Compared with other welding technologies, laser welding has the following advantages:
1. Fast speed, large depth and small deformation.
2. It can weld refractory materials such as titanium, quartz, etc., and can weld heterogeneous materials with good results.
3. Micro welding is possible. The laser beam can obtain a small spot after being focused, and can be accurately positioned, which can be used in the assembly welding of micro and small workpieces that are mass-produced and automated.
4. It can be welded at room temperature or under special conditions, and the welding equipment is simple. For example, when the laser passes through the electromagnetic field, the beam will not shift; the laser can be welded in vacuum, air and certain gas environments, and can be welded through glass or materials that are transparent to the beam.
5. After the laser is focused, the power density is high. When welding high-power devices, the aspect ratio can reach 5:1, and the highest can reach 10:1.
6. The laser beam is easy to split the beam according to time and space, and can process multiple beams at the same time and multi-station processing.
7. It can weld hard-to-access parts and perform non-contact long-distance welding, which has great flexibility. Especially in recent years, the use of optical fiber transmission technology in YAG laser processing technology has made laser welding technology more widely promoted and applied.
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