Novel vibration aging method

Abstract

The invention discloses a vibration aging method, comprising a computer, a magnetostrictive vibration exciter, an acceleration sensor and a dynamic strain sensor. The vibration aging method is characterized in that the vibration exciter loads on the workpiece and exerts a cyclist exciting force, two sensors are respectively positioned on the easily cracking and deforming area of the workpiece, the sensors are analyzed and different frequency, the corresponding relationship between the dynamic strains and sorting are done by the computer, selecting the frequencies corresponding to the first biggest dynamic strains as the typical vibration, adjusting the working current and time of the vibration exciter, making the vibration exciter to vibrate at the above frequency till the aging is finished. The vibration aging method has the advantages of using the magnetostrictive vibration exciter as a vibration source, regulating the exciting force by the computer, timely responding the vibration variation to meet the dynamic stress, controlling the vibration source to vibrate at the resonation frequency by the computer, timely tuning the output current of the vibration exciter, analyzing and judging the vibration mode and the vibration time of the vibration aging, lively measuring the dynamic stress variation, and outputting the correct remaining stress variation as the prove for the experiment.

Description

technical field [0001] The invention relates to a new method of vibration aging. Vibrating Stress Relief, called "Vibrating Stress Relief" or "VSR" abroad, aims to resonate the processed workpiece through professional vibration aging equipment, and transmit certain vibration energy to all parts of the workpiece through this resonance method , so that microscopic plastic deformation occurs inside the workpiece-the distorted lattice gradually returns to a balanced state. The dislocations are re-slid and pinned, so that the residual stress inside the workpiece can be eliminated and homogenized, finally preventing the deformation and cracking of the workpiece during processing and use, and ensuring the stability of the dimensional accuracy of the workpiece. Background technique [0002] The principle of vibration aging is: by applying a periodic exciting force to the workpiece, vibrating at the resonant frequency of the workpiece, so that the internal tissue of the workpiece ca...

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Problems solved by technology

In addition, the existing vibration aging equipment uses a motor to drive the eccentric block to generate vibration. The adjustment of the exciting force at the resonance frequency is realized by adjusting the eccentricity. The working efficiency of this kind of exciter is low, and real-time adjustment cannot be realized

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