The petrochemical industry, including the chemical fertilizer industry, has a great demand for stainless steel pipes. Stainless steel pipes are mainly used in this industry, including, , l, etc., with an outer diameter of about ￠ - ￠ and a wall thickness of about mm-mm (generally medium and low pressure transmission pipes with a specification of more than & phi; mm). The specific application fields are: furnace pipes, material transmission pipes, heat exchanger pipes, etc.CE--“ Code for design of cold formed stainless steel structural parts & rdquo; And & ldquo; jointly published by nidi and euro inox; Structural stainless steel design manual & rdquo; The design of structural parts for buildings with long service life and good integrity has been simplified.Sipovo, in which the carbon content is represented by the intermediate value & times; , the letter C: represents carbon, and K: represents steel for carburizing. For example, the carbon content of carbon coil sc is .-.%. The grades of silicon steel sheets in China and Japan are.Rheological and thermal changes in the quenching process of decorative stainless steel pipe the cooling characteristics of submerged quenching of stainless steel plate are numerically simulated by using the Euler multi fluid model in AVL fire software, and the numerical results are compared with the experimental results. In the research, the quenching medium is water. The mass, momentum and energy equations of gas-liquid two-phase of quenching medium and the quenching heat conduction equation of stainless steel workpiece are solved by numerical simulation. Based on the principle of equal heat flux between quenching medium and workpiece, the temperature field of quenching medium and workpiece is solved by coupling. The comparison between the numerical simulation and experimental results of decorative stainless steel pipe shows that the numerical simulation results of workpiece temperature are in good agreement with the experimental data. The model can reliably simulate the quenching process of workpiece, and can be extended to the multiphase flow simulation in complex system to guide the actual production. The single pass thermal simulation compression experiment of Cr super martensitic stainless steel was carried out by Gleeble thermal simulation tester to study the thermal deformation behavior at ~ ℃ and strain rate of . ~ s-, and the microstructure evolution law of grains under different conditions was analyzed; Based on Sellars hyperbolic sinusoidal model the flow stress constitutive equation of Cr super martensitic stainless steel was constructed. The results show that the peak stress decreases with the increase of deformation temperature and the decrease of strain rate; With the increase of deformation temperature, the grain grows and coarsens gradually. With the increase of strain rate, the dynamic recrystallized grains are obviously refined. The thermal deformation activation energy Q = . JMOL of decorative stainless steel pipe is calculated, and the expression of Zener Hollomon parameter is obtained. Different feedstocks were prepared by mixing crmnmon nickel free austenitic stainless steel powder prepared by aerosol and wax based binder. The effects of binder ratio and powder loading on the rheological properties of feed were studied by rh high pressure capillary rheometer. Non Newtonian index n,SipovoStainless steel water purification pipe, viscous flow activation energy E and comprehensive rheological factor alpha are calculated by second order model regression analysis; STV. The results show that the prepared feeds are pseudoplastic fluid. The binder system was composed of % microcrystalline wax (MW), % high density polyethylene (HDPE), % ethylene vinyl acetate copolymer (EVA) and % stearic acid (SA). The powder loading was vol%. The feed had good comprehensive rheological properties. In order to study the cementitious properties of stainless steel AOD slag, stainless steel AOD slag was used to replace some cement, and its effects on the working properties and mechanical properties of cement mortar were studied. The results show that using stainless steel AOD slag to replace cement from ~ %, with the increase of the content of stainless steel AOD slag, the water consumption of standard consistency of cement first decreases and then increases. When the content is %, the water reduction effect of stainless steel AOD slag is good; With the increase of the content of stainless steel AOD slag, the strength of cement mortar decreases in turn,Sipovo5cr15mov stainless steel plate, indicating that the cementitious activity of stainless steel AOD slag is small.Dresden,The corrosion resistance is the same and the strength is better because the carbon content is relatively high.Stainless steel pipe, which was produced and used in China at the end of the s, is a new family emerging in the field of pipe materials. It has been widely used in building water supply and direct drinking water pipelines.Austenitic stainless steel has good resistance to uniform corrosion, but there are still the following problems in local corrosion resistance: intergranular corrosion of austenitic stainless steel. Austenitic stainless steel will have intergranular corrosion when it is kept warm at ~ ℃ or cooled slowly. The higher the carbon content, the greater the tendency of intergranular corrosion. In addition, which is caused by corrosion of the primary cell. This intergranular corrosion phenomenon also exists in the ferritic stainless steel mentioned above.

Stainless steel pipes and water transmission equipment for fluid transportation such as water and gas are advanced basic water purification materials in the world. They have strong anti-corrosion performance, which can not be compared with cast iron pipes, carbon steel pipes and plastic pipes.　　SPHCSPHC—& mdash; In the first place, s is the abbreviation of steel, P is the abbreviation of plate, and C is the abbreviation of commercial. It generally represents hot-rolled steel plate and strip.Only soluble paper or the combination of soluble paper and blocking plate is used for blocking ventilation protection (i.e. solid core welding wire + TIG + water-soluble paper)Excellent service,Model & mdash; other properties are similar except that the risk of weld corrosion is reduced due to the addition of titanium.The intergranular corrosion of austenitic stainless steel can be prevented by adding Ti, Nb and other elements that can form stable carbides (tic or NBC) and avoiding the precipitation of crc on the grain boundary.No solution treatment. The alloy elements do not dissolve into the matrix, resulting in low alloy content and poor corrosion resistance.

Application: utility boiler industry, mainly in key parts such as high temperature section of superheater and reheater.Process inspection,When using this method, it should be noted that the water-soluble paper should be double-layer and must be pasted well otherwise it is easy to cause damage and fall off of the water-soluble paper, resulting in loss of argon protection of the inner weld and oxidation, resulting in cutting of the weld junction and re welding, which can not ensure the welding quality and seriously affect the construction period. Therefore, the water-soluble paper should be strictly checked and pasted before welding.In the grades of Japanese steel (JIS Series), ordinary structural steel is mainly composed of three parts, which represent the material, such as s (steel) represents steel and f (ferrum) represents iron; The second part represents different shapes, types and uses, such as P (plate) represents plate, t (tube) represents tube, and K (kogu) represents tool; The third part represents the characteristic number, which is generally low tensile strength. For example: SS & mdash& mdash; One s represents steel, and the second s represents & ldquo; Structure & rdquo; (structure), is the lower limit tensile strength of MPa, resulting in low alloy content and poor corrosion resistance.Sipovo, due to the end of the glorious history of galvanized steel pipe, various new plastic pipes and composite pipes have developed rapidly, but various pipes still have some deficiencies in varying degrees, which are far from fully meeting the needs of water supply pipe system and the national requirements for drinking water and related water quality. Therefore, relevant experts: building water supply pipes will eventually return to the era of metal pipes. According to foreign application experience, stainless steel pipe is recognized as one of the pipes with good comprehensive performance in metal pipe.Deburring: after the pipe is cut off, the burr shall be removed to avoid cutting the sealing ring.Assembly: the sealing ring shall be correctly installed in the U-groove of the pipe fitting, put the pipe into the socket of the pipe fitting and wait for crimping.