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Indoor experimental simulation device for causing corrosion of metallic materials by direct-current stray current

A metal material, stray current technology, used in measuring devices, analytical materials, weather resistance/light resistance/corrosion resistance, etc., can solve problems such as no temperature and humidity control system, corrosion, etc.

Pending Publication Date: 2018-08-24
KUNMING UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of this invention is to provide a new type of indoor simulation experiment device for the corrosion of metal materials caused by DC stray currents, so as to solve the key technical problems of existing devices without temperature and humidity control systems, corrosion monitoring systems and in-situ detection.

Method used

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  • Indoor experimental simulation device for causing corrosion of metallic materials by direct-current stray current

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Embodiment 1

[0028] An indoor experimental simulation device for corrosion of metal materials caused by DC stray current, including a numerical control socket 3, a ground wire 13, a box body 22, a temperature control system, a humidity control system, a corrosion experiment system, an electrochemical test system, a temperature control system and The humidity control system is all fixed on the box body 22, the corrosion experiment system and the electrochemical test system are located inside the box body 22, the socket 3 is located on the box body 22, and the bottom of the box body 22 is provided with a grounding wire 13; in the present embodiment, the box body 22 It is welded by hot-rolled plates, and the outer wall and inner wall are coated with heat-insulating coating to keep the internal temperature of the box body 22 constant. The digital control socket 3 ensures that after the external power supply is disconnected, it can be quickly switched to the generator to keep the experiment goin...

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Abstract

The invention discloses an indoor experimental simulation device for causing corrosion of metallic materials by a direct-current stray current, and belongs to the technical field of metallic materialcorrosion testing. The device comprises a numerical controlled socket, a grounding wire, a box body, a temperature control system, a humidity control system, a corrosion experimental system and an electrochemical testing system, the temperature control system and the humidity control system are fixed on the box body, the corrosion experimental system and the electrochemical testing system are located in the box body, the socket is located on the box body, and the grounding wire is arranged at the bottom of the box body. By means of the indoor experimental simulation device, simulation experiments in which corrosion is generated by the metallic materials under the influences of a stray current under laboratory conditions can be achieved while the corrosion process can be monitored through the electrochemical testing system; the experiments can be conducted under constant-temperature and constant-humidity conditions due to controllable environmental temperature and humidity. In addition,the structure of the device is simple, sample placing and taking are easy, and the production cost is low.

Description

technical field [0001] The invention relates to an indoor experimental simulation device for metal material corrosion caused by DC stray current, belonging to the technical field of metal material corrosion testing. Background technique [0002] Stray current refers to the current flowing into other places due to the leakage of the original normal circuit, which mainly comes from electrified railways, high-voltage transmission lines, cathodic protection systems, etc. The corrosion of metal by stray current corrosion is electrochemical corrosion, and its destructive feature is localized corrosion in the anode area. The principle is the same as the natural corrosion of metals, and both have anodic oxidation process and cathodic reduction process. The area where the current flows out is the anode area, and the area where the current flows in is the cathode area. [0003] Buried pipelines have been in the underground soil environment for a long time, and are corroded by stray c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/00G01N17/02
CPCG01N17/00G01N17/02
Inventor 董鹏覃飞黄锐王珀王强李顺成郭东光柴忠山余大涛惠喜强张英杰屈庆
Owner KUNMING UNIV OF SCI & TECH
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