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Chisel test limitations on resistance spot welding quality analises 1

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jcastillo

Automotive
Feb 20, 2002
5
Peel test should be acceptable for spot welding analyses, but I would like to know the test limitations. Burn spot could analise on peel test? How coating material affect chisel tests? How I can get some literature?
 
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Jcastillo
Chisel testing of spot welds are an acceptable qualitative method of assessing weld fusion. You have the option of pulling a nugget which provides a way of measuring spot weld nugget diameter or just stressing the joint to ensure the spot doesnt separate. After assessing the joint you can bang the joint back together with a few taps from a hammer.

Provided spot welder current is turned up to burn through the coating, satisfactory spot welds can be achieved on coated steel panels similar to that on cold rolled steel panels. If you want complete non destructive testing of your spot welds look at one of the range of ultrasonic testers.
 
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