Corrosion experiment and injury evaluation methods of engineering material under wind sand environment

A technology of engineering materials and evaluation methods, which is applied in the direction of analyzing materials, measuring devices, instruments, etc., can solve the problems of inability to effectively simulate the erosion and wear behavior of gas-solid two-phase flow, and achieve accurate and feasible test results, low research costs, and test results. short cycle effect

Inactive Publication Date: 2016-07-06
INNER MONGOLIA UNIV OF TECH
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Problems solved by technology

It has certain technical characteristics and representativeness, but this method can only study the erosion process of liquid single-phase flow or liquid-solid two-phase flow, and cannot effectively simulate the erosion and wear behavior of gas-solid two-phase flow in a sandstorm environment. certain limitations

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  • Corrosion experiment and injury evaluation methods of engineering material under wind sand environment

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Embodiment Construction

[0024] An engineering material erosion experiment in a wind-sand environment, including an experiment system and a method for operating the experiment system, wherein the experiment system includes a wind-sand environment simulation system and an erosion chamber 4, wherein the wind-sand environment simulation system is used to simulate the wind-sand environment, and the erosion The etching chamber 4 is used to fix the experimental specimen 5 .

[0025] Further, the wind and sand environment simulation system includes an air compressor 1, wherein the air compressor 1 is connected with the sandblasting gun 3, and the sandblasting gun 3 is connected with the sand box 2 and shoots the wind and sand in the gun to the test chamber in the erosion chamber. Part 5, wherein an airflow control valve 8 is arranged between the air compressor 1 and the sandblasting gun 3, and a sand volume control valve 9 is arranged between the sandblasting gun and the sand box 2; an anemometer 6 is arrange...

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Abstract

The invention relates to an experiment method and an injury evaluation method of an engineering material and particularly relates to corrosion experiment and injury evaluation methods of the engineering material under a wind sand environment. An experiment system and a method for operating the experiment system are included; the experiment system comprises a wind sand environment simulation system and an erosion room; the injury evaluation method of the engineering material based on a wind sand environment experiment system comprises a weight-loss grading method and a weight-loss rate evaluation method, wherein weight loss is the difference of masses of a test piece before and after an abrasion test, namely deltam=m1-m2; the weight-loss rate is the ratio of the difference of the masses of the test piece before and after the abrasion test to the total mass of sand used in the time period, namely alpha=(deltam / ms*t)*100%=(m1-m2 / ms*t)*100%. The experiment system provided by the invention has the advantages that an actual wind and sand corrosion environment can be really simulated, erosion mechanical parameters are easy to accurately control, a testing period is short and the research cost is low; the experiment and injury evaluation methods explore an erosion abrasion rule and an injury mechanism of the engineering material from macroscopic and microcosmic aspects.

Description

technical field [0001] The invention relates to an engineering material experiment method and a damage evaluation method, in particular to an engineering material erosion experiment and damage evaluation method in a sandstorm environment. Background technique [0002] my country is one of the countries in the world with large desert area, wide distribution and serious desertification hazards. The total desertification area in the country has exceeded 1.74 million square kilometers, accounting for nearly 20% of the country's land area. Wind and sand erosion has become one of the main environmental disasters in northern my country, seriously affecting the safe use of steel structures such as transmission towers and communication towers, highways, viaducts, factories and houses in desert areas. The erosion effect of wind and sand on engineering materials is as follows: under the action of moving air flow, sand particles break away from the surface and move rapidly with the air ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/56
CPCG01N3/567
Inventor 郝贠洪郭健刘艳晨樊金承江南刘永利雅茹罕韩燕
Owner INNER MONGOLIA UNIV OF TECH
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