, elevators, doors and panels of buildings, etc. Bright surface: BA is cold rolled, bright annealed, and flattened. Excellent surface gloss and high reflectivity. like a mirror surface. Used in home appliances, mirrors, kitchen equipment, decorative materials, etc. Application field: There are many reasons why surface finishing of stainless steel is important in architectural applications. Corrosive environments require smooth surfaces because smooth surfaces are less prone to fouling. Dirt deposits can rust or even cause corrosion in stainless steel. In spacious halls, stainless steel is the most commonly used material for elevator decorative panels. Although the fingerprints on the surface can be wiped off, it will affect the appearance. Therefore, it is best to choose a suitable surface to prevent fingerprints. Hygienic conditions are important in many industries, such as food processing, catering, brewing, and chemical industries, where surfaces must be easy to clean on a daily basis, often with chemical cleaning agents. Stainless steel is the best material for this. In public places, the surface of stainless steel is often scribbled. However, one of its important properties is that they can be washed away, which is a distinguishing feature of stainless steel over aluminum. The surface of aluminum tends to leave marks that are often difficult to remove. When cleaning the stainless steel surface, it should be cleaned along the lines of the stainless steel, because some surface processing lines are unidirectional. Stainless steel is best used in hospitals or other areas where hygiene is critical, such as: food processing, catering, brewing and chemical industry, not only because it is easy to clean every day, sometimes with chemical cleaning agents, but also because it is less prone to bacteria growth . Tests have shown that stainless steel performs as well as glass and ceramics in this regard. We can offer Stainless Steel Pipe products, including Stainless Steel Capillary Pipe, Stainless Steel Precision Pipe, Stainless Steel Seamless Pipe, Stainless Steel Sanitary Pipe, Thick Wall Stainless Steel Pipe, Stainless Steel Bright Tube, Stainless Steel Needle Tube, Stainless Steel Fine Tube, Stainless Steel Coil, Welded Stainless Steel Pipe, Stainless Steel Industrial Pipe, Stainless Steel Round Tube, Medical Stainless Steel Tube, Stainless Steel Thin Wall Tube, Stainless Steel Shaped Tube, Stainless Steel Elbow, Stainless Steel Snake Bone Tube, Stainless Steel Decorative Tube, Stainless Steel Electronic Cigarette Tube, Stainless Steel Tube Processing, Copper Pipe, Titanium Alloy Tube, Aluminum Tube, and so on.

How to deal with the black surface of stainless steel Toothpaste treatment: Squeeze some toothpaste on the black area of the stainless steel surface, and then wipe it back and forth with sandpaper. Under the action of friction, the black can be removed. White vinegar treatment: Put the stainless steel item into the pot, then pour white vinegar and water, the capacity should exceed the stainless steel item itself, turn on the fire and heat for a period of time, let the white vinegar and the black part fully react, then take out the stainless steel item and let it stand for two days, the black part will fall off. Cleaning powder treatment: Pour some water on the surface of the stainless steel, wipe it wet and sprinkle special cleaning powder, make sure that the black part is covered and wait for about 3 minutes, then wipe it with a scouring pad for a while, so that the black part will fall off. What is the reason for the blackening of the surface of stainless steel There is a protective film on the surface of stainless steel, which can prevent stainless steel from rusting and other problems. If the protective film is damaged, it will lose its protective effect, resulting in blackening, rusting and other problems. If some elemental dust, particles, etc. are attached to the surface of the stainless steel, in the case of heavy humidity, the two will form a micro-battery effect, that is, an electrochemical reaction will occur, and the protective film will be destroyed at this time, causing the surface of the stainless steel to blacken and corrode. If there are juices such as vegetables and noodle soup attached to the stainless steel surface for a long time, organic acids will be generated due to water and oxygen, and the protective film on the surface will also be corroded at this time. Similarly, when there are substances such as acids, alkalis, and salts attached to the surface, it will cause localized corrosion, resulting in blackening. We can offer Stainless Steel Pipe products, including Stainless Steel Capillary Pipe, Stainless Steel Precision Pipe, Stainless Steel Seamless Pipe, Stainless Steel Sanitary Pipe, Thick Wall Stainless Steel Pipe, Stainless Steel Bright Tube, Stainless Steel Needle Tube, Stainless Steel Fine Tube, Stainless Steel Coil, Welded Stainless Steel Pipe, Stainless Steel Industrial Pipe, Stainless Steel Round Tube, Medical Stainless Steel Tube, Stainless Steel Thin Wall Tube, Stainless Steel Shaped Tube, Stainless Steel Elbow, Stainless Steel Snake Bone Tube, Stainless Steel Decorative Tube, Stainless Steel Electronic Cigarette Tube, Stainless Steel Tube Processing, Copper Pipe, Titanium Alloy Tube, Aluminum Tube, and so on.

