Laser forming repair method and tool for defect damage of thin-wall structure

Abstract

The invention provides a laser forming repair method and tool for the defect damage of a thin-wall structure. The method comprises the steps that a profiling thickening plate is manufactured accordingto the shape of a to-be-repaired area, and the profiling line of the profiling thickening plate is the same as the shape of a to-be-repaired edge; a profiling attachment face of the profiling thickening plate is attached to the side face of the thin-wall structure, and the profiling line of the profiling thickening plate is attached to the to-be-repaired edge of the thin-wall structure and is flush with the to-be-repaired edge of the thin-wall structure; and then the laser forming repair is conducted on the to-be-repaired area by using an additive manufacturing technology. The profiling thickening plate is adopted to thicken the to-be-repaired area of the thin-wall structure, thickening treatment of the thin-wall structure with a complex profile and the ultrathin size and protection treatment of the area located outside the to-be-repaired area are achieved, the problem that light leakage or collapse happens due to the fact that the diameter of a light spot is larger than the wall thickness in the repair process is solved, and therefore the low-power small light spot laser forming repair and the high-quality and high-performance laser forming repair of the thin-wall structure can be achieved.

Description

technical field [0001] The invention relates to a laser forming repair method for defect damage of thin-walled structure. [0002] The invention also relates to a laser forming repair tool for thin-wall structural defect damage. Background technique [0003] Due to the complex manufacturing process and high production cost of metal parts with thin-walled structures, parts with thin-walled structures such as aero-engine and gas turbine blades are prone to damage defects such as cracks, missing corners or even fractures during processing or service. If it is directly scrapped and replaced with new parts, the cost will be greatly increased, resulting in a serious waste of resources. However, the damage repair of general thin-walled structures, such as fusion welding, electron beam welding, and argon arc welding, is prone to problems such as excessive thermal influence of the substrate, deformation or micro-cracks, and complex thin-walled structures due to complex shapes and sm...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a laser forming repair method and repair tool for thin-walled structure defects, so as to solve the problem that complex thin-walled structures are difficult to achieve high-performance repair due to complex profiles and small wall thicknesses

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