Both laser cutting machines and laser welding machines rely on lasers to complete processing tasks, but the functionality of the two is very different. So what’s the difference between the two? The following high-energy lasers will introduce to you separately!

　　First of all, we need to understand how the laser cutting machine completes the function of cutting.

　　The laser cutting machine is a horizontal laser beam emitted by a laser that is transformed into a vertically downward laser beam by a 45° total reflection mirror, and then gathered by a lens to form a very small spot at the focal point, where the laser beam will focus The power density is as high as 10^6~10^9W/cm^2. The workpiece at its focal point is irradiated by a high-power-density laser spot, which will generate a local high temperature of over 10,000°C, vaporizing the workpiece instantly, and then cooperate with the auxiliary cutting gas to blow away the vaporized metal, thereby cutting the workpiece through A small hole is formed, and with the movement of the CNC machine tool, countless small holes are connected to form the shape to be cut. Because the frequency of laser cutting is very high, the joints of each small hole are very smooth, and the cut products have a high finish.

　　However, the laser welding machine is a new type of welding method, mainly for the welding of thin-walled materials and fine parts, it can realize spot welding, butt welding, lap welding, sealing welding, etc. Small affected area, small deformation, fast welding speed, flat and beautiful weld seam, no or only simple treatment after welding, high quality weld seam, no porosity, accurate control, small focused light spot, high positioning accuracy, easy to complete automation. It uses high-energy laser pulses to partially heat the material in a small area, and the energy of the laser radiation diffuses to the inside of the material through heat conduction, melting the material to form a specific molten pool.

　　I believe that through the above introduction, everyone will have a certain understanding of the two kinds of laser equipment ! In fact, the principle of the laser welding machine is similar to that of cutting, but the purpose achieved is the opposite. The main secret lies in the power of the laser. According to experience, the two can actually complete symbiosis on the same machine, but the programming is slightly different, and the laser power used is different.