Restoration performance heat treatment
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May I ask if performance-restoring heat treatment can be carried out together with post-welding heat treatment? Is there any evidence?
The reason? The purposes and criteria for these two heat treatment methods are different.
Restoration performance heat treatment can replace post-weld heat treatment, but the reverse is not possible
Restoration performance heat treatment and post-weld heat treatment are two distinct processes that are generally not carried out together. Restoration performance heat treatment is aimed at improving the mechanical properties and microstructure of materials, and it is usually carried out during the material processing stage, such as annealing after cold working. Post-weld heat treatment is primarily aimed at eliminating the stresses generated by welding and improving the properties of the welded area, and it is usually carried out after welding is completed. The two heat treatment processes serve different purposes and employ different methods, but under certain special circumstances, they can be combined according to specific requirements. However, this requires a comprehensive analysis and evaluation of the materials, welds, and processes to ensure their rationality and effectiveness. The specific feasibility needs to be determined based on factors such as material type, welding method, and specific process conditions. Therefore, in practice, it is recommended to consult a professional materials engineer or welding engineer for a detailed assessment and guidance. .
See GB150-2011 Q&A and Examples, Question 4-14
The premise of the statement you cited is that it applies \"when there is no change in the heat treatment state of the material.\" However, many performance-restoring heat treatments are necessary because the heat treatment state of the material needs to be restored.