Issues covered in welding procedure qualification
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When welding base metal of the same category using welding material of the same category but changing the grade of the welding material, is it necessary to conduct a new welding procedure qualification?
It’s not necessary. Premise: The components are identical.
Let me give you a specific example to help analyze it:)
It depends on what you are welding. If there are changes in the important alloying elements of the deposited metal, or if impact testing is required, corresponding considerations must be taken. All of this is generally specified in the evaluation criteria. If only the grade changes while the model remains the same, it is usually not necessary to conduct a new evaluation; simply updating the documentation is sufficient
The welding material just has a different brand; the model remains the same, as long as it meets the required standards
Only specific problems can be analyzed specifically. . For your generalization question, 2 answers are possible. . . Yes, no. .