Auto parts processing technology: 1. Casting; 2. Forging; 3. Welding; 4. Cold stamping; 5.; 7. Metal cutting; 6. Heat treatment; 7. Assembly. Forging is a manufacturing method in which molten metal material is poured into a mold cavity, cooled and solidified to obtain a product. In the automobile industry, many parts are made of pig iron in pig iron, accounting for about 10% of the net weight of the vehicle, such as cylinder liners, gearbox housings, steering system housings, automobile rear axle housings, brake system drums, various Sand molds are generally used for the production of cast iron parts such as brackets. In the automotive industry, the production method of casting is widely used. Forging is divided into random forging and entity model forging. Random forging is a production method in which metal material blanks are placed on iron felts to withstand impact or burden, also known as "quenching". The blanks of vehicle worm gears and shafts are produced and processed by random casting. Solid model forging is a production method in which metal blanks are placed in the cavity of a forging die to withstand impact or load. Solid model forging is somewhat like the whole process of batter being rolled into cookies in a template. Cold die or sheet stamping die is a production method in which a sheet of metal material is cut or formed under force in a stamping die. Daily necessities, such as braised pots, lunch boxes, washbasins, etc., are all made by cold stamping. The auto parts produced and processed by cold stamping die include: auto engine oil pan, brake system bottom plate, auto window frame and most body parts. Such parts are generally formed by blanking, punching, bending, reverse edge, trimming and other processes. In order to better produce cold stamping parts, stamping dies need to be made. Electric welding is a production method in which two metal materials are locally heated or simultaneously heated and stamped. Generally, one hand holds the mask, and the other hand holds the electric welding tongs and welding wire connected with the cable, which is called manual arc welding. However, manual arc welding is rarely used in the automotive industry, and it is most widely used in car body production. The most important thing is welding. Welding is suitable for welding cold-rolled steel sheets by electric welding. In actual operation, two electrodes are used to pressurize two thick steel plates to make them bond together, and at the same time, heat and melt the current flow at the meeting point to make a firm and tight connection. Metal material turning production and processing is to use milling cutter to drill metal material blank step by step; so that the product can obtain the required product appearance, specification and roughness. The turning production and processing of metal materials includes two methods: milling and machining. Milling is a production method in which employees use hand-made tools for cutting. The operation is sensitive and convenient, and it is widely used for installation and maintenance. Processing and manufacturing rely on CNC lathes to realize drilling, including: turning, planing, milling, drilling, grinding and other methods. The heat treatment process is a way to reheat, insulate or cool solid steel to change its structure to meet the application or technical standards of the part. The temperature of the heating environment, the length of the holding time, and the speed of the cooling efficiency will cause different structural changes in the steel. Blacksmiths infiltrate heated cast iron into water to cool it quickly (experts call it heat treatment), which can increase the strength of aluminum parts, which is also a case of heat treatment processes. Heat treatment methods include quenching, quenching, heat treatment, quenching, and the like. Then according to certain regulations, the various components are connected to each other to form a complete vehicle. Whether it is a component or a complete vehicle, it needs to cooperate and relate to each other according to the requirements of the design drawings, so that the components or the complete vehicle can achieve the set characteristics. For example, when installing the transmission to the clutch housing, make sure that the axis of the transmission key shaft and the axis of the crankshaft are pointing. This core method is not adjusted by the installer (miller) during assembly, but only by the design and production adjustment. We can offer Stainless Steel Pipe products, including Stainless Steel Capillary Pipe, Stainless Steel Precision Pipe, Stainless Steel Seamless Pipe, Stainless Steel Sanitary Pipe, Thick Wall Stainless Steel Pipe, Stainless Steel Bright Tube, Stainless Steel Needle Tube, Stainless Steel Fine Tube, Stainless Steel Coil, Welded Stainless Steel Pipe, Stainless Steel Industrial Pipe, Stainless Steel Round Tube, Medical Stainless Steel Tube, Stainless Steel Thin Wall Tube, Stainless Steel Shaped Tube, Stainless Steel Elbow, Stainless Steel Snake Bone Tube, Stainless Steel Decorative Tube, Stainless Steel Electronic Cigarette Tube, Stainless Steel Tube Processing, Copper Pipe, Titanium Alloy Tube, Aluminum Tube, and so on.

