A Method for Homogenization of Thermal Shock Composite Residual Stress

Abstract

The invention relates to a thermal vibration composite residual stress homogenization method. The method comprises the following steps: one, analyzing the residual stress distribution of an aging element, so as to know a residual stress integral level; two, determining an application mode for evaluating residual stress homogenization effect, and completing a thermal vibration composite aging early-period test; three, establishing a thermal and vibration implementation scheme of the thermal vibration composite residual stress homogenization method, deciding a process flow, selecting the temperature, the excitation force, the excitation frequency, the excitation position, the support position and the work time and other process parameters; four, on the basis of the selected process parameters, implementing thermal vibration composite aging residual stress homogenization of the workpiece; and five, carrying out thermal vibration composite aging post-period test, and evaluating the thermal vibration composite residual stress homogenization effect. The thermal and vibration composite effect is utilized to realize residual stress homogenization, the vibration aging effect is strengthened, and the using stability of the workpiece is improved.

Description

technical field [0001] The invention relates to a thermal vibration compound residual stress homogenization method, which is a method for realizing the residual stress homogenization of metal workpieces or blanks by using the composite effect of thermal aging and vibration aging. The invention belongs to the technical field of product quality control technology in mechanical manufacturing. Background technique [0002] With the steady development of the national economy and the needs of scientific and technological progress, the advanced manufacturing field represented by aerospace has higher and higher requirements for product performance. However, the large overall thin-walled structural parts used in aircraft often have excessive processing deformation during machining, which directly leads to adverse consequences such as workpiece scrapping and construction delays; , will also produce large service deformation, which directly affects the working state and service life o...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for homogenizing thermal vibration composite residual stress, which uses the composite effect of thermal aging and vibration aging to solve the problem of limited effect of existing vibration aging technology, so as to obtain small processing deformation, stable service size and Workpieces with high fatigue life

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