When the optical fiber laser cutting machine is cutting, different cutting gases are selected according to the different materials of the cutting plates. 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) The cutting gas is helpful to heat dissipation and combustion, blow off the molten stains, and thus obtain a high-quality cutting section.
2) When the pressure of cutting gas is insufficient, the following impacts will be caused to the cutting quality: molten stains will be generated during cutting, and the cutting speed cannot meet the requirements, which will affect the production efficiency.
3) When the cutting gas pressure is too high, the impact on the cutting quality: the cutting surface is rough, and the cutting seam is wide; At the same time, it will cause partial melting of the cutting section, which will not form a good cutting section.
Influence of cutting gas pressure on perforation
1) When the gas pressure is too low, the laser is not easy 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, forming a larger melting point, thus affecting the cutting quality.
3) When laser drilling, generally higher gas pressure is used for thin plate drilling, while specific drilling method is used for thick plate drilling to eliminate the adverse factors of low air pressure on lens protection.
4) When laser cutting machine is cutting ordinary carbon steel, the thicker the material is, the lower the cutting gas pressure is. When cutting stainless steel, the cutting gas pressure increases with the material thickness. In a word, the selection of cutting gas and pressure during laser cutting must be adjusted according to the actual situation, and different cutting parameters should be selected according to the specific situation in specific applications