Portable metal material tensile stress electrochemical corrosion device

Abstract

The invention discloses a metal material tensile stress electrochemical corrosion liquid tank device and a method thereof. A corrosion test tank is a coverless transparent cuboid-shaped acrylic expandable box body, and a corrosion test tank is a coverless transparent cuboid-shaped acrylic expandable box body, and is connected with the top of a clamp by screws. Samples with different gauge lengthscan be immersed by adjusting the height of a liquid tank through the sliding between a sleeve shell and the liquid tank, the bottom end of the liquid tank is provided with a hole groove, and a fittingis cooperated to carry out stress corrosion experiments on samples with different shapes. In addition, every box body is provided with a corrosion liquid injection hole and an output hole to achievedynamic change of the corrosive environment. The novel corrosion liquid tank device and the method thereof have the advantages of realization of the in-situ electrochemical and tensile property detection of tensile samples with different shapes and different sizes under stress, erosion and corrosion coupled action, convenience in disassembling and assembling, easiness in cleaning, quickness and accurateness in providing a test result, elimination of the limitation of the sizes of the samples, reduction of the process re-optimization cost, and increase of the production efficiency.

Description

technical field [0001] The patent of the present invention relates to a metal tensile stress electrochemical corrosion liquid tank experimental device for studying the stress corrosion resistance of materials in natural or specific environments. Background technique [0002] Stress corrosion refers to the damage caused by the metal in a specific corrosive medium under the action of tensile stress. Stress corrosion research is an important field of safety and reliability research. At present, there are three commonly used methods to study stress corrosion: constant deformation stress corrosion test method, constant load stress (including smooth specimen and notched specimen) corrosion test method and prefabricated crack specimen stress corrosion test method. Among them, the constant deformation stress corrosion test method and the prefabricated crack specimen stress corrosion test method can be completed without equipment, while the constant load smooth tensile stress corros...

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Problems solved by technology

[0005] In existing patents, CN101498649A (portable metal material tensile stress corrosion device and method thereof), its disadvantage is that it is limited to sheet-like tensile samples, the corrosion area is relatively small, and the electrochemical part is not perfect enough, CN104007058A (a Portable metal wire tensile stress corrosion experimental device) relates to the preparation method of stress corrosion electrochemical device, which is only applicable to wire tensile

In addition, CN2593182Y (portable tensile stress corrosion test device) involves the manufacture of stress corrosion tensile equipment and adds springs to replace the levers and weights in the original laboratory. It does not involve electrochemical devices, and the crack monitoring device cannot accurately detect tension. Tensile specimen fracture

Existing equipment is only suitable for tensile stress corrosion that does not involve electrochemical devices, or the shape of tensile samples is relatively limited, and the performance is not perfect

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