Introduction of three common sheet metal laser processing technologies

In the development of sheet metal processing, laser processing technology of sheet metal parts is rising day by day. The common laser processing technologies of sheet metal include laser cutting technology, laser drilling technology and laser welding technology; the following focuses on Guangzhou sheet metal processing small series, which will give you a detailed introduction to three common sheet metal laser processing technologies.

1. Laser cutting technology

Laser cutting machine has the characteristics of high flexibility, fast cutting speed, high production power and short production cycle, which has won the favor of customers in the market. The skill has a long life. The foreign plate with thickness more than 2mm is mostly laser cutting machine. Many foreign experts believe that the next 30-40 years will be the golden period of laser processing technology. Laser cutting has the advantages of good cutting effect, high cutting precision and simple operation. It has the advantages of faster cutting speed, narrow cutting seam, high flatness, small deformation, small thermal impact area and high power than mechanical cutting. Today, cutting is not only limited to 2D plane cutting, but also 3D cutting.

Generally, it is recommended to use laser cutting machine to cut carbon steel plate within 12mm and stainless steel plate within 10 mm. Laser cutting machine has no cutting force and deformation during the process. No matter simple parts or disordered parts, they can be cut by laser once forming, with high precision and high economic benefits.

2. Laser drilling technology

Laser drilling is not only suitable for large diameter round holes, but also for small diameter round holes. In some famous laser drilling enterprises, small hole processing with diameter less than 0.2mm and depth of 7mm can be completed.

The basic structure of laser drilling machine includes laser, foreman, cooling system, numerical control equipment and control panel. The foreman focused the laser beam on the position of the hole to be processed on the data. After selecting the processing parameters, the holes needed are processed by using the laser pulse.

3. Laser welding technology

Laser welding is a high-efficiency and precise welding method which uses high energy density laser beam as heat source. The welding parameters and the heat transfer rate of the welding pool, namely the external heat transfer of the workpiece and the heat transfer process of the laser beam, are the main parameters of the welding process.

Laser welding can help us to complete the welding of castings such as equipment. A large number of laser welding makes the weight of the body gradually reduce, and has high quality and safety functions. In addition, it has become the domestic auto body processing skill while using the cooperative sheet metal processing skills.

The mechanism of laser welding is similar to that of laser welding. The transpiration of data and the formation of small holes are observed under the irradiation of high power density laser. The steam filled hole is like a blackbody, absorbing almost all the energy of the incident beam. The equilibrium temperature of cavity reaches 25000 degrees. Heat is transferred from the outer wall of the high temperature cavity, which melts the metal around the cavity.