Solution treatment of stainless steel pipe

The use of stainless steel pipes is now more and more widely used. Because of its good corrosion resistance, it has played a vital role in engineering construction. During the production process, we need to perform solid solution treatment on stainless steel pipes. The main purpose is to obtain certain Martensite increases the hardness of the product. Let's look at the solution treatment of stainless steel pipes below: (1) Intermediate aging method heats to (760±15) ℃ after solution treatment, and keeps it for 90 min. Because Cr23C6 carbide precipitates from austenite, it reduces the content of carbon and alloying elements in the austenitic 904L stainless steel tube , The Ms point is raised to 70℃ and then cooled to room temperature to obtain martensite+αferrite+retained austenite structure. The retained austenite is decomposed after aging at 510℃.

 (2) After high temperature adjustment and cryogenic treatment, heat to 950℃ and hold for 90min after solid solution. Because the Ms point is raised, a small amount of martensite can be obtained by cooling to room temperature; after that, it can be obtained by cold treatment at -70℃ and holding for 8 hours. The amount of martensite. 　　

 (3) After the cold deformation method and solution treatment, it is cold deformed at room temperature. The amount of martensite formed in the 904L seamless tube during cold deformation is related to the deformation and the composition of the 904L stainless steel tube. 　　

 

The above three methods are commonly used methods of solid solution treatment of stainless steel pipes. Hope to help everyone.

HCADTO Stainless Steel Co., Ltd. the Stainless Steel Division of ADTO GROUP, specializes in manufacturing stainless steel pipes, stainless steel angle bar, flat bar, round bar, square bar, hexagonal bar and channel bar in various grades and sizes. Our years of production experience and manufacturing facilities will ensure the good quality and competitive duration of our products.