Introduction of the advantages of laser welding technology compared with traditional welding methods
Release time:
2022-07-26
【Summary Description】 Compared with other traditional welding techniques, the main advantages of laser welding are: 1. Fast 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, a laser passes through an electromagnetic field and the beam does 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. 3, can be welded refractory materials such as titanium, quartz, etc., and can be welded to the opposite material, the effect is good. 4. 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. 5, can be micro welding. The laser beam can be focused to obtain a small spot, and can be accurately positioned, can be used in mass automation production of micro, small workpiece group welding. 6, can be welded to the inaccessible parts, the implementation of non-contact distance welding, with great flexibility. Especially in recent years, optical fiber transmission technology has been used in YAG laser processing technology, so that laser welding technology has been more widely promoted and applied. 7. The laser beam is easy to realize the beam splitting according to time and space, and can carry out multi-beam processing and multi-station processing at the same time, which provides conditions for more precise welding. However, laser welding also has some limitations: 1. The assembly precision of the weldment is required to be high, and the position of the beam on the workpiece cannot be significantly offset. This is due to the fact that the laser focused light spot is small in size and the weld is narrow, which is filled with metal materials. If the workpiece assembly accuracy or beam positioning accuracy can not meet the requirements, it is easy to cause welding defects. The cost of lasers and related systems is high, and the one-time investment is large. laser welding technology
Compared with other traditional welding techniques, the main advantages of laser welding are:
1. Fast 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, a laser passes through an electromagnetic field and the beam does 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.
3, can be welded refractory materials such as titanium, quartz, etc., and can be welded to the opposite material, the effect is good.
4. 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.
5, can be micro welding. The laser beam can be focused to obtain a small spot, and can be accurately positioned, can be used in mass automation production of micro, small workpiece group welding.
6, can be welded to the inaccessible parts, the implementation of non-contact distance welding, with great flexibility. Especially in recent years, optical fiber transmission technology has been used in YAG laser processing technology, so that laser welding technology has been more widely promoted and applied.
7. The laser beam is easy to realize the beam splitting according to time and space, and can carry out multi-beam processing and multi-station processing at the same time, which provides conditions for more precise welding.
But,Laser welding also has some limitations.：
1. The assembly precision of the weldment is required to be high, and the position of the beam on the workpiece cannot be significantly offset. This is due to the fact that the laser focused light spot is small in size and the weld is narrow, which is filled with metal materials. If the workpiece assembly accuracy or beam positioning accuracy can not meet the requirements, it is easy to cause welding defects.
The cost of lasers and related systems is high, and the one-time investment is large. laser welding technology
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