![]() The crystal crack is related to the non-uniformity of the composition in the macro region of the weld. ![]() ![]() There are three kinds of cracks produced in the welding process of laser welding machine: product crack, liquefaction crack and reheat like crack. In the process of rapid metallurgical solidification, there will inevitably be uneven component distribution and hardened structure with low crack resistance, which constitutes the metallurgical factors promoting crack initiation. Laser welding is the synthesis of a series of unbalanced processes. The unbalanced rapid heating and rapid cooling of laser welding makes the whole joint in a complex stress state, which constitutes the mechanical factor of joint cracking So how does the laser welding machine produce welding cracks? Metallurgical factors The effect of this new welding technology is very good, but if it is not operated properly, it will also cause hot cracks or cold cracks. The working principle of bending sheet metal
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