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YinTuo

Doğum tarihi Mart 16, 1995 · Bay
Yi

Ekleyen
Nisan 8, 2021
Ferritic stainless steel generally has a Cr content between 13%-30%, and a C content generally less than 0.25%. After annealing or aging, carbides precipitate at the ferrite grain boundaries to achieve corrosion resistance. Generally speaking, the corrosion resistance of ferritic stainless steel is lower than that of austenitic stainless steel and duplex steel, but higher than that of martensitic stainless steel. However, due to its low production cost compared to other stainless steels, it has a wide range of applications in the fields of chemical and petrochemical applications where corrosion-resistant media and strength are not required. For example, it is widely used in environments such as sulfur-containing petroleum, hydrogen sulfide, room temperature nitric acid, carbonic acid, hydrogen ammonia mother liquor, high-temperature ammonia produced by urea, urea mother liquor, and vinyl acetate and acrylonitrile produced by Vinylon. Huzhou Nanxun Yintuo Special Material Technology Co., Ltd. is committed to the production of yintuo austenitic stainless steel seamless pipe and all kinds of seamless pipes. If you are interested in our products, please feel free to contact us: https://www.yintuosteel.com/product/ferritic/ferritic-stainless-steel-seamless-pipe-and-tube.html [img]http://www.gelbize.com/PF.Base/file/attachment/2021/04/545acf3e89a5d3dd32ce9ab948df99e3_view.jpg[/img]

Ekleyen
Mart 25, 2021
Cold drawn is to pull the steel bar to any point K in the strengthening stage of its σ-ε curve, and then slowly unload the load. When it is loaded again, its yield limit will be increased, and its plastic deformation capacity will be somewhat reduced. Cold drew generally can control the cold drawing rate. After the steel bar is cold drawn, the general yield point can be increased by 20% to 50%. The cold pull is to forcibly pull the light round steel bar through the hole of the hard alloy wire drawing die. The cold pull effect is stronger than that of pure tension. The steel bar is not only pulled but also squeezed at the same time. After one or more cold pulls, the yield point of cold pull low carbon steel wire can be increased by 40% to 60%, but it loses the plasticity and toughness of soft steel and has the characteristics of hard steel. Cold rolling is the rolling of round steel on a cold rolling mill into steel bars with regular cross-sections, which can improve its strength and adhesion to concrete. When the steel bar is cold rolled, the longitudinal and transverse deformations occur simultaneously, so it can better maintain its plasticity and internal structural uniformity. Huzhou Nanxun Yintuo Special Material Technology Co., Ltd. is a company specializing in the production of alloy steel seamless pipe, dedicated to the production of nickel alloy seamless pipe and tube. We provide customers with the best quality products and are favored by customers. If you want to buy our seamless pipes, please feel free to contact us: https://www.yintuosteel.com/

Ekleyen
Mart 18, 2021
The development of steel pipe production technology began with the rise of the bicycle manufacturing industry, the development of petroleum in the early 19th century, the manufacture of ships, boilers, and aircraft during the two world wars, the manufacture of thermal power boilers after the Second World War, the development of the chemical industry, and the development of the chemical industry. The drilling, production and transportation of oil and natural gas have strongly promoted the development of the steel pipe industry in terms of variety, output and quality. Steel pipe is not only used to transport fluids and powdered solids, exchange heat, and manufacture mechanical parts and containers, it is also an economical steel. The use of steel pipes to manufacture building structure grids, pillars and mechanical supports can reduce weight, save metal by 20-40%, and realize factory mechanized construction. Seamless steel pipes and stainless steel pipes are two categories with a wide range of applications. Seamless steel pipe is one of the important raw materials in economic construction and is known as the industrial blood vessel. It is widely used as a pipe for the machinery industry, pipe for the petroleum geology industry, pipe for the chemical industry, power station boiler and heat exchanger tube, etc. As a manufacturer of stainless steel seamless pipe, Huzhou Nanxun Yintuo Special Material Technology Co., Ltd. is committed to producing ferritic stainless steel seamless pipe and tube. Treat customers with high-quality products and attentive service. If you need to buy seamless pipes, we will be your best choice: https://www.yintuosteel.com/

