What Gas Does Handheld Laser Welding Machine Use?

Laser welding machines often use inert gases for protection when welding. The inert gas is also called rare gases. They are colorless and tasteless. It is difficult to chemically react with other materials. Because they are not lively, they often use them during welding When the air isolates the air, spray the surface of the workpiece at a certain pressure to avoid some gas in the air from oxidizing the welds.

The role of protecting gas:

1. Avoid oxidation during welding in workpieces;

2. Improve the aesthetics of the welding of the workpiece;

3. Preventing the problem of the pores;

4. Expand the laser utilization rate of laser welding machine;

5. Reduce the lens during the welding of laser welding machines to be splashed;

Protect the type of gas:

Protective gas can provide favorable conditions for the formation of welds. When welded materials are oxidized, protective gas is required; when welded materials do not care about surface oxidation, they can also be protected without gas. There are three types of maintenance gases for laser welding machines, namely sorchium, qi and nitrogen.

1.Argon

Argon is a very cost-effective protective gas, in the laser welding is used more is it, because the activity of argon is very low, almost no chemical reaction with common metals, cheap, high density, can be very good protection of the weld.

2.Nitrogen

Nitrogen is a very affordable shielding gas, but due to metallurgical problems, not suitable for welding certain types of stainless steel, but also may appear porous, so not suitable as a shielding gas for all metal welding, and stainless steel is a very common material, there are limitations.

3.Helium

Helium is a more expensive shielding gas, is also a more commonly used in laser welding shielding gas, better than argon and nitrogen protection, so that the laser does not impede the direct access to the surface of the workpiece, but the use of helium is more expensive.

Protecting gas safety:

1. Move the gas tank steadily when used;

2. Set the protective gas first, and then open the laser welding machine;

3. Users should stand on the side of the bottle mouth and slowly open the gas bottle valve;

4. The method of protecting the gas can be selected according to the situation. It is generally recommended to use the side axis side blowing;

5. Stay away from the source of the fire during storage to avoid high temperature or exposure;

Although the protective gas is invisible, it plays an important role and affects the quality of welding. On the one hand, on the one hand, it can be combined with factors such as welding materials, location, methods, costs, and effects. On the other hand, different gas can be used for welding testing, and gas welding machine gas that is suitable for them can be selected.