Carburization during welding of stainless steel and carbon steel in jacketed vessels
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There is a jacketed vessel with an inner cylinder made of stainless steel 321, and the jacket is made of Q245R. Experts recommend (but it’s not mandatory) using gaskets when connecting the jacket to the stainless steel in order to prevent carbon penetration. Has anyone seen a jacketed vessel like this before? Should shims be used?
It’s not necessary; if high standards are required, the jacket can also be designed to be made of stainless steel
According to experts, can’t that composite panel be used then? For carburizing, it depends on the circumstances and the structure; a jacketed vessel like this has no problems.
What you say makes sense. There is no explicit provision for this; it can only be determined by referring to previous examples.
It depends on the conditions of use; if it is used in high-temperature environments, carbon migration must certainly be taken into consideration. In normal situations, as long as the welding control is proper, there will be no problems.