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Comprehensive aging treatment method for railway traffic equipment large metal component

A technology for metal components and aging treatment, applied in the field of rail transit equipment testing, to achieve the effect of strong operability, elimination of residual stress, and high elimination efficiency

Active Publication Date: 2017-05-17
ZHUZHOU CSR TIMES ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] In view of this, the purpose of the present invention is to provide a comprehensive aging treatment method for large metal components of rail transit equipment, which can solve the technical problem of quickly and effectively eliminating the residual stress of large metal components

Method used

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  • Comprehensive aging treatment method for railway traffic equipment large metal component
  • Comprehensive aging treatment method for railway traffic equipment large metal component
  • Comprehensive aging treatment method for railway traffic equipment large metal component

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] as attached figure 1 As shown, a specific embodiment of a comprehensive aging treatment method for large metal components of rail transit equipment, comprising the following steps:

[0084] S101: Install the large metal component 1 on the vibration and temperature comprehensive test bench;

[0085] S102: Determine the location of the vibration test control point and response point;

[0086] S103: Conduct a sinusoidal scanning vibration test on the large metal component 1;

[0087] S104: determining the resonance frequency of the large metal component 1;

[0088] S105: Perform comprehensive aging treatment on the large metal component 1 with fixed-frequency sinusoidal vibration at the resonance frequency point and temperature cycle;

[0089] S106: Perform comprehensive aging treatment of broadband random vibration and temperature cycle on the large metal component 1;

[0090] S107: Repeat the above steps S102 to S106 to complete the comprehensive aging treatment of t...

Embodiment 2

[0129] Another specific embodiment of a comprehensive aging treatment method for large metal components of rail transit equipment, comprising the following steps:

[0130] S101: Install the large metal component 1 on the vibration and temperature comprehensive test bench;

[0131] S102: Determine the location of the vibration test control point and response point;

[0132] S103: Conduct a sinusoidal scanning vibration test on the large metal component 1;

[0133] S104: determining the resonance frequency of the large metal component 1;

[0134] S105: Perform comprehensive aging treatment of broadband random vibration and temperature cycle on the large metal component 1;

[0135] S106: Perform comprehensive aging treatment on the large metal component 1 with fixed-frequency sinusoidal vibration at the resonance frequency point and temperature cycle;

[0136] S107: Repeat the above steps S102 to S106 to complete the comprehensive aging treatment of the large metal member 1 in...

Embodiment 3

[0139] Embodiment 3 On the basis of the above-mentioned Embodiment 1 and Embodiment 2, the comprehensive aging treatment of fixed-frequency sinusoidal vibration and temperature cycle at the resonance frequency point, and the temperature cycle aging treatment in the comprehensive aging treatment of broadband random vibration and temperature cycle are replaced by constant Temperature aging treatment. The scheme of constant temperature aging treatment is adopted, for example: during the aging treatment of fixed-frequency sinusoidal vibration at the resonance frequency point or the aging treatment of broadband random vibration, a constant temperature (thermal stress) of 150-200°C is applied to the large metal component 1 at the same time and the set temperature is maintained. The time (usually 60~120min) can also achieve the effect of comprehensive aging of heat and vibration.

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Abstract

The invention discloses a comprehensive aging treatment method for a railway traffic equipment large metal component. The method includes the steps that the large metal component is installed on a vibration and temperature comprehensive test table; the positions of a vibration test control point and a responding point are determined; a sine scanning vibration test is performed on the large metal component; the resonant frequency of the large metal component is determined; resonant frequency point fixed-frequency sine vibration and temperature cycle comprehensive aging treatment or resonant frequency point fixed-frequency sine vibration and constant temperature comprehensive aging treatment is performed on the large metal component; wide band random vibration and temperature cycle comprehensive aging treatment or wide band random vibration and constant temperature comprehensive aging treatment is performed on the large metal component; and the comprehensive aging treatment in the vertical direction, the transverse direction and the longitudinal direction of the large metal component is completed. The comprehensive aging treatment method for the railway traffic equipment large metal component can fast and effectively eliminate the remaining stress of the large metal component.

Description

technical field [0001] The invention relates to the field of rail transit equipment testing, in particular to a thermal and vibration comprehensive aging treatment method applied to large metal components of rail transit equipment. Background technique [0002] With the continuous increase of train speed and axle load, rail transit equipment is also developing towards systematization and integration. For example, the size and quality of core train equipment such as traction converters are becoming larger and larger. The residual stress of the main structure (large metal component) due to welding, cutting and other processes during the manufacturing process has a significant impact on its dimensional accuracy and load capacity, which will cause the component to be in an unstable state, thereby reducing the dimensional stability of the component sex and mechanical properties. Residual stress has many hazards. It has a huge impact on the yield limit, fatigue life, deformation,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D10/00
Inventor 王鹏廖岳汉刘护林黄成余锋刘国涛陈彪
Owner ZHUZHOU CSR TIMES ELECTRIC CO LTD
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