Welding defect
Weld defects are unacceptable deviations in weld quality, such as cracks, porosity, or lack of fusion, that reduce load-bearing capacity. Permissibility per ISO 5817.
Physico-Chemical Mechanism of Action
Welding defects arise from inadequate welding processes or wrong parameters. For example, excessive temperature differences can cause porosity, while too short cooling times can produce cracks.
Metallurgical Relevance & Risks in Welding
Welding defects like cracks or porosity reduce the load-bearing capacity of the joint. They can lead to fractures, leaks, or other mechanical problems, making the whole component unsafe.
Workshop Practice & Action Instructions
To avoid welding defects, the welding parameters must be followed precisely. This includes the correct temperature, proper cooling time, and careful preparation of the workpieces. If there is any suspicion, check the weld profile and the microstructure.