from the up to the bottom. Here are the suggested cutting gas and its purity (Figure 5). The higher the
gas purity is, the better the cutting quality of section will be.
The dregs can be filtered in the gas providing pipes while O2 and vapor can easily enter into the
optical system by permeating nonmetal parts, which is the reason why dust and hydrocarbon appear
inside the cutting head. So we kindly suggest you to use accessories in stainless steel and to use
purifier that can filter particulate minimum in 0.01 μm. And suggest you to use diaphragm pressure
gage in stainless steel, if you use diaphragm pressure gage in rubber, once the rubber aged, it can
easily react with the air inhaled by the industrial pressure gage and generate hydrocarbon.
A200M fiber laser cutting head has 1 cutting gas circuit, the outside diameter of gas pipe is 10mm.
(Figure 5)
Figure 5. The interface of cutting gas of A200M fiber laser cutting head.
Type of gas
O2
N2
Ar
He
Purity
99.95%
99.99%
99.998%
99.998%
PS: Please don’t change the gas connector randomly, especially don’t use PTFE tape to seal
the gas connector or it may block the gas circuit thus affect the cutting quality and damage the
cutting head.
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