Laser forming repair method and repair tooling for defect damage of thin-walled structure

Abstract

The invention provides a laser forming repair method and repair tool for thin-walled structural defect damage. According to the shape of the area to be repaired, a profiling thickened plate is made, and the profiling line of the profiling thickened plate is consistent with the to-be-repaired area. The shape of the repaired side is the same; the profiled fitting surface of the profiled thickened plate is fitted to the side of the thin-walled structure, and the profiled line of the profiled thickened plate is aligned with the thin-walled structure. The repaired sides are close together and flush; then, the laser forming repair is performed on the area to be repaired using additive manufacturing technology. The profiling thickening plate is used to thicken the area to be repaired of the thin-walled structure, which realizes the thickening treatment of the thin-walled structure with complex profiles and ultra-thin dimensions and the protection treatment outside the area to be repaired, and solves the problem in the repair process. Problems such as light leakage or collapse caused by the diameter of the spot being larger than the thickness of the wall, in order to achieve low-power and small-spot laser forming repair of thin-walled structures and high-quality, high-performance laser forming repair.

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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