What are the types of auxiliary gases that can be used by the laser cutting machine?

In addition to blowing away the slag in the coaxial kerf, the auxiliary gas used in laser cutting machine processing can also cool the surface of the processed object, reduce the heat-affected zone, cool the focusing lens, and prevent smoke and dust from entering the lens holder to pollute the lens and cause the lens to overheat ; In addition, some cutting gases can also play a role in protecting the base material. The auxiliary gases that can be used by the laser cutting machine are mainly oxygen, nitrogen, air and argon. Below we will introduce the different auxiliary gases:

1. Air: ①Used as cutting gas; ②Used as cooling fiber laser cutting head; ③Used as dust removal inside the optical path (protect the lens to extend the use time of the lens);

2. Ordinary oxygen: as the gas for cutting carbon steel (combustibility), the purity is 99.5%;

3. Pure nitrogen: as the gas for cutting stainless steel (cooling), the purity is 99.9% (cutting carbon steel speed is 3/4);

4. High-purity nitrogen: as the gas used for lasers, purity: 99.999%;

5. High-purity helium: as the gas used for lasers, purity: 99.999%;

6. High-purity carbon dioxide: used as a laser gas, purity: 99.999%.

According to different materials, different cutting requirements, different cutting auxiliary gases are used, the purpose of which is to obtain the best cutting quality.

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