Thermal vibration composite residual stress homogenization method

A residual stress and thermal vibration technology, applied in the field of residual stress homogenization of metal workpieces or blanks, and thermal vibration composite residual stress homogenization, it can solve the problems of limited effect of vibration aging technology, and achieve the effect of controllable vibration energy input.

Inactive Publication Date: 2014-02-26
BEIHANG UNIV
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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 vibratio

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  • Thermal vibration composite residual stress homogenization method

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Embodiment Construction

[0035] See figure 1 , a method for thermal shock composite residual stress homogenization described in the present invention, the specific steps of the method are as follows:

[0036] Step 1: According to the residual stress test experience in production practice or combined with computer numerical simulation technology, analyze the residual stress distribution law of aging parts, and select the specific reference position of aging parts;

[0037] Step 2: In order to evaluate the effect of residual stress homogenization, for the specific reference position of the aging parts selected in step 1, carry out the residual stress test and the size and shape measurement before thermal vibration combined aging;

[0038] Step 3: Analyze the material and structural shape of aging parts, determine the scheme of heating first and then vibrating or thermal vibration simultaneously for aging parts, and complete the formulation of related technological processes, so as to select the temperat...

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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...

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Application Information

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IPC IPC(8): C21D10/00
CPCY02P10/20
Inventor 张以都吕田
Owner BEIHANG UNIV
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