Explanation of the selection of fiber laser cutting gas and pressure

When cutting with fiber laser cutting machine, different cutting gases are selected according to the material of the cutting plate. The choice of gas and pressure has a great influence on the quality of fiber laser cutting machine.

Influence of cutting gas and pressure on cutting quality

1) Cutting gas helps to dissipate heat and combustion, blowing off the melt stains, so as to get a better quality of the cut section.

2) When the pressure of cutting gas is not enough, it will affect the cutting quality as follows: melt stains will be produced when cutting, and the cutting speed will not be able to satisfy, which will affect the production efficiency.

3) When the pressure of cutting gas is too high, it will have the following effects on the cutting quality: the cutting surface is rough and the slit is wider; at the same time, it will cause the part of the cut section to melt, and it will not be able to form a good cutting section.

Effect of cutting gas pressure on perforation

1) When the gas pressure is too low, the laser is not easy to penetrate the cut sheet, and the perforation time increases, resulting in low productivity.

2) When the gas pressure is too high, it causes melting at the penetration point, resulting in a larger melting point, which affects the quality of the cut.

3) When punching with a laser, a higher gas pressure is generally used for punching thin sheet parts, while a specific punching method is used for punching thick sheet parts, eliminating the unfavorable factor of low gas pressure on lens protection.

4) Laser cutting machine in cutting ordinary carbon steel, the thicker the material thickness, the cutting gas pressure is relatively low. While cutting stainless steel, cutting gas pressure increases with the thickness of the material relatively speaking. In short, the laser cutting gas and pressure selection, must be in the cutting according to the actual situation to adjust, in specific applications need to be based on the specific circumstances and the choice of different cutting parameters.