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Incoloy825 screw bolt
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Anti-oxidation temperature 600~700 ℃. It can be used as high temperature and high pressure valve body and burner. The temperature range of gas turbine compressor blades is 700~800 ℃. The gas turbine compressor blade temperature is below 900 ℃. Chromium as a high temperature part of the boiler. Chromium has certain oxidation resistance and high temperature strength in the range of 600~700 ℃. It is suitable for high temperature parts such as steam turbine blades, nozzles, boiler burner valves, etc. The oxidation temperature is 700~800 ℃, which is the same as 1cr12 steel. The oxidation temperature is below 870°C. It can be used for boiler heating surface tubes, heating furnace components, heat exchangers, muffle furnaces, converters, nozzles, etc. In the temperature range of 400~900 ℃, it can resist high temperature corrosion and oxidation. It is suitable for pipe fittings with working temperature below 850 ℃ and anti-oxidation temperature below 980 ℃. Suitable for burner fire tube, turbine blade and furnace body. The anti-oxidation temperature of methane conversion device and high-temperature separation device is as high as 1035 ℃, which is used for heating furnace components; the anti-oxidation temperature of gas transmission system components with working temperature above 950 ℃ does not exceed the heat exchange tubes and furnace tube fittings for chemical industry and oil refining, and the working temperature is below 600-750 ℃.
0cr17ni7al high temperature pressure parts, working temperature below 550 ℃.
A steel having an austenitic structure at room temperature is an austenitic steel. Austenitic steel has no magnetic structure and good cold working properties. Its corrosion resistance is better than 430 steel and other martensitic steels, and its heat resistance is better. For example, the reason for the formation of 1Cr18Ni9Ti: there are three basic phases in carbon steel, namely ferrite, austenite and cementite. After alloying elements are added to steel, they can be dissolved in three phases to form alloy ferrite, alloy austenite and alloy cementite. Adding nickel, manganese, carbon, nitrogen and other elements to the steel can reduce the temperature of A1 and A3 and move the s point and e point in the iron-carbon phase diagram. In terms of the demand for 825 bolts and bolts in Inkloy, the economies of Southeast Asian countries started late and their economic foundations were relatively weak, especially the development of the steel industry was lagging behind. However, in recent years, with the deepening of economic globalization and the continuous adjustment of the division of labor in the global industrial chain, factors such as cheap human resources in Southeast Asia have attracted a lot of investment and accelerated the process of industrialization in the region. The rapid development of the construction industry, which mainly meets domestic demand, and the manufacturing and processing industry, which mainly meets external demand, has driven the continuous growth of steel demand. It is estimated that the ten ASEAN countries (the moon on the horse grassland, my mother's eyes... "At 19:10 on May 16, the sun still stubbornly refused to go down. At the Yihai Energy Digou Mine in Haixi Mongolian and Tibetan Autonomous Prefecture of Qinghai Province, there were deafening songs on the second floor of the employee activity center. As a result, the austenite region expands. When the content of Ni or Mn, which is infinitely miscible with γ-Fe, is large, the austenite region can be extended to room temperature. Thus, the steel is still present in the form of single-phase austenite at room temperature.
The chemical composition of the steel is: C:0.30-0.40%,Cr:24-26%,Mn:1.2%,Si:1.3-1.5%,Ni:7-9%,Mo:0.3-0.4%,V:0.3-0.5%,re:0.2-0.3%,W:0.2-0.3%,N:0.2-0.3%,s ≤ 0.04%,P ≤ 0.04%; the residue is iron and inevitable impurities. Compared with the prior art, the steel grade of the low-nickel and high-temperature resistant steel material of the present invention is: 35 Cr25Ni7SiMnMovren; compared with the prior art, the material has low nickel content, good comprehensive high temperature resistance, long service life, and good mechanical properties, The workpiece has a high yield, is suitable for various casting processes, does not require heat treatment, can be supplied in a cast state, has a wide application range, and has low production cost. Not in heaven. Commonly used tool wear-resistant materials are silicon carbide, boron nitride, alumina and cemented carbide. They are high hardness, high melting point materials, at higher temperatures can maintain sufficient hardness and wear resistance. Silicon carbide (SIC) is an atomic crystal whose crystal structure is similar to that of diamond.
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Incoloy825 screw bolt
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