Laser welding is the use of high-energy laser pulse to the material in a small area of local heating, laser radiation energy through the heat conduction to the internal diffusion of the material, the material after melting to form a specific molten pool. It is a new type of welding method, mainly for the welding of thin-wall materials and precision parts, can achieve spot welding, butt welding, overlap welding, sealing welding, etc., depth to width ratio, small weld width, small heat-affected zone, small deformation, fast welding speed, smooth weld, beautiful, no processing or simple processing after welding, high quality weld, no porosity, accurate control, small focusing spot, High positioning accuracy, easy to achieve automation.

Optical welding machine is also known as laser welding machine, energy negative feedback laser welding machine, laser welding machine, laser welding machine, laser cold welding machine, laser argon welding machine, laser welding equipment. According to its working mode, it can be divided into laser mold welding machine (manual laser welding equipment), automatic laser welding machine, jewelry laser welding machine, laser spot welding machine, optical fiber transmission laser welding machine, galvanometer welding machine, handheld welding machine, etc., special laser welding equipment has sensor welding machine, silicon steel sheet laser welding equipment, keyboard laser welding equipment.