Factors that cause cracking in stainless steel after welding include improper welding process, influence of material properties, improper preparation and handling, and stress changes during operation.

Stainless steel itself contains elements such as chromium and nickel, has excellent corrosion resistance and high temperature resistance, and is not easy to rust and deform during use. However, if the material quality is poor or impurities are mixed in, it will cause cracking during welding.

From the perspective of welding process, inappropriate welding parameters, uneven heating speed, and lack of proper cooling conditions may all lead to cracking. Stress caused by thermal expansion and contraction during stainless steel welding is also one of the main causes of cracking. The heat capacity and thermal conductivity of the material will also affect the stress of welding. If the temperature and stress distribution are not properly controlled during welding, welding cracking will occur.

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