Laser welding machine is a high-precision, high-speed welding equipment, which has been widely used in many fields. Copper, as an excellent conductive and thermal conductive material, is often used in electronics, electricity, communications, automobiles and other fields. However, there are some difficulties in laser welding copper materials, such as the influence of physical properties, chemical reactions and process requirements. Let's take a look at the problems and solutions for laser welding copper metal.

Problems:

1. Physical properties

Copper is a material with high thermal conductivity and high reflectivity, which makes it easy for laser welding machines to have problems such as rapid heat conduction and difficulty in forming a molten pool when welding copper materials. In addition, copper has a large thermal expansion coefficient, which is prone to deformation and cracking during welding.

2. Chemical reaction

Copper easily reacts with oxygen in the air at high temperatures to generate copper oxide, which reduces the quality and stability of welding. In addition, copper has a high melting point and requires a higher energy density during welding, which also increases the difficulty of welding.

3. Process requirements

The welding process of the laser welding machine needs to be adjusted according to factors such as material type, thickness, welding speed, and power. For copper materials, due to their physical and chemical properties, higher laser power and faster welding speed are required, and measures need to be taken to prevent problems such as oxidation and deformation.

Solution:

1. Material selection

In order to improve the effect of laser welding machines when welding copper materials, you can choose to add alloy elements or use methods such as plating to change the physical and chemical properties of copper materials. For example, adding alloy elements can lower the melting point of copper and improve its oxidation resistance; using plating can enhance the thermal conductivity and stability of copper materials.

2. Process optimization

According to the physical and chemical properties of copper materials, the following measures can be taken to optimize the welding process:

(1) Use inert gas protection measures to prevent copper materials from contacting oxygen and improve welding quality and stability;

(2) Use anti-deformation technology to offset deformation during welding by presetting the anti-deformation amount;

(3) Control welding speed and power to maintain the stability of the molten pool and welding quality.

3. Equipment upgrade

For problems with laser welding of copper metal, more advanced laser welding equipment, such as semiconductor lasers, composite lasers, etc., can be used to improve welding efficiency and stability. In addition, auxiliary equipment such as automation systems and visual tracking can be equipped to improve welding accuracy and quality. Improve product yield and reduce scrap rate.

The above are the problems and solutions of laser welding machine welding copper metal. Laser welding machine has difficulties in physical properties, chemical reactions and process requirements when welding copper materials. In order to solve these problems, measures such as material selection, process optimization and equipment upgrade can be taken, which have significant effects in improving welding quality and efficiency. With the continuous development of science and technology, laser welding technology will be more mature and efficient in the future, bringing more possibilities for laser welding of copper materials.