The Difference And Advantages Of Laser Welding Machine And Cold Welding Machine
In the welding equipment, in addition to the laser welding machine that everyone is familiar with at present, there is another welding equipment, that is, the cold welding machine. The cold welding machine is called ESD in the world. It clads the special welding wire to the damaged part of the workpiece through the high thermal energy generated by the instantaneous discharge of the micro-electricity, and fuses it firmly with the original base material. . So what is the difference between a cold welder and a laser welder?
1. The difference in principle:
The principle of the multi-function cold welding machine is to use the charging capacitor to discharge in a period of 10-3 to 10-1 seconds and an ultra-short time of 10-6 to 10-5 seconds. The contact part between the electrode material and the workpiece will be heated to 8000°C ~ 10000°C in an instant, and the molten metal in the plasma state transitions to the surface of the workpiece in a metallurgical manner. The cold welding machine mainly has the functions of depositing, sealing, filling and other defects on the surface of metal workpieces such as wear, scratches, pinholes, cracks, defect deformation, hardness reduction, trachoma, damage and other defects.
The laser welding machine uses high-energy laser pulses to locally heat the material in a small area. The energy of the laser radiation diffuses into the interior of the material through heat conduction, and the material is melted to form a specific molten pool to achieve the purpose of welding. According to its working mode Divided into laser mold welding machine, automatic laser welding machine, laser spot welding machine, optical fiber transmission laser welding machine.
2. The difference between application functions:
The cold welding machine mainly has the functions of depositing, sealing, filling and other defects on the surface of metal workpieces such as wear, scratches, pinholes, cracks, defect deformation, hardness reduction, trachoma, damage and other defects.
Laser welding machine
The laser welding machine is mainly aimed at the welding of thin-walled materials and precision parts. It can realize spot welding, butt welding, stitch welding, sealing welding, etc. After welding, the substrate will not be deformed, annealed, undercut or residual stress, and its metal will not be changed. The tissue state, the repairing precision is high, the coating thickness is from a few microns to a few millimeters, and only needs to be polished.
