Regarding intergranular corrosion
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If the drawings require that weld joints be tested for intergranular corrosion, does that mean that a weld procedure qualification must also include testing for intergranular corrosion? Or is a weld evaluation not necessary, as long as the product is manufactured?
Discussion on the preparation of intergranular corrosion specimens: https://bbs.hcbbs.com/thread-1353922-1-1.html (Source: Haichuan Chemical Industry Forum Website) Please refer to it
The cost of carrying out intergranular corrosion welding evaluations along with a set of product test plates is not low.
Formulating the welding process, conducting trial welding, testing, and evaluation should be a basic workflow. The intergranular corrosion test should be completed prior to the welding procedure qualification
Since the drawings specify that the welded joints must undergo intergranular corrosion testing, the weld evaluation should include this test; otherwise, the weld evaluation loses its meaning. Intergranular corrosion is a destructive test. I don’t understand what the person mentioned meant by \"producing a product\" – conducting an intergranular corrosion test on a product would be counterproductive, right?
Weld evaluation is necessary, as required by the drawings. Intergranular corrosion tests must be conducted; once they are carried out, their results should be reflected in the weld evaluation. Please give me your guidance