We can offer Stainless Steel Pipe products, including Stainless Steel Capillary Pipe, Stainless Steel Precision Pipe, Stainless Steel Seamless Pipe, Stainless Steel Sanitary Pipe, Thick Wall Stainless Steel Pipe, Stainless Steel Bright Tube, Stainless Steel Needle Tube, Stainless Steel Fine Tube, Stainless Steel Coil, Welded Stainless Steel Pipe, Stainless Steel Industrial Pipe, Stainless Steel Round Tube, Medical Stainless Steel Tube, Stainless Steel Thin Wall Tube, Stainless Steel Shaped Tube, Stainless Steel Elbow, Stainless Steel Snake Bone Tube, Stainless Steel Decorative Tube, Stainless Steel Electronic Cigarette Tube, Stainless Steel Tube Processing, Copper Pipe, Titanium Alloy Tube, Aluminum Tube, and so on. 1. Product categories: contract simple and complicated diversified products and diversified sheet metal processing with different shapes. For example, stainless steel workbenches, high-end stainless steel hotel supplies, furniture furniture, stainless steel flower pots, stainless steel high-end equipment, stainless steel distribution boxes, stainless steel carts, stainless steel trash cans, stainless steel furniture products and other products. 2. Processing category: CNC machine tools (planing, shearing, folding, punching) high-precision machining business. 3. The coolant should be water-soluble cutting fluid, semi-synthetic, good for cooling and lubrication. 4. Although stainless steel is hard, it is also cotton, which means soft. The above-mentioned car method will be a mess. To process stainless steel, the turning tool must be ground well. The positive angle of the turning tool should be greater than 5, so that the cutting capacity can be increased, and the efficiency will be higher. Generally, the single side of the knife is 3MM. 5. Because stainless steel is easy to deform, drilling and tapping are very difficult, so to prevent overheating, spray oil on the processing surface. 6. In stainless steel welding, attention should be paid to the adjustment of the welding current. 7. Because the surface of the tool is combined with other non-metals or metals to form an alloy during processing, which makes the tool more likely to rust. I think it is possible to add an anti-oxidation film or anti-oxidation film to it. 8. Lathe stainless steel processing equipment and YT8 driveway.

