冷硬铸铁激光加热辅助切削实验研究

Laser assisted hot machining of cold-hard cast iron

冷硬铸铁具有很高的硬度、强度和很好的耐磨性 ,但其切削加工性能很差 .激光加热辅助切削是加工冷硬铸铁这种高硬材料的有效方法 .进行了常规切削和激光加热辅助切削对比性实验研究 ,检测了切削力随切削深度和切削速度的变化规律 ,实验结果表明 ,激光加热辅助切削冷硬铸铁时切削力下降非常明显 ,接近 5 0 %;进行了刀具磨损实验 ,加热辅助切削明显减轻了刀具的磨损 ,磨损量降低了 2 4%,提高了刀具的寿命 .

The laser assisted hot machining is suitable for machining cold-hard cast iron. Experimental results show that the main cutting force reduced by about 24% in laser assisted machining as compared with conventional cutting, and the tool wear reduced by about 50%.