Welding issues with post-weld heat treatment equipment
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There is a piece of equipment on site; the material used is 14Cr1MoR with a thickness of 130 mm. It has already been delivered to the site. The manufacturer failed to weld the pre-welded parts. I would like to ask: what factors need to be taken into account in terms of welding procedures and heat treatment when welding such equipment’s pre-welded parts?
All of them adopt a double-sided fully penetrative welding structure; it is required that after one side has been welded, the weld root on the other side be removed. Only after passing the magnetic particle inspection is welding on the other side carried out, followed by inspection of the welds, and heat treatment is performed after welding.
Locally weld the pre-welded parts, apply preheating and post-heating, and carry out localized stress-relief heat treatment.
Perform an MT inspection after welding, and it is advisable to conduct another MT inspection after heat treatment.