Effects of Machining Conditions on High Wear Resistance of Material Surface Dulled by Laser Machining

Abstract

The surfaces of roll material were dulled by Nd-YAG laser machining under some conditions of focal length cooling and number of beams for laser irradiation, and the rolling and sliding wear experiments were made in order to investigate the wear resistance of crater rims formed on the dulled surfaces. Then, the effects of distances from a focusing lens to a roll material, cooling conditions of air and water and combined irradiation of 2 beams on the wear resistance of crater rims were clarified. As a result, it has been found that the condition of 1 beam irradiation, water cooling and appropriate focal length is the best for the wear resistance of crater rims in the present series of experimental conditions. © 1999, The Japan Society of Mechanical Engineers. All rights reserved.