The 304 stainless steel series are commonly used for stretch processing materials 304DQ? 304DDQ? 304DDQS, these stretch properties are very good. The grade of 304 tensile material produced by Taiyuan Iron and Steel Co., Ltd.: 0Cr18Ni9DQ, 0Cr18Ni9DDQ, 0Cr18Ni9DDQS. Implement the standard Q/TB3084-2010, the highest elongation can reach 68% The sulfur and phosphorus content of 304DQ series stainless steel drawing materials is lower than that of ordinary 304, and the other chemical components are basically the same. In terms of mechanical properties, the minimum elongation of 304DQ is required to be greater than 55%. 304SQ stainless steel tensile control What material is best for stainless steel deep drawing: For 201 stainless steel, it is recommended that you choose 201 high copper material, and for 304, it is recommended that you choose TISCO 304DQ material. The above materials are all deep drawing materials. Is the material of the 201 stainless steel plate J1 stretching material good? As long as it is the mainstream Hongwang Chengde material, there is no problem at present. If you need a good tensile effect, it is recommended to use high-copper and high-nickel materials, or Lianzhong L1 high-nickel materials can be used for flat panels, but the price is relatively expensive, and it is still cheaper than SUS304. We can offer Stainless Steel Pipe products, including Stainless Steel Capillary Pipe, Stainless Steel Precision Pipe, Stainless Steel Seamless Pipe, Stainless Steel Sanitary Pipe, Thick Wall Stainless Steel Pipe, Stainless Steel Bright Tube, Stainless Steel Needle Tube, Stainless Steel Fine Tube, Stainless Steel Coil, Welded Stainless Steel Pipe, Stainless Steel Industrial Pipe, Stainless Steel Round Tube, Medical Stainless Steel Tube, Stainless Steel Thin Wall Tube, Stainless Steel Shaped Tube, Stainless Steel Elbow, Stainless Steel Snake Bone Tube, Stainless Steel Decorative Tube, Stainless Steel Electronic Cigarette Tube, Stainless Steel Tube Processing, Copper Pipe, Titanium Alloy Tube, Aluminum Tube, and so on.

Black titanium stainless steel has the characteristics of environmental protection, corrosion resistance, water permeability resistance, wear resistance, abrasion resistance, and climate change resistance. Its surface is as smooth as a mirror, and it is a large-scale building decoration material. The surface of black titanium stainless steel is superior in corrosion resistance and wear resistance than ordinary stainless steel. It can resist smog corrosion for more than 10 years, and will not change color after more than 30 years of ultraviolet radiation. The main application areas are large-scale architectural decoration (passenger stations, stations, subways, airports, etc.), commercial decoration design of hotels and commercial buildings, public facilities, new residential decoration design, etc. The common subdivision types of black titanium stainless steel sheet are black titanium mirror stainless steel sheet, black titanium grinding stainless steel sheet, matte black titanium stainless steel sheet, black titanium brushed stainless steel sheet, black titanium random stainless steel sheet, black titanium sandblasting stainless steel sheet, etc. Black titanium brushed stainless steel plate is not only used in high-end brand stores, but also commonly used in home back walls, door frames, ceilings, hotels, KTV, bars and leisure clubs. The black titanium brushed stainless steel plate can also be processed by etching, sandblasting and other processing techniques, which can further layer the stainless steel plate. Mirror black titanium stainless steel plate is a kind of mirror stainless steel plate, also known as mirror black stainless steel plate. The main reason is that the surface looks like a mirror, the stainless steel plate of the mirror is coated with black titanium. Widely used in hotels, KTV, villas and other low-key luxury decoration places, the color is dark and light, the surface is smooth, and the reflection effect is good. Black titanium stainless steel wire Black titanium stainless steel is generally PVD vacuum nano-coating, and the main material is 201/304 stainless steel plate. Stainless steel decorative wire is manufactured by cutting, groove, bending and other processes: Cut - Cut to length and width as desired. Grooving, Bending: Grooving is a groove machine used to mark stainless steel material at the desired bending position, and then bend T-shape, U-shape, L-shape, profile and other required shapes. The scope of application of black titanium stainless steel molding: ceiling (u-shape), background wall (u-shape, T-shape), corner strip (L-shape). The combination of brushless bracket molding is like using brushless bracket molding to decorate the ceiling edge and tie bright ribbons all over the ceiling. The entire living room is simple, stylish, beautiful, with excellent texture and high cost performance. Black titanium stainless steel can also be used to decorate the background wall. The colors of the mirrors and lights reflect the gorgeous textures, and the clear frames enhance the overall sense of space. The black stainless steel frame is used as an isolation screen for the area space. The three-dimensional linear shuttle is located inside the regional space, improving the three-dimensionality and permeability of the regional space.

