FRICTION WELDING APPARATUS Russian patent published in 2003 - IPC

FIELD: aircraft manufacture, ship building and other branches of machine engineering, mainly joints of sheet constructions, shells, bodies and so on. SUBSTANCE: apparatus includes pressure member having contact surface preventing pressing out of butt material heated until plasticized state. Relief of contact surface of pressure member corresponds to relief of surfaces of joined parts in zone of their jointing. Opening directed to rear portion of contact surface of pressure member and inclined by 10-15 degrees passes to groove having cross section in the form of segment with arc radius equal to 1.0 - 1.5 radius of tool. Pressure member may have roller mounted with possibility of rotation in slit. EFFECT: improved design allowing to enhance quality and strength characteristics of joints in different material structures. 2 cl, 2 dwg