Review: Friction Stir Welding Cooling Technologies

Abstract

Friction stir welding is a solid state welding. The welding is done by melting of tool at high temperature
by friction and the stirring of weldment with the help of non-consumable rotating tool called Friction
Stir Welding. The FSW tool is a cylindrical object which consists of Pin, Shank, and Shoulder etc.
Because of the compressive force given by the tool to the weldment, larger amount of temperature is
created at the welding portion. Hence, heat created at the juncture is transported throughout the tool
surface. So at one point of time, we have to stop the welding and allow the tool to cool down. It is
requisite to dissipate the temperature. Nowadays experts around the globe, have did the research in
cooling in friction stir welding. Cooling also improves welding efficiency and micro structure. Here we
review the various cooling technologies in friction stir welding.