Compared with other welding technologies, the main advantages of laser welding are as follows: High speed, large depth and small deformation. It can be welded at room temperature or under special conditions, and the welding equipment is simple. For example, when a laser passes through an electromagnetic field, the beam will not shift; the laser can be welded in vacuum, air or some gas environment, and can be welded through glass or materials transparent to the beam. It can be used to weld refractory materials such as titanium, quartz, etc. and to weld dissimilar materials with good results. After laser focusing, the power density is high. When high power devices are welded, the aspect ratio can reach 5:1, and the maximum can reach 10:1. It can be used for micro welding. It can be used in the assembly and welding of micro and small workpieces in mass automatic production.
It can be used to weld the inaccessible parts, and it has great flexibility to carry out non-contact long-distance welding. Especially in recent years, optical fiber transmission technology has been used in YAG laser processing technology, which makes laser welding technology more widely promoted and applied.