Experimental Investigation and Micro Structural Variation in Friction Drilling on AISI 1015 Low Carbon Steel, AISI 1008 Aluminium and Copper by Using Tungsten Carbide Tool

Thermal drilling uses a tungsten carbide tool to conduct a comparative investigation of form-drilled holes on AISI1015 low carbon steel, AISI 1015 copper, and AISI 1008 Aluminium. By using friction drilling, which uses heat generated by friction between a revolving conical tool and the work material to soften and pierce the thin-walled work piece to make a hole with a bushing, holes have been drilled on AISI 1015 Copper, AISI 1008 Aluminum and Mild Steel square tubes. The bushing improves threading depth and clamp load capacity while being the most effective for threading. During friction drilling, naturally generated bush has a large variety of applications. Spindle speed and the t/d ratio of friction drilled holes have the biggest effects on the process. In tests, Taguchi’s orthogonal array L9 has been employed. During the friction drilling process, temperature, bush length, hardness, and micro structural variation are measured and studied.