灰铸铁激光表面熔化处理的表面质量分析

探讨了灰铸铁激光表面熔化处理表面的质量。试验表明:通过调节激光器的输出功率、光斑直径和扫描速度可以方便地控制熔化层深度和表面平整度。采用惰性气体保护可以基本消除表面气孔。适当的选材与低温预热及后热可以抑制表面裂纹的产生。

Analysis of surface quality of grey iron subjected to laser melting treatment

This paper deals with the influence of laser beam on the width and depth of melting zona and surface smoothness. The experimental result shows that the depth of hardened zone and smoothness of surface can be controlled conveniently by varying the power output beam diameter and scanning rate of laser light. By means of shielding gases, porosity can be reduced greatly. Proper selection of materials, preheating and postheating can help to avoid cracking.