激光精密切割不锈钢薄板的工艺研究

采用Nd∶YAG脉冲激光器对不锈钢进行了精密切割。系统研究了工艺参数对切缝宽度和切缝质量的影响规律。结果表明,缝宽随激光功率密度、频率以及脉宽的增加而加大;提高激光输出重复频率,不仅有利于提高加工质量,而且可以增大切割速度,提高加工效率。在此基础上,导出了光斑重叠度和极限切割速度的计算公式,利用此公式估算的脉冲激光切割的极限速度与实验结果符合很好

Study of YAG Laser Cutting Process with Stainless Steel Sheet

In this paper, the experiments of cutting stainless steel sheet with Nd∶YAG pulse laser, were carried out. The effects of laser process parameters on kerf width and quality were studied. The results showed that the kerf width increases with the increase of the power density, pulse frequency and pulse width; the cutting speed is increased and the cutting quality is improved with increasing the pulse frequency. Besides, the calculation formulas of the overlapping degree of the neighboring laser pulse and the maximum cutting speed are deduced.