Patent ID: 6095402
Filing Date: 2000-08-01
Classification: B23K,F01D,Y10T

Abstract:
A method for the manufacture or repair of a BLISK in which a blade is attached by linear friction welding to a disk having a tapering peripheral surface, comprising forming on the disk and the blade weld joint surfaces which during welding are urged into contact by a weld force, causing linear oscillation of the blade relative to the disk in a predetermined direction while simultaneously applying said weld force,characterised in that:the disk weld joint surface is formed on the upper surface of an upstanding stub on the circumferential periphery of the disk at a substantially constant height above the disk periphery surface, the shape of the stub weld joint surface in axial and circumferential directions being determined according to an intersection of a blade envelope with a tapered periphery of the disk, and in a third direction by a locus of a straight line parallel to the predetermined direction of welding oscillation, and forming on the blade a weld joint surface complementary to the surface on the stub.