Is the weldable primer an important factor in the evaluation of welding processes?
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Is the weldable primer an important factor in the evaluation of welding processes? I hope to get some advice. Generally speaking, it should be an important factor, as the material can have a significant impact on the weld formation during welding.
No, it only serves to protect the groove; it does not affect the properties of the weld
Hello! I hope to find provisions in the relevant regulations; are there any specific rules? I looked up the relevant JB regulations but found no such provisions.
If the weldable primer is polished off, there will be no problem. In the case of problems, the weldable primer can be used without grinding and welding can be carried out directly; however, PQR does not have a corresponding weldable primer. Can it still cover actual welding areas that have been coated with a weldable primer?
An email has been sent to the General Administration of Quality Supervision, Inspection and Quarantine; I’m not sure if there will be any response. I’ll check again after the holiday, and if there’s any update I’ll let everyone know； At the same time, I will contact the drafters of the standards in the hope of getting some guidance.
Although it is a weldable primer, it still has a certain impact on the chemical composition of the weld, while having little effect on its mechanical properties. It’s generally better to grind it off.