Ekleyen
Mart 11, 2021
Because stainless steel seamless pipes can reduce the risk of impurities, improve corrosion resistance, and reduce installation costs in many applications, they have become the preferred pipe fittings in extreme environments. In the oil and gas industry, seamless pipes are mainly used for control pipelines, chemical reagent injection pipelines and subsea safety valves. In the chemical process and instrumentation industry, there are also many places where seam pipes are used, including steam tracing tube bundles, flow measurement and sensing, and liquid and gas transmission applications. Given that current manufacturers need to process smaller samples at higher speeds, small diameter tubes are a reliable choice for GC and HPLC equipment. Stainless steel seamless ultra-thin tubes can be used to detect many such high-precision systems. New applications for seamless pipes include compressed natural gas delivery sites for vehicle refueling and hydrogen delivery sites for material transportation. In such applications, because the seamless pipe does not need to use multiple accessories, it can save time and labor. Seamless pipes are also used in other industries, such as aerospace, defense, alternative energy, shipbuilding, and healthcare. Huzhou Nanxun Yintuo Special Material Technology Co., Ltd. is a manufacturer dedicated to the production of ferritic stainless steel seamless pipe and tube. If you need to order seamless pipes, you can contact us: https://www.yintuosteel.com/product/ferritic/ferritic-stainless-steel-seamless-pipe-and-tube.html

Ekleyen
Şubat 24, 2021
A common misconception about stainless steel is that it is not affected by corrosion. Although misleading, the amazing success of metal makes this common belief understandable. What makes stainless steel resistant? Stainless steel is an alloy steel containing at least 10.5% chromium. When chromium comes into contact with oxygen, it forms a natural barrier called the "passivation film" of chromium oxide. Although only micrometers thick, this invisible inert film can repair itself. In order to ensure that stainless steel itself can "self-repair", the finished product, the fastener, needs to go through a process after its manufacturing process is completed. This process is known as "passivation" has become very controversial and seems to have become less clear due to external forces such as environmental regulations and high costs. Technically speaking, it is still necessary to meet military and aerospace requirements. The fasteners are submerged in a nitric acid solution. This acid treatment, also known as pickling, can remove impurities in the manufacturing process, including oil and grease, and fine metal particles from fastener molds. By removing these external barriers or obstacles, the acid helps to accelerate the formation of the chromium oxide film. However, although stainless steel can withstand most of the effects of corrosion, it is still affected by a few of corrosion and it may also have a potentially significant impact. Huzhou Nanxun Yintuo Special Material Technology Co., Ltd. can produce super austenitic stainless steel seamless pipe and tube, austenitic stainless steel seamless tube and other stainless steel seamless tubes. Please feel free to contact us if you need it: https://www.yintuosteel.com/product/austenitic/austenitic-stainless-steel-seamless-tube.html

Ekleyen
Aralık 21, 2020
Huzhou Nanxun Yintuo Special Material Technology Co., Ltd. specializes in the development and production of high-quality ferritic stainless steel seamless pipe and tube, nickel-nickel alloy and seamless pipe. Because ordinary ferritic stainless steel has low cost, good corrosion resistance, especially excellent stress corrosion resistance, but its plasticity is poor. High-purity ferritic stainless steel has a very low total content of C and N, so its plasticity and toughness are significantly improved, and it can effectively prevent intergranular corrosion. Ferritic stainless steels have 475℃ brittleness and phase precipitation embrittlement tendency. Therefore, they can only be used as corrosion-resistant steel and anti-oxidation steel below 300℃. They are used in oxidizing acids and most organic acids and organic acid salts. It has good acid resistance in its aqueous solution. Often used to make chemical containers. Ferritic stainless steel generally has a pure ferrite structure at room temperature, the strength is not very high, the plasticity and toughness are good; if it is heated to a high temperature, a small amount of austenite structure may also appear (for the chromium content Lower steel) or no austenite structure at all, so a small amount or no martensite structure may appear under the action of the thermal cycle of the welding process. Therefore, after welding, this kind of steel will not have a significant decrease in strength or quench hardening. Even if there is a little martensite structure, it can be solved by post-weld heat treatment. It can be said that the room temperature strength of welded joints of this kind of steel is not the main contradiction of welding; and because the welding thermal expansion problem is far smaller than that of austenitic steel, the problems of welding hot and cold cracks are not very prominent. Generally speaking, ferritic stainless steel is not as good as austenitic stainless steel. It mainly refers to the problem that the welding process may cause the ductility and toughness of the welded joint to decrease, that is, embrittlement. As with the welding of other types of stainless steel, how to ensure that the ferritic stainless steel welded joint has the same corrosion resistance as the base material is also a key issue for welding; also for ferritic stainless heat-resistant steel, the welded joint is at high temperature. The problem of gradual embrittlement that may occur under long-term service must also be paid attention to. We are constantly moving forward, but we also see the stars and ambitious ambitions. For more information, please contact us: https://www.yintuosteel.com/product/austenitic/austenitic-stainless-steel-seamless-tube.html . Christmas time is here. I hope you have a wonderful New Year. May hold happy hours for you. [img]http://www.gelbize.com/PF.Base/file/attachment/2020/12/75e15c8f3def6565335f1b16bddf378d_view.jpg[/img]

