Light-Gas Eccentrically High Speed Laser Cutting of Silicon Steel on Cold Rolling Production Line

Abstract

In view of the cutting speed reduced and cutting quality became poor because cutting front changes to flat and amount of lag changes to large, light-gas eccentrically cutting method was proposed. Through the experiment and analysis of the results, the conclusion can be obtained that when laser beam is before gas jet, cutting speed can be improved. While offset distance have impacts to cutting result. If the offset distance is too small, it has no difference with light - gas coaxial cutting; if the offset distance is too large, it weakens the gas jet at the cutting surface, which is not conducive to cutting. It can achieve the best results when the offset distance is 0.3mm.The cutting quality with 1.5mm diameter nozzle is better than that of 2mm. Therefore within the allowable range in the offset distance the nozzle aperture should be reduced.