Laser cutting gas use

Auxiliary gas laser cutting machine is mainly used in:
1, a gas laser (the laser generator for generating a gas laser)
2, compressed air (generally used to protect the optical path, and some manufacturers also used as protective gas)
3, auxiliary gas (that is, from the cutting machine cutting nozzle of the gas emitted by the landlord said)
Laser cutting machine different materials need different auxiliary gas. Traffic of different thickness of the cut material, the pressure of the auxiliary gas and its requirements are not the same.
Cutting carbon steel with oxygen, which generally requires purity of 99.5% or higher. The main role is to blow off the combustion and cutting the molten material. Pressure and flow of each laser cutting machine manufacturers vary the size of this model with the cutting nozzle, cutting material thickness inseparable. General requirements for pressure 0.3-0.8Mpa, cut mouth general 0.02-0.05Mpa. Traffic can not say, for example, cut 22mm steel, the flow of some manufacturers to achieve 10M3 / h (including double cutting nozzle protection with oxygen)
Cutting stainless steel to use nitrogen. Role is used to prevent oxidation and blow off the molten material. For nitrogen purity has a high demand (especially more than 8mm stainless steel, requires generally 99.999% purity) pressure requirements is relatively large, the general requirements 1Mpa above, such as to cut 12mm or more, or thicker to 25mm of stainless steel, the required pressure higher, 2Mpa above or higher. According to the cutting nozzle flow model has changed, but are large, such as cutting 12mm stainless steel to some manufacturers to 150m3 / h and cut 3mm and as long as the flow rate 50m3 / h or less.
From a cost, the relatively inexpensive cutting carbon steel with oxygen, nitrogen, carbon steel cut not a great amount, the amount of thick stainless steel and the amount of nitrogen purity are demanding. Great cost.