Ekleyen
Aralık 14, 2020
Huzhou Nanxun Yintuo Special Material Technology Co., Ltd. specializes in the development and production of high-quality duplex stainless steel pipe, nickel-nickel alloy and seamless pipe for sale. In terms of product specifications, the general use of medium and small diameter stainless steel pipes is greater than the demand, large diameter and high demand stainless steel pipes. In order to meet the needs of the increasing popularity and application of duplex stainless steel, my country's iron and steel enterprises have also continued to increase R&D and production in this area. Chemical and petrochemical processing industry: The chemical industry is an earlier and more application of duplex stainless steel. The catalyst tube of the medium and small methanol synthesis reactor adopts duplex stainless steel, the large and medium-sized device adopts 2205 steel pipe, and the imported tube is mostly adopted. Petroleum and natural gas industry: This is one of the main applications of duplex stainless steel in foreign countries. The production of small duplex stainless steel welded pipes is relatively mature in China, but the production process of larger seamless pipes and welded pipes needs to be developed . In addition, how to reduce the price of duplex stainless steel products is also related to the development of domestic duplex stainless steel. It is important to expand production and produce suitable products, but it is important to adopt new technologies and new technologies, replacing metallic molybdenum with molybdate balls, and replacing metallic nickel with nickel oxide, to reduce smelting costs, promote duplex stainless steel continuous casting technology, and increase product yield Waiting cannot be ignored. We are constantly moving forward, but we also see the stars and ambitious ambitions. For more information, please contact us: https://www.yintuosteel.com/product/nickel-alloy/nickel-alloy-seamless-pipe-and-tube.html. Wishing you a song in your heart at Christmas and blessings all year long.

Ekleyen
Aralık 14, 2020
It seems that Christmas time is here once again, and it is time again to bring in the New Year. We wish the merriest of Christmas to you and your loved ones, and we wish you happiness and prosperity in the year ahead.Huzhou Nanxun Yintuo Special Material Technology Co., Ltd. specializes in the development and production of high-quality stainless steel seamless pipe and nickel-nickel alloys. Stainless steel relies on a very thin, strong, dense and stable chromium-rich oxide film (protective film) formed on its surface to prevent oxygen atoms from continuing to penetrate and continue to oxidize, thereby obtaining the ability to resist corrosion. Once this film is continuously destroyed for some reason, oxygen atoms in the air or liquid will continuously infiltrate or iron atoms in the metal will continue to separate out, forming loose iron oxide, and the metal surface will continue to be rusted. There are many forms of damage to this surface film, and the following are more common in daily life: 1. The surface of stainless steel has accumulated dust containing other metal elements or attachments of heterogeneous metal particles. In humid air, the condensed water between the attachments and stainless steel connects the two into a micro battery, triggering an electrochemical reaction , The protective film is damaged, which is called electrochemical corrosion. 2. The surface of stainless steel adheres to the organic juice (such as melon, vegetable, noodle soup, sputum, etc.), which forms organic acid in the presence of water and oxygen, and the organic acid will corrode the metal surface for a long time. 3. The surface of stainless steel adheres to containing acid, alkali, and salt substances (such as alkaline water and lime water splashing on the decoration wall), causing local corrosion. 4. In polluted air (such as the atmosphere containing a large amount of sulfide, carbon oxide, and nitrogen oxide), it will form sulfuric acid, nitric acid, and acetic acid liquid spots when encountering condensed water, causing chemical corrosion. We are constantly moving forward, but we also see the stars and ambitious ambitions. For more information, please contact us: https://www.yintuosteel.com/. May the glow of Christmas candle fill your heart with peace and pleasure and make your New Year bright. Have a love filled Christmas and New Year! [img]http://www.gelbize.com/PF.Base/file/attachment/2020/12/0e31fbf16b3f357ba06086ed81900eb6_view.jpg[/img]

