激光焊接中金属表面对CO_2激光的吸收特性

Laser Absorption Characteristic of Metal Surface during CO_2 Laser Welding

利用激光焊接中反射光和散射光的采集接收 ,得到金属表面在激光照射不同阶段的吸收特性曲线 .研究激光功率对吸收曲线的影响 。

By harvesting reflected light and scattered light during CO 2 laser welding,a characteristic curve is obtained for reflecting laser absorption of metal surface in different phases of laser irradiation.The effect of laser power on absorption curve is studied;and a method is worked out for evaluating ultimate moving speed of laser beam during laser welding.