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Views:0 Author:hu Publish Time: 2021-08-26 Origin:dapeng
The main precautions for laser welding of aluminum metal
Aluminum alloy laser welding machine is a laser welding machine specially developed for welding aluminum and aluminum alloy materials. It has the characteristics of high energy density and high welding speed. It is a great weapon for welding aluminum and its alloy materials. Aluminum and aluminum alloy products or accessories want to be welded firmly and the weld seam is beautiful, of course, it is inseparable from the aluminum alloy laser welding machine. Although the laser welding effect is good, aluminum and aluminum alloy have the characteristics of high reflection and low attraction rate. There are still technical difficulties in welding. Therefore, there are several points to pay attention to when laser welding.
When laser welding aluminum alloy, light reflection occurs on the surface of aluminum alloy. Because aluminum alloy is a non-ferrous metal, it has strong reflectivity to all kinds of light. Small absorption rate and other characteristics. Therefore, before welding the aluminum alloy, it is necessary to clean the surface of the aluminum alloy to remove the oil stains on the surface. At the same time, it is necessary to thoroughly clean the oxide film on the metal surface to completely remove the oxide film to prevent the oxidation during welding from causing explosions and other safety threats.
When welding aluminum alloy with laser welding machine, make full preparations, because aluminum alloy has the characteristics of lively and easy to be oxidized, and it is easy to attach a large amount of dust and moisture on its surface, so in the welding process, if you do not do enough For the preparation, the things attached to the surface are easy to stay on the surface of the aluminum alloy with the rapid laser welding, which affects the quality of the aluminum alloy and the welding effect. Metals have thermal conductivity, so aluminum alloys also have strong thermal conductivity. When laser welding is used, it is easy to reflect the laser or quickly remove the heat of the laser, which will eventually lead to the failure of aluminum alloy welding. Therefore, when laser welding aluminum alloys, you must pay attention to and quickly increase the power density of the laser to prevent it from being reflected or conducted, and strive to weld the aluminum alloy with extremely high density at extreme times, so as to avoid reflectivity. Wait for the emergence of problems.