Ekleyen
Aralık 7, 2020
Huzhou Nanxun Yintuo Special Material Technology Co., Ltd. specializes in the development and production of high-quality stainless steel seamless tubes and nickel-nickel alloys. The production methods of stainless steel seamless pipe are diversified. There are mainly extrusion units, periodic pipe rolling units, pipe jacking units, piercing and rolling (piercing + cold rolling, cold drawing) and other production methods, and a small amount of forging boring is used. ways to produce. Extrusion unit is the main unit for producing stainless steel seamless pipes in the world. The main production process of hot-processed stainless steel seamless pipes abroad is hot extrusion. Basically, two-roll cross-rolling and piercing are no longer used to provide blank pipe production for cold processing. method. The quality of the products produced by the extrusion method is stable, and the variety is flexible. It can directly produce hot-extruded finished pipes, and can also produce various special-shaped section stainless steel pipes, but the yield rate is low. In order to increase the yield rate, foreign manufacturers have improved the production process: for high-demand varieties, generally use the production process of pre-drilling, hydraulic punching machine reaming and extruding into tubes; for cold-worked raw material pipes that are generally required, they can be used according to specific conditions. According to different production processes, the solid blanks for small-sized steel pipes are directly pierced and extruded into tubes on the vertical hydraulic piercing machine, and the blanks used for medium-sized steel pipes are pre-drilled as much as possible, and the vertical hydraulic piercing machine expands and extrudes into tubes. The billet used for large-size steel pipes is pre-drilled with larger holes and directly enters the extruder to be extruded into a pipe. The hot working characteristics of stainless steel bring great difficulties to the hot rolling production, especially the cross-rolling piercing process, the tube billet is prone to internal cracks during the rolling process, and this method is generally not used to produce stainless steel seamless tubes in foreign countries. However, in the early days of the founding of the People’s Republic of China, there were only automatic tube rolling mills. In production practice, a set of production technology for hot-rolled stainless steel seamless pipes was gradually summarized, which can be produced on a variety of tube rolling mills, such as automatic tube rolling mills and precision tube rolling mills. , Periodic tube rolling unit, three-roll tube rolling unit, etc. At present, the hot-rolling process of "cross-rolling piercing + tube rolling" used in my country to produce stainless steel seamless pipes is rare in the world. We are constantly moving forward, but we also see the stars and ambitious ambitions. For more information, please contact us: https://www.yintuosteel.com/ [img]http://www.gelbize.com/PF.Base/file/attachment/2020/12/53d2b28e71ea288a19126e59e47d5aa1_view.jpg[/img]

Ekleyen
Kasım 23, 2020
Huzhou Nanxun Yintuo Special Material Technology Co., Ltd. is a professional supplier of stainless steel seamless pipes, including the production of ferritic stainless steel seamless pipe and tube and austenitic stainless steel seamless tube. Now let me introduce the stainless steel performance of ferritic stainless steel seamless pipe and tube. If you are interested, please contact us:https://www.yintuosteel.com/product/ferritic/ferritic-stainless-steel-seamless-pipe-and-tube.html Ferritic stainless steel (400 series) contains 15% to 30% chromium and has a body-centered cubic crystal structure. This type of steel generally does not contain nickel, and sometimes also contains a small amount of Mo, Ti, Nb and other elements. This type of steel has the characteristics of large thermal conductivity, small expansion coefficient, good oxidation resistance, and excellent stress corrosion resistance. It is mostly used for making atmospheric resistance. , Water vapor, water and oxidizing acid corroded parts. The price of ferritic stainless steel is not only relatively low and stable, but also has many unique characteristics and advantages. It has been proved that in many application fields where only austenitic stainless steel (300 series) can be used, ferritic stainless steel is an extremely An excellent alternative material, ferritic stainless steel does not contain nickel. The main elements are chromium (10%) and iron. Chromium is a particularly corrosion-resistant element for stainless steel, and its price is relatively stable. The application of out-of-furnace refining technology (AOD or VOD) can greatly reduce interstitial elements such as carbon and nitrogen, which makes this type of steel widely used. Its corrosiveness is as follows: (1) Uniform corrosion. Chromium is the easiest element to passivate. In the atmosphere, iron-chromium alloys with a chromium content of more than 12% can be self-passivated. In the oxidizing medium, the chromium content can be passivated when the content is more than 17%. In some highly corrosive medium, high chromium and adding molybdenum, nickel, copper and other elements can obtain good corrosion resistance. (2) Intergranular corrosion. Ferritic stainless steel and austenitic stainless steel will have intergranular corrosion, but sensitization treatment and heat treatment to avoid this corrosion are just the opposite. Ferritic stainless steel is prone to intergranular corrosion from rapid cooling above 925°C, and the state (sensitized state) that is prone to intergranular corrosion can be eliminated after a short period of tempering at 650-815°C. The intergranular corrosion of ferritic steel is also the result of chromium depletion caused by carbide precipitation. Therefore, reducing the carbon and nitrogen content in the steel and adding elements such as titanium and niobium can reduce the susceptibility to intergranular corrosion. (3) Resistance to stress corrosion cracking. Due to the characteristics of the structure, ferritic stainless steel is corrosion-resistant in the medium where austenitic stainless steel produces stress corrosion cracking. We create products with our heart. If you are interested in our products and want to order or learn more, you can click the following link: ferritic stainless steel seamless pipe and tube. [img]http://www.gelbize.com/PF.Base/file/attachment/2020/11/4cfbfc151694971968b6f66001dbf46f_view.jpg[/img]