The other side where the direction of rotation is not similar to the direction of welding is known as a retreating side. A half plate where the direction of rotation is similar to the direction of rotation of welding is known as advancing side. There will be a clamp which does not allow workpiece from lifting or spreading during welding. A workpiece that has square matting edges is fixed to a backing plate which is rigid. Working principle of friction stir welding process has a welding tool which is comprised of shoulder, shank, and a pin will be fixed in a milling device chuck which rotates about its longitudinal axis. Table1: Benefits of Friction Stir Welding Metallurgical benefits Environmental benefits Energy benefits Absence of cracking Saving of consumable materials like wire, rugs and other gases Use of improved materials permits decrease in weight Solid phase process It eliminates grinding wastes Fine microstructure Does not need any surface cleaning Low distortion of workpiece Does not need any shielding gas too Friction stir welding decreases the consumption of fuel in lightweight aircraft automotive and ship applications No loss of alloying Good dimensional stability Repeatability Friction stir welding has following benefits:īenefits related to all the three parameters are explained in below table in a detailed manner.
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