Is solution treatment generally performed on austenitic stainless steel after cold working?
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After cold working of austenitic stainless steels, such as spun heads, expansion joints, and U-shaped heat exchange tubes, is solution treatment generally carried out or required by standards after such cold working?
It depends on the degree of deformation and the operating environment. According to GB150 standards, if the degree of deformation of austenitic stainless steel exceeds 15%, solution treatment is required. HG20584 specifies the relationship between the austenite deformation rate and hydrogen sulfide partial pressure, etc
Not necessarily, but generally, when higher standards are required for the end caps, if the cylinder is made of 304, the material for the expansion joints on the end caps will be 316L
The deformation rate is difficult to define. Decide whether to proceed after processing?
It’s relatively easy to manufacture heads and cylinders from sheet metal, but it’s difficult to determine the degree of deformation when bending tubes.