METHOD OF INCREASING SURFACE HARDNESS AND CASE DEPTH OF A STEEL SUBSTRATE BY SURFACE TEXTURISATION AND HIGH POWER DIODE LASER HARDENING

摘要

A method of enhancing laser absorption on steel substrate thereby achieving better properties of hardened case, comprising the following steps; surface texturing of a steel sample, to achieved a roughness value ranging from 1 to 2 microns, solvent cleaning of the surface after texturing for laser treatment, treatment of textured steel surface with high power diode laser (HPDL), testing for erosion of steel surface, treated with high power diode laser,