04-10-2014, 10:41 AM
Abstracts: Friction stir welding (FSW) is a solid-state process, which means that the objects are joined without reaching melting point. This opens up whole new areas in welding technology. Suitable for joining soft materials such as Al and alloys, Mg and alloys, Cu and alloys, Ti and alloys, steel and joining of dissimilar metals and alloys. A FSW uses a non-consumable tool inserted between the two bodies to heat the material to be joined. Here we review and critically examine several important aspects of FSW tools such as tool material selection, geometry and load bearing ability, variation in tool design, improved welding techniques and new tool materials being developed for the welding of more difficult Al and alloy to give increased tool life. In FSW main parameter in welding and surface roughness is speed, tilting angle, material. Design of experiment is use to optimize final condition for good surface roughness and welding strength .We are utilized 2^3 design for optimize the welding strength and roughness.