When cutting with a fiber laser cutting machine, different cutting gases are selected according to the material of the cutting plate. The selection of gas and pressure has a great impact on the quality of fiber laser cutting machines.
The influence of cutting gas and pressure on cutting quality
1) The cutting gas helps dissipate heat and support combustion, and blows away molten stains to obtain better quality cutting sections.
2) When the pressure of the cutting gas is insufficient, the cutting quality will be affected as follows: melt stains will be produced during cutting, and the cutting speed will not be sufficient, affecting production efficiency.
3) When the pressure of the cutting gas is too high, the impact on the cutting quality: the cutting surface will be rough and the cutting slit will be wide; at the same time, the cut section will be partially melted, making it impossible to form a good cutting section.
Effect of cutting gas pressure on perforation
1) When the gas pressure is too low, it is difficult for the laser to penetrate the cutting plate, and the drilling time increases, resulting in low productivity.
2) When the gas pressure is too high, the penetration point will melt and form a larger melting point, thus affecting the quality of cutting.
3) When laser drilling, generally higher gas pressure is used for drilling thin plates, while a specific drilling method is used for drilling thick plates to eliminate the negative factors of low air pressure on lens protection.
4) When a laser cutting machine cuts ordinary carbon steel, the thicker the material, the lower the pressure of the cutting gas. When cutting stainless steel, the cutting gas pressure increases relatively with the thickness of the material. In short, the selection of cutting gas and pressure during laser cutting must be adjusted according to the actual situation during cutting. In specific applications, different cutting parameters need to be selected according to specific conditions.
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