The difference between magnetic and non-magnetic stainless steel is that non-magnetic stainless steel has a higher anti-corrosion function than magnetic ones, but this difference is only in the daily use of knives and forks. Some stainless steel products cannot be used if they do not contain magnetism. Yes, such as pots and pans for induction cookers, and some parts of washing machines. Non-magnetic stainless steel in daily life is far less useful than magnetic ones. For example, stainless steel pipes used at home, if their magnetism is removed, their service life is actually not as long as that of ordinary iron pipes. Since the uses of tableware and other electrical appliances are different, it is never necessary to judge the quality of different categories based on their magnetic properties. We can offer Stainless Steel Pipe products, including Stainless Steel Capillary Pipe, Stainless Steel Precision Pipe, Stainless Steel Seamless Pipe, Stainless Steel Sanitary Pipe, Thick Wall Stainless Steel Pipe, Stainless Steel Bright Tube, Stainless Steel Needle Tube, Stainless Steel Fine Tube, Stainless Steel Coil, Welded Stainless Steel Pipe, Stainless Steel Industrial Pipe, Stainless Steel Round Tube, Medical Stainless Steel Tube, Stainless Steel Thin Wall Tube, Stainless Steel Shaped Tube, Stainless Steel Elbow, Stainless Steel Snake Bone Tube, Stainless Steel Decorative Tube, Stainless Steel Electronic Cigarette Tube, Stainless Steel Tube Processing, Copper Pipe, Titanium Alloy Tube, Aluminum Tube, and so on.

We can offer Stainless Steel Pipe products, including Stainless Steel Capillary Pipe, Stainless Steel Precision Pipe, Stainless Steel Seamless Pipe, Stainless Steel Sanitary Pipe, Thick Wall Stainless Steel Pipe, Stainless Steel Bright Tube, Stainless Steel Needle Tube, Stainless Steel Fine Tube, Stainless Steel Coil, Welded Stainless Steel Pipe, Stainless Steel Industrial Pipe, Stainless Steel Round Tube, Medical Stainless Steel Tube, Stainless Steel Thin Wall Tube, Stainless Steel Shaped Tube, Stainless Steel Elbow, Stainless Steel Snake Bone Tube, Stainless Steel Decorative Tube, Stainless Steel Electronic Cigarette Tube, Stainless Steel Tube Processing, Copper Pipe, Titanium Alloy Tube, Aluminum Tube, and so on. 1. If you look at 304 and 316 stainless steel with the naked eye, generally there is no difference, so many merchants sell 304 stainless steel as 316 for their own benefit, but the price difference between the two is still quite large, because 316 belongs to food Grade, better corrosion resistance, so the price of 316 will be more expensive than 304. If you spend 316 money but buy back 304 stainless steel tableware, it means that you have spent a lot of money. 2. Since the chemical components added to 304 and 316 are different, when distinguishing the two, professional stainless steel potions can also be used to distinguish them. After dripping the potion on the stainless steel, the surface of the 304 material is generally a little red, while the surface of the 316 material will be black. 3. If there is no professional potion, you can also use a magnet to test and distinguish. If the stainless steel is made of 304, it cannot be attracted by the magnet. However, the accuracy of this method is relatively low. 4. In fact, if it is just for home use, there is no need to choose 316 material, because the characteristics of 304 are also completely in line with household standards, so you can avoid buying only 304 products at the price of 316 material.

