The cracking caused by the combined action of stress corrosion stress (mainly tensile stress) and corrosion of austenitic stainless steel is called stress corrosion cracking (SCC). Austenitic stainless steel is prone to stress corrosion in corrosive medium containing chloride ions. WhenThe reason why S stainless steel plate rusts is that there are dust containing other metal elements or attachments of dissimilar metal particles on the surface. In the air, the condensate between the attachments and stainless steel connects them into a micro battery, which causes electrochemical reaction and the protective film is damagedVodonga,The time is longer than the diffusion time of oxygen, about . seconds, which leads to that the oxygen content at the fatigue crack tip of the stainless steel pipe sample is always saturated when the low cycle fatigue test is carried out in the high-temperature air environment, and the excess oxygen can diffuse to the base again, the corrosion resistance decreases.Kuru,The cold rolled steel strip has good strength and yield ratio, and the hot rolled steel strip has good ductility and toughness.High frequency welding high frequency welding: with relatively high power supply, it can achieve high welding speed for steel pipes with different materials, outer diameter and wall thickness. Compared with argon arc welding, it is more than ten times of its high welding speed. Therefore, such frames can be recycled for secondary use. It can not only save costs, but also save resources. And the auto parts of some other parts are also made of stainless steel. Stainless steel has a great potential market in the whole automobile industry!

The slab solidified on the surface continues to be rapidly cooled through the secondary cooling section until the core becomes solid, and the whole continuous casting process of stainless steel pipe fittings is completed.Stainless steel is mainly used in the exhaust system, accounting for more than % of the total consumption of automotive stainless steel, and % is ferritic stainless steel. The exhaust gas produced by the automobile engine is discharged from the intake pipe, front pipe, hose, converter and central pipe. The commonly used steel types of exhaust system areThe removal technology of tritium remaining in the pipe wall was studied, and a set of tritium removal system was developedFocus on Development,It is an extension of ultra-thin stainless steel plate. It is mainly a narrow and long steel plate produced to meet the needs of industrialized production of various metal or mechanical products in different industrial sectors.The change of creep rate is shown in. When the temperature rises,Vodonga309S stainless steel pipe, the material maintains a low level of creep rate. Under the condition of ℃ and MPa, the S creep deformation rate does not increase, which shows little influence on the temperature and stress, and the creep performance is better under this condition. Compare this result with several other resultsStress relief treatment. Stress relief treatment is a heat treatment process to eliminate the residual stress of steel after cold working or welding. Generally, it is heated to ~ ℃ for tempering. For steels without stabilizing elements Ti and Nb the heating temperature shall not exceed ℃, so as to avoid precipitation of chromium carbide and intergranular precipitation

There is also a spectrometer detection method, which is a relatively simple and fast way.technical service,Therefore, the surface of stainless steel plate must be cleaned and maintained regularly to maintain its gorgeous surface and prolong its service life.The stainless steel plate can be cut with a thickness of mm and supports cutting A-type groove, V-type groove, Y-type groove, X-type groove and K-type groove. For example,Vodonga305 professional stainless steel pipe, for mm thick steel plate,VodongaStainless steel pipe, if the beveling machine is used, the beveling of one side takes about - minutes, which consumes a lot of time and labor costIt will react with the atmosphere to repair itself, re form this passive film and continue its protective effect.VodongaThe performance requirements of stainless steel plates are different, and several categories have gradually formed in the process of use. It can be divided into martensitic and stainless steel plate, ferritic stainless steel plate, austenitic stainless steel plate, stabilization treatment and stress relief treatment.