Failure Analysis of Welded Joints
Flaw analysis on welded joints involves a systematic investigation of cracks, lack of fusion, and inadequate parameters to identify the causes.
Physicochemical Mechanism of Action
Failure analysis of welded joints aims to identify the causes of failures. This can be done by checking the materials, the welding process, and the environmental conditions.
Metallurgical Relevance & Risks in Welding
Incorrect parameters or insufficient control during welding can lead to cracks, Lack of fusion, or insufficient strength. A detailed failure analysis is necessary to identify the causes of these problems and take corrective actions.
Workshop Practice & Instructions
To perform a successful failure analysis, the following steps should be taken:
1. Visual Inspection: Inspect the weld for visible cracks or deformations.
2. Metallurgical Testing: Use methods such as metal cutting and microscopy to analyze the microstructure.
3. Parameter Check: Verify the welding parameters (e.g., voltage, temperature) for correctness.
4. Material Handling: Ensure the material is correctly treated and free of contaminants.