Laser welding applications can cover all thermoplastics

Laser welding machine is a machine used for laser material processing. It can be seen in many mechanical processing plants. It mainly uses high-energy laser pulses to heat the material part. The energy of laser radiation is dispersed into the material through heat conduction, and the material is melted to form a special molten pool to achieve the purpose of welding.

Laser welding has been widely used in the electronics industry, especially in the microelectronics industry. Because laser welding has a small heat-affected zone, rapid heating concentration, and low thermal stress, it shows unique advantages in the packaging of integrated circuits and semiconductor device shells.

In general, stainless steel welding is easier to obtain high-quality joints than conventional welding. Due to the high welding speed and small heat-affected zone of laser welding, the overheating phenomenon and the adverse effects of large linear expansion coefficient during stainless steel welding are reduced, and the weld has no defects such as pores and inclusions. Compared with carbon steel, stainless steel is easier to obtain deep-melting narrow welds due to its low thermal conductivity, high energy absorption rate and melting power.

Almost all thermoplastics and thermoplastic elastomers can be welded with laser technology. Commonly used welding materials include PP, PS, PC, ABS, polyamide, PMMA, polyoxymethylene, PET and PBT.

Laser welding technology has entered the field of powder metallurgy material processing with its unique advantages, opening up new prospects for the application of powder metallurgy materials. For example, brazing, which is commonly used in the connection of powder metallurgy materials, is used to weld diamond. Due to its low bonding strength and wide heat-affected zone, it cannot adapt to high temperatures and high strength requirements, which causes the brazing material to melt and fall off. Laser welding can improve welding strength and high temperature resistance.