Heat treatment of cold-formed compressed members after over-deformation?
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The equipment requires overall heat treatment. One of the tube sections has a diameter of DN1000, a plate thickness of 60 mm, and is made of material Q345R (normalized). Calculations show that the deformation rate during rolling exceeds 5%. I would like to ask whether stress-relief heat treatment or normalized heat treatment should be carried out after the tube section is rolled into shape If the device does not require heat treatment, what kind of heat treatment should be applied to this type of rolled shape with such high super-deformation rates?
GB/T150 specifies heat treatment to restore performance. . That is, AC3+30~50°. . .
This post was last edited by zjq1962 on 2020-12-17 08:38; it relates to heat treatment for restoring material properties, primarily aimed at eliminating cold work hardening. Annealing or normalizing can be performed, and heat treatment specimens of the base material need to be prepared. Post-weld heat treatment is also required after welding. The two heat treatments can be carried out together.
Thank you so much for helping to answer, I’m extremely grateful!