Portable metallic material tensile stress etching apparatus and method

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...

AI Technical Summary

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 devices for metal rod materials and simple equipment for portable stress corrosion using spring loading have been developed in China, which cannot meet the requirements of multiple prestressing, selective corrosion, timely observation, repeated use, easy disassembly, and accurate measurement

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