Choice of gas and pressure for fiber laser cutting

When the fiber laser cutting machine cuts, according to the material of the cut sheet, need chose different cutting gases . The choice of gas and pressure has a great influence on the quality of fiber laser cutting machine.

The influence of cutting gas and pressure on cutting quality

1) The cutting gas helps to dissipate heat and support combustion, blow away the molten stains, and obtain a better quality cutting section.

2) When the pressure of the cutting gas is insufficient, the cutting quality will be affect as follows: melting stains are generate during cutting, and the cutting speed cannot  satisfy, so affects production efficiency.

3) When the pressure of the cutting gas is too high, the impact on the cutting quality: the cutting surface is rough, and the slit is wide; at the same time, so will cause partial melting of the cut section and fail to form a good cut section.

The influence of cutting gas pressure on perforation

1) When the gas pressure is too low, the laser will not easily penetrate the cut sheet, and the punching time will increase, so resulting in low productivity.

2) When the gas pressure is too high, the penetration point will melt, forming a larger melting point, which will affect the cutting quality.

3) In laser drilling, a higher gas pressure is generally use to punch thin plates, while a specific drilling method is use to punch thick plates to eliminate the disadvantages of low air pressure for lens protection.

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