1, high speed, large depth, small deformation.
2, can be at room temperature or under special conditions for welding, welding equipment, simple device. For example, the laser beam will not be offset by the electromagnetic field, the laser can be applied in the vacuum, air and some gas environment, and can be welded by glass or transparent material.
3, can be welded refractory materials such as titanium, quartz, etc., and can apply to the opposite sex, the effect is good.
4, laser focusing, high power density, high power devices in the welding, the depth to width ratio of up to 5:1, up to 10:1.
5, can be micro welding. After focusing the laser beam can obtain a small spot, and can accurately positioning, can be applied to large quantities of automatic production of micro, small workpiece welding.
6, can be difficult to close the welding parts, the implementation of non contact distance welding, with great flexibility. Especially in recent years, in the YAG laser processing technology using the optical fiber transmission technology, so that laser welding technology has been more widely spread and application.
7, the laser beam is easy to realize the light beam by time and space, can carry on multi beam at the same time processing and multi station processing, provides the condition for the more precise welding.
However, there are some limitations in laser welding:
1, the requirements of high precision welding parts, and requires the beam position on the workpiece can not be significantly offset. It is because of the small size and narrow weld of the spot size after laser focusing. If the workpiece assembly precision or beam positioning accuracy is not up to the requirements, it is easy to cause welding defects.
2, the cost of the laser and related systems is higher, a one-time investment is larger.