1, Body (within the laser generator for generating a laser gas)
2, Compressed air (generally used to protect the optical path, and some also use as protective gas)
3, Auxiliary gas (from the mouth erupted gas cutting machines)
Laser cutting machine cutting different materials need different auxiliary gas. Different thickness of cutting materials, auxiliary gas pressure and flow rate required is not the same. Cutting carbon with oxygen, and its purity requirements are generally in the 99.5% or higher. A major role in combustion and blow off cutting the molten material. Pressure and flow
laser cutting machine manufacturers of the same, which is inextricably linked with the the cutting nozzle model size, cutting the material sheet thickness. General requirements for pressure 0.3-0.8Mpa, generally 0.02-0.05Mpa cut mouth. Traffic is bad, such as cutting 22mm carbon steel, some l aser cutting machine manufacturers of traffic to reach 10M3 / h (including doublelayer the cutting nozzle protection with oxygen)
Cutting stainless steel use nitrogen. The role is to put an end to the oxidation reaction and blow off the molten material. Has a high nitrogen purity requirements (especially more than 8mm stainless steel, requirements are generally of 99.999% purity) pressure requirements of the relatively large, generally require 1Mpa above, such as to be cut above 12mm or more thick to 25mm stainless required pressure higher, 2 MPa or more, or even higher. Traffic according to the cutting nozzle models have changed, but are large, such as cutting 12mm stainless steel To some manufacturers to 150m3 / h cut 3mm long as 50m3 / h flow.
From cost cutting carbon with oxygen is relatively cheap, the large amount of nitrogen cutting carbon steel, the amount of the amount of nitrogen of the thicker stainless steel and purity are very demanding. Costly.