1. What is the reason for cracking in welding?

Question

Accepted Answer

Cracking in welding can occur due to various reasons such as improper welding technique, high stress, and material defects.

Improper welding technique such as using too much heat or not using enough filler material
High stress on the welded joint due to external forces or thermal expansion/contraction
Material defects such as impurities or inclusions in the base metal
Inadequate preheating or post-weld heat treatment
Incompatible welding materials or dissimilar metals
Lack of proper joint preparation or fit-up
Inadequate shielding gas or flux
Excessive moisture or oil contamination
Inadequate cleaning of the base metal
Inadequate inspection or quality control measures

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