Views: 1 Author: DURMAPRESS Publish Time: 2021-11-05 Origin: DURMAPRESS
Laser welding machine portable, also known as laser welding machine, laser welding machine, laser material processing machine. Laser welding uses high energy laser pulse to heat the material locally in a small area. The energy of laser radiation diffuses to the interior of the material through heat conduction and melts the material to form a specific molten pool. What are the welding methods of laser welding machine?
It is used to weld thin metal parts by clamping the welder between two electrodes and applying a large current to melt the surface where the electrodes meet, i.e. by heating the workpiece resistance. Easy deformation of workpiece, resistance welding through joint welded on both sides, and laser welding from the single side, only for resistance welding electrode should be regular maintenance to remove oxides and adhesion of the metal from the workpiece, the laser welding of thin metal lap joint does not contact with the workpiece, moreover beam can also enter the conventional welding and welding area, welding speed is fast.
Argon arc welding
Non-consuming electrodes and protective gases are commonly used to weld thin workpieces, but the welding speed is slow, and the heat input is much larger than laser welding, which is easy to produce deformation.
Plasma arc welding
It is similar to argon arc, but the torch produces a compression arc to improve the arc temperature and energy density. It is faster and deeper than argon arc welding, but inferior to laser welding.
4. Electron beam welding
It relies on a beam of accelerated high-energy density electron flow to impact the workpiece, which generates huge heat in the surface of the workpiece, forming a "small hole" effect, so as to implement deep fusion welding. The main disadvantages of electron beam welding are that it needs high vacuum environment to prevent electron scattering, the equipment is complex, the size and shape of welding parts are limited by the vacuum chamber, and the assembly quality of welding parts is strictly required. Non-vacuum electron beam welding can also be implemented, but the focusing effect is not good due to electron scattering.
Electron beam welding also has magnetic deviation and X-ray problems. Because electrons are charged, they will be affected by magnetic field deflection. Therefore, it is required that electron beam welder parts be demagnetized before welding. X-rays are particularly strong at high pressures and require protection for operators. Laser welding does not need a vacuum chamber and the workpiece before welding demagnetization treatment, it can be carried out in the atmosphere, there is no X-ray problem, so it can be in the production line online operation, also can weld magnetic materials.