Thin-wall component recombining and restoring method based on pulse welding and laser augmented material restoring

Abstract

The invention discloses a thin-wall component recombining and restoring method based on pulse welding and laser augmented material restoring. The method is characterized in that firstly, the distribution and trend of cracks and other penetrating damage are determined through a coloring check method; secondly, grinding treatment is conducted through a hard alloy rotary file, and a penetrating groove in a relatively regular shape is formed; thirdly, optimal grinding of a pulse welding groove is conducted; fourthly, cleaning of the penetrating groove and a groove body of the penetrating groove is conducted; fifthly, pulse welding bridging restoring of the penetrating groove is conducted; sixthly, a bridging welding restored body is ground and cleaned; and seventhly, laser augmented material restoring is conducted on a damaged structure. The method has the following advantages that the pulse welding restoring bridging capability is high, a base plate does not need to be additionally designed or manufactured, the restoring technology process of a penetrating damage component can be simplified, and the restoring efficiency is improved. A pulse welding restoring control system outputs data stably and accurately, heat input in the restoring process can be accurately controlled, the deformation of the restored workpiece can be reduced, and the restoring precision is high. Three-dimensional forming restoring of the damaged component can be automatically achieved through laser deposition restoring, the restoring efficiency is improved, and the stability and consistency of the restoring technology are good.

Description

Technical field: [0001] The invention belongs to the technical field of repairing and remanufacturing of damaged parts, in particular to a composite repair method for thin-walled parts based on pulse welding and laser additive repair. Background technique: [0002] The working environment of aviation large thin-walled parts such as engine cases and blisks is harsh, and the parts are prone to cracks, corrosion and wear after being subjected to wear, impact, high-temperature gas and cold and heat fatigue. Due to the requirements of production cost and cycle, it is urgent to use advanced repair technology to achieve high-quality and efficient repair of damaged parts, prolong their service life, reduce the replacement of new parts, reduce huge economic losses, shorten the maintenance cycle, and repair large thin-walled parts in aviation Technology is increasingly valued by aviation manufacturing enterprises and maintenance enterprises. [0003] For damages such as cracks, corro...

AI Technical Summary

Problems solved by technology

However, for parts with penetrating damage, if laser additive repair is used, it is necessary to adaptively manufacture a special substrate according to the structural characteristics of the part and the area to be repaired as the substrate for the laser molten pool, so as to ensure the smooth progress of the repair and increase the repair cost. The complexity of the process increases the auxiliary time and cost of repair, reduces the repair efficiency, and limits the scope of application of the laser additive repair process

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