Laser welding is one of the important parts of laser material processing. Laser welding is a kind of precision welding technology which uses high-energy laser beam as heat source. It mainly uses high-energy laser beam to heat the surface of the workpiece, and the heat diffuses from the surface of the material to the inside. By adjusting the parameters of the laser pulse, the corresponding material is melted to form a specific molten pool.
So, what are the advantages of laser welding machine in the field of sheet metal welding?
The advantages of laser welding machine in the field of sheet metal welding:
Stainless steel materials are widely used in the manufacture of various finished products, and the welding of stainless steel sheet has become an important process in the manufacturing process. However, due to the characteristics of sheet stainless steel, there are some difficulties in welding, which once became a welding problem in the field of sheet stainless steel.
There is a big problem in the traditional welding machining of stainless steel sheet. Because the thermal conductivity of stainless steel sheet is very small, which is only about one third of that of ordinary low carbon steel, and the degree of constraint is small, once the part is heated and cooled in the welding process, the uneven stress and strain will be formed, and the longitudinal contraction of weld will produce a certain pressure on the outer edge of stainless steel sheet, Once the pressure of the traditional welding machine is too high, it will cause the wavy deformation of the workpiece, which not only affects the beauty, but also affects the quality of the workpiece. In addition, there will be the problem of over burning and burn through.
The emergence of fiber laser welding machine can solve this problem well. Laser welding is to use high-energy laser pulse to heat the material locally in a small area. The energy of laser radiation guides the internal diffusion of the material through heat transfer, and melts the material to form a specific molten pool. It has the advantages of high ratio of welding depth to width, small weld width, small heat affected zone, small deformation, fast welding speed, smooth and beautiful weld, no treatment or simple treatment after welding, high weld quality, no porosity, accurate control, small focusing spot, high positioning accuracy, and easy automation. With many advantages, laser welding machine is gradually replacing the traditional thin plate welding market.
The above is the advantage analysis of laser welding machine in the field of sheet metal welding. Laser welding machine is widely used in dental denture processing, circuit board welding, splicing steel plate welding, sensor welding, battery sealing cover welding and so on.