(1) serious stress corrosion environment. In material selection, it is better to use class I or class II austenitic stainless steel and cool it slowly after heating at 900-1100 ° C, which can eliminate stress completely. If class III austenitic stainless steel is used, it should be heated at the solid solution temperature and cooled quickly. At this time, the original stress can be eliminated, but some new stress will be generated due to the use of quench. Therefore, a low temperature stress relief treatment can be added.
(2) intergranular corrosion environment. It can be heated to the solid solution temperature, the class I and class II austenitic stainless steels can be cooled slowly, and the class III austenitic stainless steels must be cooled quickly. If there is possibility of sensitization and intergranular corrosion in the production of workpieces, class I austenitic stainless steel shall be used, which shall be cooled rapidly after being heated to the solid solution temperature, or class II austenitic stainless steel which shall be cooled slowly after being heated to the stabilization temperature.
Product Name: long radius elbow
