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Metal plate-shaped specimen dynamic hydrogen charging tensile stress corrosion test device

A plate-like sample, tensile stress technology, applied in the direction of measuring devices, using stable tension/pressure testing material strength, instruments, etc., can solve problems such as potential safety hazards, hydrogen overflow, limited hydrogen filling capacity, etc., to achieve high Hydrogen concentration, avoid hydrogen overflow, no safety hazard effect

Pending Publication Date: 2018-04-27
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0018] Aiming at the problems existing in the prior art, the main purpose of the present invention is to provide a dynamic hydrogen-charging tensile stress corrosion test device for metal plate samples, which solves the problems of limited hydrogen charging, potential safety hazards and hydrogen overflow in the prior art.

Method used

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  • Metal plate-shaped specimen dynamic hydrogen charging tensile stress corrosion test device

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Embodiment

[0047] Such as figure 1 As shown, the dynamic electrochemical hydrogen charging test device of this embodiment has a symmetrical structure up and down, including an insulating loading device and an electrochemical hydrogen charging device. (one up and down each), a pair of plate-shaped sample fixtures 6 (one up and down each), a pair of loading nuts 3 (one up and down each), a pair of connecting screws 5 (one up and down each), a plate-shaped sample 9, A section of platinum sheet 10, a DC power supply 11, etc., the specific structure is as follows:

[0048] The upper and lower symmetrical insulating clamps 1 are respectively connected to the stretching machine through the insulating clamp pin holes 2, and the two insulating gaskets 4 are respectively set on the outside of the upper and lower symmetrical connecting screw rods 5, and the two loading nuts 3 are respectively screwed on the upper and lower symmetrical screw rods. On the external thread at one end of the connecting...

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Abstract

Relating to the field of metal hydrogen charging test methods and stress corrosion measurement, the invention in particular relates to a metal plate-shaped specimen dynamic hydrogen charging tensile stress corrosion test device, which is suitable for systems that have high requirements for hydrogen concentration conditions and perform hydrogen charging at the same time of sample loading. The device includes a sample insulation loading apparatus and an electrochemical hydrogen charging apparatus, and is mainly equipped with a set of insulation jigs, a set of plate-shaped specimen jigs, a tensile specimen, a pair of insulation gaskets, a pair of loading nuts, a pair of connecting screw rods, a segment of platinum sheet and a DC power supply. The device is simple in operation, ca realize hydrogen charging at the same time of specimen loading, also can accurately control the hydrogen charging concentration, and is easy for real-time observation of the specimen stress corrosion state. The device provided by the invention has a small overall size, is suitable for promotion and use in laboratories, and also can be widely applied in steel, non-ferrous and other large-scale industrial production, detection analysis and other fields.

Description

technical field [0001] The invention relates to a metal hydrogen charging test method and the field of stress corrosion measurement, in particular to a dynamic hydrogen charging tensile stress corrosion test device for a metal plate sample, which is suitable for charging the sample with high requirements on the hydrogen concentration and loading the sample at the same time. in the hydrogen system. Background technique [0002] Hydrogen in metals is a harmful but difficult to completely avoid impurity element. Hydrogen comes from the atmosphere or hydrogen that enters the interior of the material when serving in a hydrogen-containing environment and the hydrogen produced by the electrochemical cathode reaction process. It is harmful to metals It mainly causes the reduction of metal toughness, and in severe cases, it will lead to the failure of metal forgings. This phenomenon is called hydrogen embrittlement. [0003] Hydrogen embrittlement can be divided into two types accor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N3/04G01N3/02
CPCG01N3/02G01N3/04G01N3/08G01N2203/0423G01N2203/0282G01N2203/024G01N2203/0017
Inventor 周宇赵东杨张波王俭秋柯伟韩恩厚
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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