The recrystallization temperature changes with the shape variable. When the shape variable is %, the recrystallization temperature drops to ℃, and the recrystallization annealing temperature of cold deformed austenitic stainless steel is ~ ℃. At ℃, it needs to be kept warm for h, fully burned at ℃, and then water-cooled.When water-soluble paper is used to block the ventilation, due to the ventilation from the weld center, the ventilation pipe shall be pulled out quickly at the later sealing link,Charlotte-amariaQuotation for 2205 stainless steel plate, and the residual argon inside shall be used for protection, so as to quickly finish the bottom and seal the mouth.Charlotte-amaria,Someone asked whether the stainless steel pipe was rusted and caused toxic problems?Several kinds of stainless steel backing welding used for stainless steel backing welding usually adopt TIG process. According to the actual situation of the site, professional L stainless steel pipe, s stainless steel pipe, L stainless steel pipe and other special products old brands, with advantages in price and guaranteed quality. We can use the following four kinds of backing welding.Murghob,Stress corrosion cracking (SCC) refers to the cracking caused by the combined action of stress corrosion stress (mainly tensile stress) and corrosion of austenitic stainless steel Austenitic stainless steel is prone to stress corrosion in corrosive media containing chloride ions. When the Ni content reaches % - %, it is a long-term enterprise engaged in stainless steel plate, stainless steel coil, stainless steel belt and stainless steel pipe. Welcome to consult. The stress corrosion tendency of austenitic stainless steel is very large. Continue to increase the Ni content to ~ %, an early stainless steel similar to Brinell high chromium steel. It is also used for surgical tools, which can be made very bright. Model & mdash; Ferritic stainless steel for decoration, such as automotive accessories. Good formability, but poor temperature resistance and corrosion resistance.Stainless steel, precipitation hardening stainless steel and high alloy with iron content less than % are usually named by patent name or trademark.

Section shape stainless steel pipe can be divided into round pipe and special-shaped pipe according to the section shape. Special shaped tubes include rectangular tubes,Charlotte-amariaStainless steel honeycomb tube, rhombic tubes, elliptical tubes, hexagonal tubes, tools and mechanical parts. Compared with circular pipe, special-shaped pipe generally has large moment of inertia and section modulus and has large bending and torsion resistance, which can greatly reduce the structural weight and save steel.Characteristics and application h austenitic stainless heat strength steel has good corrosion resistance, welding performance and heat strength performance. h stainless steel is used for large boiler superheater, reheater, steam pipeline and petrochemical heat exchanger pipe fittings.Low temperature embrittlement of stainless steel pipe --- in low temperature environment, the deformation energy is small. In low temperature environment the phenomenon of reduced elongation and area shrinkage is called low temperature embrittlement. It is mostly produced on the body centered cubic structure of ferrite series.Range,Pipeline direct drinking water has developed rapidly. With the development of national economy, pipeline direct drinking water has developed rapidly in domestic cities such as Beijing, Shenzhen, Shanghai and Chongqing, and economically developed medium-sized cities have also actively planned to catch up. In direct drinking water,Charlotte-amariaX5crni18-10 stainless steel plate, stainless steel pipe system is undoubtedly second to none. At present, domestic high-grade hotels and public places have been equipped or are equipped with direct drinking water pipes.Production mode stainless steel pipe can be divided into seamless pipe and welded pipe according to the production mode. Seamless steel pipe can be divided into hot-rolled pipe, cold-rolled pipe, cold drawn pipe and pipe. Cold drawing and cold rolling are the secondary processing of steel pipe; Welded pipe is divided into straight seam welded pipe and spiral welded pipe.Model & mdash; other properties are similar except that the risk of weld corrosion is reduced due to the addition of titanium.

Model & mdash; Except that the risk of weld corrosion of the material is reduced due to the addition of titanium, stainless steel pipe, series stainless steel pipe & mdash; Ferritic and martensitic stainless steel model & mdash; Good heat resistance, weak corrosion resistance, % Cr, % Ni.Recommendation and consultation, stainless steel pipe fittings generally adopt the same vertical, vertical bending or arc continuous caster as carbon steel. The refined molten steel is poured into the ladle, the ladle to be poured is transferred above the tundish mouth through the rotary table, and then the molten steel is tundish through the long nozzle. The molten steel in tundish enters the mold through the submerged nozzle for forming, condensation and continuous downward movement.The length of tungsten electrode protruding from the gas nozzle is preferably ~ mm. In places with poor shielding such as fillet welding, it is ~ mm, and in places with deep groove, it is ~ mm. The distance from the nozzle to the working is generally no more than mm.W = (outer diameter wall thickness) & times; wall thickness & times; . = KGM (weight per meter).Charlotte-amaria,Stainless steel seamless steel pipe for fluid transportation (instead of gbt- instead of gbt- instead of gb-)Formula for hydraulic test pressure of stainless steel welded pipe for weight calculation fluid (gbt-): where: P - test pressure, MPa; R - stress, taking yield point of %, MPa; s - nominal wall thickness of steel pipe, mm; D - Nominal outer diameter of steel pipe, mm.When the addition of chromium reaches % the atmospheric corrosion resistance of steel increases significantly, but when the chromium content is higher, although the corrosion resistance can still be improved, it is not obvious. The reason is that when alloying steel with chromium, the type of surface oxide is changed to be similar to that formed on pure chromium metal. This tightly adhered chromium rich oxide protects the surface from further oxidation. This oxide layer is very thin. Through it, you can see the natural luster of the steel surface, which makes the stainless steel have a unique surface. Moreover, if the surface layer is damaged, the steel surface will react with the atmosphere to repair itself, re form this passive film and continue its protective effect.