High temperature abrasive particle wear-out detecting device and method

Abstract

A test device of high temperature wear-out consists of resistance furnace and grinding box set in resistance furnace. It is featured as setting test piece and grinding sand in said box, lay load block above test piece, acting ball form test piece driven by rotary-agitation shifting fork with grinding sand in grinding box, evaluating anticorrosion ability of coat layer on test price by calculating weight loss at surface unit area of test piece.

Description

technical field [0001] The invention relates to a high-temperature abrasive wear testing device and method, which uses the principle of the joint action of abrasive wear and high-temperature oxidation to measure the high-temperature abrasion-resistant performance of a coating, and belongs to the technical field of material wear, corrosion and protection. Background technique [0002] The abrasion and protection of materials has always been the focus of research. In the industrial fields of metallurgy, electric power, mining, building materials and chemical industry, due to the wear and corrosion of materials, huge waste and losses will be caused every year, and even equipment damage and personnel casualties will be caused. Therefore, improving the wear resistance of materials has become a problem that people pay close attention to and urgently needs to be solved. [0003] There are many ways to improve the wear resistance of materials. Among them, the use of thermal sprayin...

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Problems solved by technology

But this method has the following disadvantages: 1) the tested piece is a cuboid, and only one of the six surfaces is a test surface sprayed with a coating, while other surfaces will increase in weight due to high temperature oxidation, which affects the accuracy of the test results 2) In order to reduce the measurement error, this method will carry out surface aluminizing treatment to the six surfaces of the cuboid sample before the test, so the preparation of the sample is more complicated; 3) The volume of the resistance furnace is not large , there is no outlet for the abrasive entering the resistance furnace, so the measurement time is too short, only 15 minutes, which is not only different from the actual abrasive working conditions, but also affects the accuracy of the measurement results; 4) The accuracy of the measurement results is still low. Depends on the flow rate and flow velocity of the impact sample abrasive, there are still some problems in the stability of the abrasive flow and flow velocity of this method; 5) The scattering produced by the abrasive abrasive moving at high speed in the test will also interfere with the non-test surface of the cuboid sample. Collisions will also affect the accuracy of the measurement results

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