Both 304 and 316 stainless steel are commonly used stainless steel materials, and they are slightly different in terms of rust resistance. 304 stainless steel is a general-purpose stainless steel material, mainly used in the manufacture of kitchen utensils, decorations, building materials, etc. Its main component is chromium, accounting for about 18-20%, nickel accounting for 8-10.5%, and the rest are iron and other elements. 304 stainless steel has good antirust performance and can resist corrosion in common atmosphere, water, acidic and alkaline environments. However, in a chloride environment, the rust resistance of 304 stainless steel is relatively poor, and pitting and intergranular corrosion are prone to occur. 316 stainless steel is a stainless steel material with high strength and good corrosion resistance. It is mainly used in the manufacture of chemical equipment, marine equipment, medical equipment, seawater treatment equipment, etc. Its main components include chromium, nickel and molybdenum, wherein the chromium content is about 16-18%, the nickel content is about 10-14%, and the molybdenum content is about 2-3%. 316 stainless steel has excellent anti-rust performance, and has good anti-oxidation, corrosion resistance and high temperature resistance. It is resistant to chlorides and other strong acidic and alkaline environments, so it is widely used in marine environments and chemical environments. Therefore, in general, the rust resistance of 316 stainless steel is better than that of 304 stainless steel, especially in the chloride environment, the corrosion resistance of 316 stainless steel is stronger. We can offer Stainless Steel Pipe products, including Stainless Steel Capillary Pipe, Stainless Steel Precision Pipe, Stainless Steel Seamless Pipe, Stainless Steel Sanitary Pipe, Thick Wall Stainless Steel Pipe, Stainless Steel Bright Tube, Stainless Steel Needle Tube, Stainless Steel Fine Tube, Stainless Steel Coil, Welded Stainless Steel Pipe, Stainless Steel Industrial Pipe, Stainless Steel Round Tube, Medical Stainless Steel Tube, Stainless Steel Thin Wall Tube, Stainless Steel Shaped Tube, Stainless Steel Elbow, Stainless Steel Snake Bone Tube, Stainless Steel Decorative Tube, Stainless Steel Electronic Cigarette Tube, Stainless Steel Tube Processing, Copper Pipe, Titanium Alloy Tube, Aluminum Tube, and so on.

We can offer Stainless Steel Pipe products, including Stainless Steel Capillary Pipe, Stainless Steel Precision Pipe, Stainless Steel Seamless Pipe, Stainless Steel Sanitary Pipe, Thick Wall Stainless Steel Pipe, Stainless Steel Bright Tube, Stainless Steel Needle Tube, Stainless Steel Fine Tube, Stainless Steel Coil, Welded Stainless Steel Pipe, Stainless Steel Industrial Pipe, Stainless Steel Round Tube, Medical Stainless Steel Tube, Stainless Steel Thin Wall Tube, Stainless Steel Shaped Tube, Stainless Steel Elbow, Stainless Steel Snake Bone Tube, Stainless Steel Decorative Tube, Stainless Steel Electronic Cigarette Tube, Stainless Steel Tube Processing, Copper Pipe, Titanium Alloy Tube, Aluminum Tube, and so on. Generally, materials after cold rolling and annealing, such as 304 below 200HV, are all soft materials and are easy to process. Yield strength 16.5kgf/mm2 (170MPa). General principles: carbon, chromium... 304 stainless steel is the softest, has good corrosion resistance, heat resistance, low temperature strength and mechanical properties, good thermal workability such as stamping and bending, no heat treatment hardening phenomenon, and no magnetism. SUS304 itself is not magnetic, in...! Recommended 301 - good ductility, used for molding products. It can also be hardened by mechanical processing. Good weldability. Wear resistance and fatigue strength are better than 304 stainless steel. 302-The corrosion resistance is the same as that of 304, and the strength is better because of the relatively high carbon content. They are all relatively soft.

