Method for repairing local damage of thin-wall rotary body structural part

Abstract

The invention relates to a method for repairing local damage of a thin-wall rotary body structural part. The method comprises the following steps: a local damaged part of the thin-wall rotary body structural part is cut off to form a welding surface; a segment repairing structure is prepared; the thin-wall rotary body structural part is wrapped with a surface smooth clamping tool, the segment repairing structure is wrapped with a welding tool, a supporting structural part is inserted into the thin-wall rotary body structural part, and an ejector pin is inserted into the segment repairing structure; the surface smooth clamping tool is used for clamping the outer side of the thin-wall rotary body structural part, the welding tool is used for clamping the outer side of the segment repairing structure, and friction welding is carried out after the welding face of the thin-wall rotary body structural part is aligned with the segment repairing structure; and after friction welding is finished, the welded thin-wall rotary body structural part is taken out. The device is simple in structure, the machined thin-wall rotary body structural part is almost free of deformation, the size precision meets the requirement, and the application value is high.

Description

technical field [0001] The invention relates to the technical field of friction welding, in particular to a method for repairing local damage of a thin-walled revolving body structural part. Background technique [0002] Inertial friction welding is a solid-phase connection method. The schematic diagram of the working principle is shown in the attached figure. During the welding process, one of the workpieces is clamped at the end of the flywheel, and after accelerating to the set speed, the flywheel is separated from the active motor. At the same time, another workpiece fixed on the moving fixture moves forward rapidly with the slide table. The two workpieces rub against each other under the action of friction pressure and generate friction heat. The interface temperature rises rapidly, and the matrix metal on both sides of the interface near the area softens and undergoes plasticity. Flow, under the action of friction pressure, is extruded from the interface to form flash....

AI Technical Summary

Problems solved by technology

[0004]Based on this, how to develop an inertia friction welding repair method for local damage of thin-walled rotary structural parts, so as to solve the problem of scrapping the entire rotary structural parts due to local damage, inertial The problems of structural deformation and high production cost due to excessive torsion and clamping force in the friction welding process are technical problems that need to be solved by those skilled in the art

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