Welding Procedure Qualification Test
The procedure qualification for welding procedure specifications verifies the technological suitability of a welded joint through destructive testing of specimens.
Physical-chemical mechanism of action
Procedure qualification for welding specifications involves various testing methods such as destructive mechanical testing to verify the properties of the weld. These methods indicate whether the welded joint meets the specified technical requirements.
Metallurgical relevance & risks in welding
Wrong or incomplete welding specs can lead to defective joints that fail under mechanical load. Procedure qualification ensures the weld is stable and sound.
Workshop practice & instructions
To successfully conduct a procedure qualification, the following steps must be taken:
1. Sampling: Take samples from the weld at relevant locations.
2. Test methods: Apply various destructive tests such as bend testing or pressure testing.
3. Evaluation: Compare the test results with the specified requirements of the welding specs.
4. Documentation: Record all results and document the test processes.