Impact of Process Parameters on Laser Beam Machining of Ceramic Material

Laser Beam Machining (LBM) is a procedure of directing the laser beam to generate heat energy to vaporize the interacting material on the surface of the workpiece. Ceramics are used in several applications, like hybrid circuits in the automotive industry, environment-friendly LEDs, and other electrical components. The basis of the study is to analyze the machining of alumina ceramic by LBM to enhance process parameters such as Material Removal Rate (MRR), Conicity (CO), and Overcut (OV) by inspecting machining parameters like Power (P), Transverse Speed (TS), Standoff Distance (SOD) and Gas Pressure (GP) precisely. From multiple assessments of varying SOD, high MRR, finer overcut, and conicity are achieved. The deterministic parameters for machining on alumina ceramic are the standoff distance and transverse speed. The SOD between the workpiece surface and nozzle, influences the intensity and divergence of the beam to get better overcut and conicity. At the same time, transverse speed affects the cutting time of the workpiece since increased cutting speed reduces cutting time on the workpiece resulting in high MRR.