Low temperature treatment-vibration aging combined residual stress homogenization method

Abstract

The invention discloses a low temperature treatment-vibration aging combined residual stress homogenization method. The low temperature treatment-vibration aging combined residual stress homogenization method comprises the following steps of 1, analyzing distribution of residual stress of an aged workpiece to obtain an integral level of residual stress, 2, determining an application method for evaluation on residual stress homogenization effects and carrying out a low temperature treatment-vibration aging combined aging pre-test, 3, making low temperature treatment and vibration aging implementation plans of the low temperature treatment-vibration aging combined residual stress homogenization method by designing technical processed and selecting technological parameters such as a temperature, an excitation force, excitation frequency, an excitation position, a support position and work time, 4, carrying out low temperature treatment according to the technological parameters, 5, carrying out vibration aging treatment on the aged workpiece subjected to low temperature treatment, and 6, carrying out a low temperature treatment-vibration aging combined aging later test and evaluating the low temperature treatment-vibration aging combined residual stress homogenization effect. The low temperature treatment-vibration aging combined residual stress homogenization method utilizes synergism of low temperature treatment and vibration aging to realize residual stress homogenization, improves vibration aging effects and improves a workpiece service life.

Description

technical field [0001] The invention relates to a cold-vibration composite residual stress homogenization method, which is a method for realizing the homogenization of the residual stress of a metal workpiece or blank by using the composite effect of low temperature and vibration aging. The invention belongs to the technical field of product quality control technology in mechanical manufacturing. Background technique [0002] In the machinery manufacturing industry, especially various high-tech equipment manufacturing industries, the requirements for the comprehensive performance of metal workpieces are getting higher and higher. Similar to problems such as excessive deformation of aircraft engine casings during processing or crack damage during use, which greatly affect the production efficiency of aviation companies, and aerospace critical parts are expensive due to performance requirements. If they are scrapped due to deformation, The loss is huge. These problems in par...

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Problems solved by technology

[0008] The purpose of the present invention is to provide a method for homogenizing residual stress combined with cold vibration, which uses the composite effect of low temperature 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 high Workpieces with fatigue life

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