Method for modifying metal part by adopting electricity, magnetism and electricity and magnetism coupled pulses

A metal parts, electromagnetic coupling technology, applied in the field of metal parts modification, can solve the problems of safety factor concealment, metal parts damage, inability to completely eliminate the internal stress and microscopic defects of metal parts, etc., to achieve the effect of improving service performance

Active Publication Date: 2019-10-18
WUHAN UNIV OF TECH
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Problems solved by technology

For example, in actual production, most of the parts do not inherit the excellent microstructure and properties of the original metal material. This is because conventional heat treatment technology can modify the material but cannot completely eliminate the internal stress and microscopic defects (such as gas, g

Method used

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  • Method for modifying metal part by adopting electricity, magnetism and electricity and magnetism coupled pulses
  • Method for modifying metal part by adopting electricity, magnetism and electricity and magnetism coupled pulses
  • Method for modifying metal part by adopting electricity, magnetism and electricity and magnetism coupled pulses

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Embodiment Construction

[0014] In order to better understand the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0015] A method for modifying metal parts using electric, magnetic and electromagnetic coupling pulses, comprising the steps of:

[0016] 1) Use electric, magnetic and electromagnetic coupling pulse generators to modify metal parts, apply pulsed electric field and / or pulsed magnetic field to metal parts respectively, and the pulsed electric field current is less than 1000A / mm 2 , the pulsed magnetic field strength is less than 3T;

[0017] 2) During the modification process, when the surface temperature of the metal part increases to 50°C, stop applying the pulse until the surface temperature of the metal part drops to 25±0.5°C, then measure the resistance of the metal part, when the measured resistance value is compared with the modified When the previous original resistance value decreases by more ...

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Abstract

The invention provides a method for modifying a metal part by adopting electricity, magnetism and electricity and magnetism coupled pulses. An electricity, magnetism and coupled pulse treatment technology is used for modifying the service performance of the metal parts, coupling is performed on characteristic points of the metal part through the high energy flow density electricity, magnetism andcoupled pulses, acting on the local portion or the whole portion of the metal part in an energy type of particle flows and in a contact or non-contact manner is achieved, it is achieved that the physical property, the mechanical performance, the friction and abrasion performance, the corrosion resisting performance and the like of the metal part are improved, and the purpose of improving the service performance of the metal part is achieved. Due to the method, stress field distribution in the metal part is adjusted in a targeted manner, and the service performance of the metal part is improved.

Description

technical field [0001] The invention belongs to the technical field of modification of metal parts, and in particular relates to a method for modifying metal parts by using electric, magnetic and electromagnetic coupling pulses. Background technique [0002] The service performance of metal parts is closely related to the shape of metal parts, production process and processing method, and the final organizational state of metal parts (including microstructure and internal stress state, etc.). For example, in actual production, most of the parts do not inherit the excellent microstructure and properties of the original metal material. This is because conventional heat treatment technology can modify the material but cannot completely eliminate the internal stress and microscopic defects (such as gas, grain, etc.) of metal parts. world, etc.), metal parts still have internal stress and a large number of microscopic defects before they are put into use, which causes a potential...

Claims

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Application Information

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IPC IPC(8): C21D1/04
CPCC21D1/04
Inventor 华林孙倩
Owner WUHAN UNIV OF TECH
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