Electromagnetic field regulation and control method of surface residual stress of aero-engine component

Abstract

The invention discloses an electromagnetic field regulation and control method of surface residual stress of an aero-engine component. The regulation and control method comprises the following step: performing electromagnetic field regulation and controlling on the new-made aero-engine component at normal temperature for 3-600s, wherein the electromagnetic field is formed by coupling an alternating magnetic field and a pulsed electric field; the intensity of the alternating magnetic field is 500-30,000A / m; the frequency of the alternating magnetic field is 1-1,000Hz; the maximum peak current of the pulsed electric field is 5-20,000A; the pulse period of the pulsed electric field is 0.01-1.0s. According to the method, the traditional shot blasting process is canceled, and the distribution of residual stress of a surface layer and a near-surface layer of a material of the component is regulated and controlled by an electromagnetic field, so that the manufacturing accuracy and the surface roughness can be improved, the technological process is shortened, the manufacturing cost is lowered, and the manufacturing period is shortened.

Description

Technical field [0001] The invention belongs to the technical field of surface treatment of aeroengine components, and particularly relates to a method for regulating and controlling the residual stress electromagnetic field on the surface of aeroengine components. Background technique [0002] Titanium alloys and powdered superalloys have excellent properties such as high specific strength, high specific modulus, high temperature resistance, oxidation resistance and flame retardancy, and are the main materials for key components of aero engines. The blades, discs, casings and other components of the current engine fans and compressors are mainly made of such alloys. These key components are subjected to loads such as high temperature, vibration, aerodynamics, and centrifugal force during service. The working environment is harsh, and the requirements for the surface structure and residual stress distribution are very strict. [0003] At present, in the aviation industry, shot pee...

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Problems solved by technology

[0005] In order to solve the defect that the shot peening process will cause damage to the surface of the component in the background technology, the present invention provides a method for controlling the residual stress electromagnetic field on the surface of the aero-engine component, which cancels the traditional shot peening process, and uses the electromagnetic field to control the residual stress on the surface and near the surface of the component material. Stress distribution can improve manufacturing accuracy and surface roughness, shorten process flow, reduce manufacturing cost and cycle