How to use a handheld laser welding machine for wire welding?
1,Selection of copper nozzle for laser welding machine.
Copper nozzles are mainly divided into: whether to feed wire, size of welding wire, welding angle, and different diameters of welding wire should be matched with corresponding welding copper nozzles.
2,Selection of protective gas for laser welding machine.
Laser welding machines can blow in three gases: helium, argon, and nitrogen as protective gases. Argon gas has the highest cost-effectiveness, with a low price and high density, which can effectively protect the weld seam; Nitrogen is the most cost-effective, but certain types of stainless steel are not suitable for protection with argon gas; Helium has the highest price, but it is the most effective protective gas in laser welding, as it can directly reach the surface of the workpiece.
The selection of protective gas for laser welding machines should be comprehensively considered based on factors such as the material, position, method, effect, and cost of laser welding.
3,Precautions for laser welding machine during welding.
The focused laser spot of laser wire filling welding acts on the welding wire, rather than directly on the surface of the workpiece, and the welding wire melts and fills the weld seam when heated.
The wire feeding speed of laser welding machine is an important process for welding. If the wire feeding speed is too fast, it will cause excessive melting of the metal, and if the wire feeding speed is too slow, it will cause insufficient melting of the metal, affecting the formation of the weld seam. Therefore, during welding, attention should be paid to the wire feeding speed, welding speed, and power. In order to fully utilize the laser energy during the welding process, the laser power should be increased as much as possible. Under the condition of meeting the formation of the weld seam, the wire feeding speed should be slowed down to achieve the best filling welding effect of the laser welding wire.
