Study for technics of friction stitch welding

Friction stitch welding is a kind of new connection technology. It is fall short of 20 years after TWI brought forward the concept. The weld seam of friction stitch welding is composed with a series of FHPP. Shielding gas flux, feed speed, rotation speed, welding pressure, shape of bar and hole, heating temperature are the primary parameters which can influent the welding quality. The molding mechanism of friction stitch welding is different form direct drive friction welding, friction surfacing and inertia drive friction welding. In order to learn the influence of welding parameters for friction stitch welding quality, a series of FHPP and stitch molding experiment have been carried out.