FATIGUE ANALYSIS OF DISSIMILAR WELD MATERIAL

Friction welding is a one of the welding process to weld similar as well as dissimilar metals. It is finds increasingly widespread in industrial applications as mass production method for joining the parts and widely used in various industries. To improve the production facilities, research has been done on various set of friction welds to review the burn off length, upset force, friction force and spindle speed of various dissimilar joints. Friction welding is a collection of solid state welding processes, where heat is produced by means of mechanical friction between moving and stationary work pieces with the addition of an upsetting force to displace material plastically. The principle of this process is the changing of mechanical energy into heat energy.. The rotation is stopped at the point of fusion and forging pressure is applied axially on to the stationary work piece. The hot work causes refinement of grain structure. Then welding is done, without melting of parent metal 3-step process with a series of parameters unique to each job: rotational speed, friction force and burn of length. After the three parameters are set, they are recorded and maintained for use all over the entire process. The purpose of this present work was to assess the development of solid state structure of dissimilar materials of Aluminum 6061& SS 430 F steel is applied in the structural applications of aircraft, marine and automobile engineering.