Double-laser forging remanufacturing and repairing device for damaged mortises of high-temperature alloy small-size structure turbine disc and application method thereof

Abstract

The invention relates to the technical field of remanufacturing and repairing of aeronautical parts, in particular to a double-laser forging remanufacturing and repairing device for damaged mortises of a high-temperature alloy small-size structure turbine disc and an application method thereof. Firstly, the damaged surface of the turbine disc is cleared, and damaged residues and the like are removed; a numerical model is generated by scanning the surface of a component point by point, then a complete component three-dimensional model is generated on a computer through three-dimensional software, the complete component three-dimensional module is compared with an original three-dimensional model, and the positions of all points and the related sizes are determined; a short-pulse laser is utilized to conduct impact strengthening processing on notch parts firstly, so that material structures at the notch parts are refined, and the bondability of notches is improved; and then, double laserbeams are utilized to repair the damaged parts, wherein the first-beam continuous pulse laser serves as heat source molten metal powder to repair the damaged parts such as tenon teeth of the turbinedisc, and the second-beam short pulse laser directly acts on the surface of high-temperature laser cladding metal. The pulse width is changed according to the variable section size of the repaired mortises, and macroscopic deformation is controlled.

Description

technical field [0001] The invention relates to the technical field of remanufacturing and repairing of aviation parts, in particular to a remanufacturing and repairing device and application method for damaged tongue-and-groove double laser forging of a turbine disk with a small-sized superalloy structure. Background technique [0002] As the key component of the aircraft - the heart, the aeroengine is the power source for the normal operation of the aircraft, and the turbine disk, as an important part of the aircraft engine, plays an important role in the performance of the aircraft. When the engine is in service, it starts and stops continuously, so that the turbine disk is subjected to complex cyclic loads, which is very prone to failures such as fatigue failure, creep / fracture, etc., which threatens the safety of the aircraft to a large extent. The use cost, maintenance cost and reliability of an aero-engine are closely related to the fractured key part of the engine - ...

AI Technical Summary

Problems solved by technology

In particular, the working conditions of the turbine are very harsh, so nickel-based superalloy materials with excellent performance but very expensive and complex manufacturing processes are used, so the cost is very high. Due to the complex shape and small size of the tenon teeth of the turbine disc, The space between tenon teeth and tenon teeth is small, and there are great technical difficulties in repairing the damaged parts. Therefore, the traditional treatment method is generally to replace the whole turbine disc, which consumes time, manpower and financial resources.

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