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A Method for Determining the Aging Frequency of Ultrasonic Vibration

A technology of excitation frequency and ultrasonic vibration, which is applied in the field of determining the aging excitation frequency of ultrasonic vibration, can solve problems such as the inability to determine the aging excitation frequency of ultrasonic vibration, and achieve the effects of short time consumption, high efficiency and simple process

Inactive Publication Date: 2019-05-03
SHANGHAI MARITIME UNIVERSITY
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  • Abstract
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Problems solved by technology

[0005] In order to solve the problem that the traditional frequency sweeping method cannot determine the aging excitation frequency of ultrasonic vibration, the present invention proposes a method for determining the aging excitation frequency of ultrasonic vibration

Method used

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  • A Method for Determining the Aging Frequency of Ultrasonic Vibration
  • A Method for Determining the Aging Frequency of Ultrasonic Vibration

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Embodiment Construction

[0018] With reference to accompanying drawing, further illustrate the present invention:

[0019] The method for determining the excitation frequency of ultrasonic vibration aging is characterized in that: the average grain size of aging workpiece is obtained by test and analysis; the propagation speed of ultrasonic wave in aging workpiece is determined; excitation frequency.

[0020] The method for determining the aging excitation frequency of ultrasonic vibration is characterized in that: the average grain size of the aging workpiece obtained by test analysis is used as the wavelength λ of the ultrasonic wave, and according to the relationship v= λf, the resonant frequency f of the grain mesoscale is calculated.

[0021] The method for determining the excitation frequency of ultrasonic vibration aging is characterized in that: the larger the average grain size of the aging workpiece, the smaller the resonant frequency of the grain mesoscopic scale, when the excitation frequ...

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Abstract

A method for determining the excitation frequency of ultrasonic vibration ageing is characterized in that the average crystal grain size of an ageing workpiece is obtained through the test and analysis; the propagation speed of ultrasonic waves in the ageing workpiece is determined; the resonance frequency of the mesoscopic scale of crystal grains is determined; and the excitation frequency of theultrasonic vibration ageing is determined. According to the method for determining the excitation frequency of ultrasonic vibration ageing, the determined excitation frequency of the ultrasonic vibration ageing is obtained through deduction and analysis from the resonance angle of the mesoscopic scale of the crystal grains, so that ultrasonic vibration ageing treatment is conducted on the workpiece at the determined excitation frequency, the ideal ultrasonic vibration ageing effect can be obtained, and meanwhile the method for determining the excitation frequency of ultrasonic vibration ageing has the beneficial effects that the process is simple, the consumed time is short, and the efficiency is high.

Description

technical field [0001] The invention relates to the technical field of vibration aging, in particular to a method for determining the excitation frequency of ultrasonic vibration aging. technical background [0002] The vibration aging technology is to make the sum of the internal residual stress of the workpiece and the additional vibration stress exceed the yield limit of the material through vibration, and produce a small amount of plastic deformation inside the material, thereby reducing the residual stress inside the material. Vibration aging technology has the characteristics of good treatment effect, short treatment time, less environmental pollution, low energy consumption, and easy on-site operation. technical possibilities. Therefore, research on vibration aging technology has very important engineering application value, and can provide technical support for the promotion and application of vibration aging technology. [0003] The vibration aging process directl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D10/00
CPCC21D10/00
Inventor 顾邦平周慧胡雄严小兰
Owner SHANGHAI MARITIME UNIVERSITY
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