A test device and method for simulating the corrosion of steel materials in the environment of deicing agent

A technology for corrosion testing and steel materials, applied in measuring devices, analysis materials, weather resistance/light resistance/corrosion resistance, etc., can solve problems that are simple and cannot be simulated by multiple factors, and achieve reliability assurance, low manufacturing and operating costs, and The effect of simple structure

Active Publication Date: 2020-05-29
ANGANG STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method capable of simulating the corrosion of steel materials in different ambient temperatures and different ice and snow thicknesses in view of the fact that the current corrosion test method for simulating steel materials in the environment of deicing agents is too simple and cannot simulate various factors. Corrosion test method and device for simulating various factors such as different spraying flow rates of deicing agents and different concentrations of deicing agents

Method used

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  • A test device and method for simulating the corrosion of steel materials in the environment of deicing agent
  • A test device and method for simulating the corrosion of steel materials in the environment of deicing agent
  • A test device and method for simulating the corrosion of steel materials in the environment of deicing agent

Examples

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Embodiment 1

[0025] Example 1: The corrosion behavior of common carbon bridge steel Q345qE and weather-resistant bridge steel Q420qENH in the environment of deicing agent was studied by using the patent of the present invention.

[0026] Take 3 parallel samples of each of the two steel types, and the processing size is 100×50×5mm. After milling and grinding machines, the smoothness is above grade 7. After hot alkali washing→deionized water washing→alcohol cleaning→drying, put After entering the desiccator for 12 hours, weigh and record. The sample is suspended on the sample holder 3 by an insulating thin wire, deionized water is injected into the deionized water tank 17, and a concentration of 30% chlorine salt deicing agent is injected into the deicing agent concentrated liquid tank 15, the main switch a is turned on, and the electronic control Knob b of the thermometer sets the temperature to -20°C, sets the total flow adjustment knob c to 0.5Mpa on the control system panel 21, adjusts t...

Embodiment 2

[0031] Example 2: Utilize the patent of the present invention to study the corrosion resistance behavior of weathering steel 09CuPCrNi under different concentrations (15%, 10%, 3.5%) of the same deicing agent, carry out three tests in total, and remove deicing agent during the three tests Mixed solution concentration knob IIe2 concentration setting is different, other parameters are the same, and the operation method is similar to embodiment 1: configure 20% chlorine salt deicing agent to inject deicing agent concentrated solution tank 15, and the electronic temperature controller knob b sets the temperature to - 10°C, on the control system panel 21, set the total flow adjustment knob c to 0.3Mpa, adjust the concentration knob d of the snowmelting agent concentrated solution to set the concentration to 20%, and adjust the concentration knob Ie1 of the snowmelting agent mixed solution to set the concentration to 0% At the same time, adjust the time relay f1 to 30min, adjust the ...

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Abstract

The invention discloses a test method and a test device for simulating corrosion of a steel material under a snow-melting agent environment. The test method and the device are simple in structure, simple and convenient in operation and low in manufacturing and operating cost, and the corrosion process of the steel material under the snow-melting agent environment can be simulated under the laboratory condition. A rotating test sample rack capable of rotating at constant speed is adopted, the number of the developed test samples is large, the test samples are sprayed uniformly and the reliability of test data is guaranteed. Through test parameter and process control, the corrosion test of the steel material under the snow-melting agent environment can be developed and simulated in the laboratory, simulation can be conducted by aiming at various factors (different environment temperature, different ice and snow thickness, different spraying flow of the snow-melting agent and different concentration of the snow-melting agent), a large amount of scientific and reasonable test data can be acquired within short time, and a convenient and rapid method is provided for research on the corrosion and development of the steel material under the snow-melting agent environment.

Description

technical field [0001] The invention relates to a corrosion test method and device, in particular to a corrosion test method and device for simulating iron and steel materials in a deicing agent environment. Background technique [0002] Road ice and snow disasters bring heavy losses to many countries around the world every year. Every year in the cold regions of northern my country and the freezing rain regions of the south, road snow and ice are serious, causing serious traffic congestion and inducing a series of traffic accidents. Snow and ice on roads and bridges are often accompanied by huge economic losses, and reports in this regard are often published. In 2008, the southern provinces of our country used a large amount of deicing agents in order to resist snow disasters, which caused serious damage to major bridges and roads, resulting in indirect economic losses of 100 billion yuan. And indirect losses as high as 1 billion yuan. There are many kinds of deicing age...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N17/00
CPCG01N17/006
Inventor 李琳陈义庆艾芳芳高鹏钟彬肖宇
Owner ANGANG STEEL CO LTD
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