Scattering Defect
Scattered defects are irregular, minor irregularities in the weld metal. They result from unstable process parameters and can compromise integrity.
Physical-Chemical Mechanism
Scattered defects arise from uncontrolled variations in the welding process chain. These can be caused by fluctuations in voltage, temperature, or gas flow. The irregularities lead to local deviations in the structure and properties of the metal.
Metallurgical Relevance & Welding Risks
Scattered defects can lead to local failure, cracks, or breakage. They reduce the toughness and reliability of the weld. In critical applications, this can cause safety issues.
Workshop Practice & Actions
To minimize scattered defects, control process parameters precisely. Keep voltage and temperature constant, optimize gas flow, and use high-quality materials. If scattered defects are detected, carefully check all welding parameters and adjust them.