We can offer Stainless Steel Pipe products, including Stainless Steel Capillary Pipe, Stainless Steel Precision Pipe, Stainless Steel Seamless Pipe, Stainless Steel Sanitary Pipe, Thick Wall Stainless Steel Pipe, Stainless Steel Bright Tube, Stainless Steel Needle Tube, Stainless Steel Fine Tube, Stainless Steel Coil, Welded Stainless Steel Pipe, Stainless Steel Industrial Pipe, Stainless Steel Round Tube, Medical Stainless Steel Tube, Stainless Steel Thin Wall Tube, Stainless Steel Shaped Tube, Stainless Steel Elbow, Stainless Steel Snake Bone Tube, Stainless Steel Decorative Tube, Stainless Steel Electronic Cigarette Tube, Stainless Steel Tube Processing, Copper Pipe, Titanium Alloy Tube, Aluminum Tube, and so on. Titanium alloy pipeline is a kind of high strength, corrosion resistant metal material, because of its unique physical and chemical properties, has a wide range of applications in aerospace, nuclear industry, chemical industry, ocean engineering and other fields. Proper welding process can ensure the quality and performance of titanium alloy pipeline. The following is the welding process flow: 1. Material preparation: Select titanium alloy pipes in line with national standards, and clean them. 2. Parts processing: the titanium alloy pipe is cut and processed to make it meet the welding requirements. 3. Welding preparation: the titanium alloy pipe to be welded will be three-dimensional lap, to ensure that its clearance and spacing meet the requirements of the specification. At the same time, clean the welding surface. 4. Welding method selection: Select the appropriate welding method, such as TIG argon arc welding, according to the size, thickness, transverse welding force and equipment conditions of titanium alloy pipeline. 5. Welding parameter debugging: according to the material and thickness of titanium alloy pipeline, set the appropriate welding current, voltage, welding speed and other parameters. 6. Welding operation: welding operation of titanium alloy pipeline, and strictly control the temperature and oxidation in the welding process, to avoid adverse effects on titanium alloy materials. 7. Post-welding treatment: the titanium alloy pipeline after welding is cooled, cleaned and other treatment, to remove impurities such as welding slag and oxide. 8. Weld inspection: Check the weld of the welded titanium alloy pipeline to ensure that there are no cracks, defects and other problems. The welding process of titanium alloy pipeline needs to be combined with the actual situation to choose the appropriate method to ensure the welding quality and stability.

1. What is the difference between 304 stainless steel and 316 stainless steel: 1. The chemical composition is different: 304 has no molybdenum element, while 316 has molybdenum element. 2. Different corrosion resistance: 304 contains only 9% nickel elements, while 316 contains 12% nickel elements, so the corrosion resistance of 304 is worse. 3. Different performance: 304 has better corrosion resistance, acid resistance, and alkali resistance, while 316 has better chloride corrosion resistance and heat resistance due to the addition of molybdenum. 4. The scope of application is different: 304 is widely used to make pots and pans, etc., while 316 is widely used in the food industry, medical industry, watch industry, etc. 5. Different prices: Since 316 is food grade and has better corrosion resistance, the price of 316 will be more expensive than 304. 2. How to distinguish between 304 stainless steel and 316 stainless steel tableware 1. If you look at 304 and 316 stainless steel with the naked eye, generally there is no difference, so many merchants sell 304 stainless steel as 316 for their own benefit, but the price difference between the two is still quite large, because 316 belongs to food Grade, better corrosion resistance, so the price of 316 will be more expensive than 304. If you spend 316 money but buy back 304 stainless steel tableware, it means that you have spent a lot of money. 2. Since the chemical components added to 304 and 316 are different, when distinguishing the two, professional stainless steel potions can also be used to distinguish them. After dripping the potion on the stainless steel, the surface of the 304 material is generally a little red, while the surface of the 316 material will be black. 3. If there is no professional potion, you can also use a magnet to test and distinguish. If the stainless steel is made of 304, it cannot be attracted by the magnet. However, the accuracy of this method is relatively low. 4. In fact, if it is just for home use, there is no need to choose 316 material, because the characteristics of 304 are also completely in line with household standards, so you can avoid buying only 304 products at the price of 316 material. We can offer Stainless Steel Pipe products, including Stainless Steel Capillary Pipe, Stainless Steel Precision Pipe, Stainless Steel Seamless Pipe, Stainless Steel Sanitary Pipe, Thick Wall Stainless Steel Pipe, Stainless Steel Bright Tube, Stainless Steel Needle Tube, Stainless Steel Fine Tube, Stainless Steel Coil, Welded Stainless Steel Pipe, Stainless Steel Industrial Pipe, Stainless Steel Round Tube, Medical Stainless Steel Tube, Stainless Steel Thin Wall Tube, Stainless Steel Shaped Tube, Stainless Steel Elbow, Stainless Steel Snake Bone Tube, Stainless Steel Decorative Tube, Stainless Steel Electronic Cigarette Tube, Stainless Steel Tube Processing, Copper Pipe, Titanium Alloy Tube, Aluminum Tube, and so on.