Manufacturing of Friction Stir Welding Tool and Characterisation of Welded Aluminium Alloy

Abstract

Conventional process like arc welding and gas welding are not suitable for pure aluminium and copper and its alloys due to its low melting point, high thermal conductivity and presence of high impurities after welding. Here introducing an alternative method of welding for such materials known as friction stir welding by drilling machine. Here designed a tool shoulder which accurately fix into the machine. Then after a tool probe, which does the crucial job of friction welding. The tool probe and tool shoulder are manufactured based on the design and then assembled to make the tool and welding is completed. Conducted welding with three different speed and produces weld joint of different properties. Welded specimens taken for nondestructive and destructive testing to compare the mechanical strength, quality of and other mechanical properties of the weld produced