08 Dec,2023

Tip:Why is the laser welding machine so difficult to weld copper?


Tip:Why is the laser welding machine so difficult to weld copper?

Laser welding machine has the advantages of high energy density, small deformation, narrow heat affected zone, high welding speed, easy to achieve automatic control, no follow-up processing, in recent years is becoming an important means of metal material processing and manufacturing, more and more widely used in automotive, aerospace, shipbuilding, hardware, medical equipment, batteries, sensors, home and other fields. The following take you to understand why the laser welding machine is so difficult to weld copper, there are two main reasons:
1. The reflectivity of copper products is high, and the laser is difficult to gather and heat the copper.
2. The thermal conductivity of copper products is very large, the heat input is large, and the laser heating is more concentrated, which can not effectively make up for the loss of copper heat dissipation.
At present, the commonly used welding processes are arc welding, resistance welding, brazing, electron beam welding and so on. Arc welding is a widely used welding method, including hand arc welding, submerged arc welding, tungsten gas arc welding, plasma arc welding, metal gas arc welding and so on. However, the above various welding methods have their own shortcomings, such as space limitations, difficult to operate for fine devices, etc., and laser welding not only does not have the above shortcomings, but also can carry out accurate energy control, and can realize the welding of fine micro devices. And it can be applied to many metals, especially to solve the welding of some difficult metals and dissimilar metals.

Advantages of laser welding machine welding copper:
1. The traditional welding method, the heating surface is relatively large, the welding part is easy to cause deformation because of the action of heat, and the welding surface is not smooth enough. The heating surface of the copper laser welding machine is very small, because the size of the welding point can be automatically adjusted.
2. The welding method of the copper laser welding machine is to weld the surface of the body through the high temperature emitted by the laser beam, without the need for contact on the appliance, so that the loss of parts can be reduced, thereby reducing the input, and will not produce electrode pollution.
3. Copper laser welding can be operated by computer, so that it is more accurate and the welding effect is good. At the same time, it can avoid the interference of the magnetic field, because it is not like arc welding, etc., the interference of the magnetic field can not complete the task well. Even welding between different metals can be done by laser welding. Laser welding of copper is simple, accurate and adaptable.