Temperature Monitoring in Laser Cladding Process

Abstract

This paper investigates the temperature monitoring technique during the laser cladding process. Experimental trials are made to understand the variation in temperature when cladding is going on. In this work, SS316L powder is cladded on martensitic stainless steel AISI 410 with an objective to study the temperature variation on the surface during the process of cladding. There are three K-type thermocouples are placed beneath the substrate (centre, right and left) to measure the temperature with a data acquisition system. Two sets of experiments are performed; one set consisting of single/multiple layers and the second set has single/multiple passes. The results obtained reveal the difference in temperature gradient which is low during the cladding process, and if the temperature increases, this may lead to distortion of the substrate. This also shows that the temperature rise is nominal as compared to other coating processes.