Issues related to repair welding of flanges
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According to the standards, except that forgings made of 15CrMo material cannot be repaired by welding, forgings of other materials can be repaired in this way. In which stage of the manufacturing process do defects in forgings such as flanges generally get repaired? During a recent inspection at the factory, it was found that some areas of the forgings showed signs of grinding. What should be done in this situation?
Lift up. . . . . . . . .
This post was last edited by LIWEITA on 2015-6-8 at 08:44. First, check whether the area of the surface repairs exceeds the specified limits, then conduct an ultrasonic inspection to see if there are any defects inside. Treated with a defective control standard. Also, check the surface hardness again, and see if heat treatment was applied after repair.
You should first examine the factory quality certification documents for the forgings to see if there are any instructions regarding repairs; if so, those instructions and test results will be available, and if not—well, you know what to do! You can conduct spot checks.
Grinding marks do not indicate that a welding process has taken place. .
I agree with what was said on the 4th floor; if there are signs of grinding, it would be better to conduct some surface flaw detection or something