METHOD OF FRICTION WELDING WITH MIXING AND PERMANENT PROBE FOR USE IN FRICTION WELDING Russian patent published in 1999 - IPC

FIELD: mechanical engineering; cold welding of structures with continuous longitudinal welds. SUBSTANCE: method of friction welding with mixing is based on increased flow of plasticized material in horizontal and vertical directions relative to adjoining assembly parts. Pressure is applied to forming plasticized material in direction perpendicular to surfaces of parts to be connected with simultaneous provision of material flow along probe pin in vertical direction. plasticized material hardens behind the probe. Permanent probe has concave lower part with interchangeable pin. Pin has thread-shaped outer surface. In preferred version it has two or more blades projecting across. EFFECT: provision of homogeneous welds without cavities and other defects in welds of different types. 7 cl, 9 dwg