Portable metallic material tensile stress etching apparatus and method

A technology of tensile stress and metal materials, which is applied in the field of portable metal material tensile stress corrosion devices, can solve the problems of unsatisfactory multiple application of prestress, timely observation of selective corrosion, large volume, inconvenient movement, etc., and achieve effective Conducive to the analysis of test results, simple operation and convenient loading

Inactive Publication Date: 2009-08-05
BEIHANG UNIV
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  • Application Information

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Problems solved by technology

Due to its large size and inconvenient movement, the current testing machine used for tensile stress corrosion of metal materials has many limitations in practical test applications, and cannot meet the requirements of other testing experiments such as electrochemistry.
Stress corrosion de

Method used

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  • Portable metallic material tensile stress etching apparatus and method
  • Portable metallic material tensile stress etching apparatus and method
  • Portable metallic material tensile stress etching apparatus and method

Examples

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Embodiment Construction

[0018] The portable metal material tensile stress corrosion device of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0019] A portable tensile stress corrosion device for metal materials. This device can not only selectively corrode stress tensile samples, but also test electrochemical parameters under the joint action of stress and corrosion environment, such as figure 1 As shown, the device includes a loading body device 1 and a corrosion test tank 2 . The loading main device 1 is used to fix and stretch the tensile sample 3, such as figure 2 As shown, the loading main body device 1 is a quadrilateral frame structure processed by metal stainless steel materials. The length direction of the frame structure is parallel and coaxially provided with two loading rods 101. One end of the loading rod 101 passes through two loading nuts 102. It is fixed on the frame structure of the loading main body device 1 . The other en...

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Abstract

The invention discloses a device and a method for portable metal material tensile stress corrosion. A tensile sample is fixed on a loading main device through a loading pull rod and loading nuts; tensile force is applied to the tensile test by loading nuts, and then the tensile sample is selectively corroded through a corroding test groove which is in a structure shaped like a Chinese character ri and comprises an upper clapboard, a middle clapboard, a lower clapboard, clamping screws and a corrosion solution barrel; the corrosion solution barrel is fixed between the upper clapboard and the middle clapboard; the upper clapboard is provided with a solution changing hole; the middle clapboard is provided with a corroding hole; the tensile sample clings to the corroding hole and adds force to seal the space between the middle clapboard and the tensile sample through the clamping screws; and the corroding test groove can be also used for electrochemical test. The device and the method for portable metal material tensile stress corrosion have the advantages of convenient use and loading, easy operation, portability, selective corrosion and favorable observation.

Description

technical field [0001] The invention relates to a portable metal material tensile stress corrosion device and a method thereof, in particular to a metal material tensile stress corrosion test and an electrochemical parameter test device under tension and a test method thereof. Background technique [0002] The tensile stress corrosion test device for metal materials is to study the influence of these five factors on the tensile stress corrosion properties of metal materials under the coupling of different solution systems, pH values, temperature, time and stress conditions. And the electrochemical test device under its action. Due to its large size and inconvenient movement, the current testing machine used for tensile stress corrosion of metal materials has many limitations in practical test applications, and cannot meet the requirements of other tests such as electrochemistry. Stress corrosion devices for metal rod materials and simple spring-loaded portable stress corros...

Claims

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Application Information

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IPC IPC(8): G01N17/02G01N3/08
Inventor 刘建华郝雪龙李松梅于美王宗武
Owner BEIHANG UNIV
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