Why do stainless steel flanges crack after welding?
Stainless steel flanges often use the welding method, and stainless welding is quite special. Many ss flanges will have welding defects after welding, the most obvious one is cracking. Once discovered, the problem must be investigated. We use When the hardness tester was tested, it was found that the Leeb hardness of the cracked ss flanges was about 80 higher than that of the non-cracked stainless flange. So why is this?
This requires the use of knowledge about metal heat treatment. When welding, when the welding current is relatively large, the metal structure in the affected heat-affected zone reaches the crystal phase transition temperature, and then the cooling rate is relatively fast, so that The ferrite structure is generated inside, and a process similar to normalizing occurs, which causes the flange to become more prone to hardening, leading to cracking of the pipe flanges.
GNEE Steel has focused on the research and production of stainless steel products for many years. It has rich experience and mature production technology in the field of stainless steel products, and provides a variety of products. You can find what you want here.
