Laser Shock Strengthening Method for Tenon and Groove Parts of Superalloy Small Size Turbine Disc

Abstract

The invention discloses a laser shock strengthening method for the tenon and groove parts of a small-sized turbine disk of a high-temperature alloy, which belongs to the field of laser strengthening, and includes the following steps: designing a trajectory scheme for laser shock strengthening of the tenon and groove of a turbine disk, and adopting different methods for different parts of the tenon teeth of the same tenon and groove. Laser shock strengthening parameters and laser oblique incident angle; import the robot fixture model into the corresponding spatial position in the robot simulation system software according to the spatial position data of the object; generate the laser shock strengthening robot trajectory program for the tongue and groove; compile the robot program; generate the entire Robotic laser shock peening trajectory program for all tenons and grooves of the turbine disk; determine the laser shock peening location of each tenon tooth of different tenons and the corresponding laser shock peening laser parameters for the bottom of the tenon and groove; perform laser shock peening on the turbine disk. The invention can solve the problem of beam accessibility, can accurately quantify the laser shock strengthening parameters of each point, realizes variable parameter laser shock strengthening, and has flexibility.

Description

technical field [0001] The invention relates to the field of laser shock strengthening, in particular to a laser shock strengthening method for the mortise and groove parts of a small-sized turbine disk of a superalloy. Background technique [0002] When the aero-engine is working, the turbine disk is mainly subjected to centrifugal stress and thermal stress, both of which change cyclically with the change of the engine's working state. The turbine disk also has a large residual stress effect. Due to the complex shape of the disk, some high-stress parts with local stress concentration often appear during work. [0003] Laser shock strengthening technology, as a surface treatment technology in the foreword, induces plastic deformation on the surface of the part through the shock wave induced by laser, forming a large residual compressive stress, and at the same time can cause changes in the microstructure of the part, thereby significantly improving the mechanical properties ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above problems, the present invention provides a laser shock strengthening method for the mortise and groove of a small-sized turbine disk of a high-temperature alloy, which can solve the problem of poor beam accessibility

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