Laser cutting machine as a general processing means of modern manufacturing industry, break the traditional processing way, with a new cutting technology in all walks of life is widely used, especially fiber laser cutting machine, rocket development in recent years.

Then, the laser cutting machine in the process of cutting must use auxiliary gas, which is also a problem that many users are more concerned about, today's laser to talk about laser cutting machine in the process of cutting why to add auxiliary gas and users how to make reasonable use of auxiliary gas.

Before figuring out how to choose the auxiliary gas of the laser cutting machine, we must first understand why we want to use the auxiliary gas and the role of the auxiliary gas. After many years of experience in the laser cutting industry:

In addition to blowing away the slag in the coaxial slit, the use of auxiliary gas can also cool the surface of the processed object, reduce the heat-affected zone, cool the focusing lens, and prevent the fumes from entering the lens base and contamining the lens and causing overheating of the lens. The selection of gas pressure and type has a great impact on the cutting process. The selection of auxiliary gas will have a certain impact on the performance of cutting, including cutting speed, cutting thickness and so on. How to choose the auxiliary gas laser cutting machine laser cutting machine can use the auxiliary gas mainly oxygen, nitrogen, air and argon these several kinds, we for different auxiliary gas, to introduce its use and characteristics, only for your reference.

The gas plant

1.Air gas

The air can be supplied directly by the air compressor, so it is very cheap compared to other gases. Although the air contains about 20% oxygen, but the cutting efficiency is far less than oxygen, and the cutting ability is similar to nitrogen. There will be a trace oxide film on the cutting surface, but it can be used as a measure to prevent the coating from falling off. The end face of the incision is yellow. The main applicable materials are aluminum, aluminum alloy, stainless copper, brass, plating steel plate, non-metal and so on.

2.Nitrogen

Some metals in the cutting when the oxygen will form an oxide film on the cutting surface, the use of nitrogen can be used to prevent the oxidation of the film without oxidation cutting. No oxidation cutting surface can be directly welded, coated, corrosion resistance and other characteristics. The end face of the incision is white. The main suitable plates are stainless steel, electroplated steel plate, brass, aluminum, aluminum alloy, etc.

3.Oxygen

Mainly used for cutting carbon steel with laser cutting machine. When the oxygen reaction heat is used to improve the cutting efficiency, the resulting oxide film will improve the spectral absorption factor of the reflective material. The end face of the incision is black or dark yellow. It is mainly used for rolling steel, rolling steel for dissolution structure, carbon steel for mechanical structure, high tension plate, tool plate, stainless steel, electroplating plate, copper, copper alloy, etc.

4.Argon gas

Argon gas is an inert gas, used in laser cutting machine cutting to prevent oxidation and nitriding, also used in welding, compared with other processing gases, the price of japonica rice, the corresponding increase in cost. The end face of the incision is white. The main suitable materials are titanium, titanium alloy and so on.