Air flow sand-blasting-type erosive wear testing machine

Abstract

The invention discloses an air flow sand-blasting-type erosive wear testing machine. The air flow sand-blasting-type erosive wear testing machine comprises a high-speed air flow unit, a screw rod charging unit, an erosive testing unit and a purifying and dedusting unit, wherein the high-speed air flow unit and the screw rod charging unit are both communicated with an inlet of the erosive testing unit; the dedusting unit is communicated with an outlet of the erosive testing unit; the screw rod charging unit comprises an electronic scale, a material storage chamber, a charging funnel, a charging screw rod and a screw rod electromotor, wherein the electronic scale is provided with the material storage chamber; the material storage chamber is provided with the charging funnel communicated with the material storage chamber; the charging funnel is provided with the charging screw rod driven by the screw rod electromotor, and the material storage chamber is communicated with a suction spray gun by a charging pipeline; the screw rod electromotor is controlled by a controller. According to the erosive wear testing machine, the air flow impact speed can be up to 0m/s-200m/s by regulating an air exhaust valve and a flow meter. The erosive angle is changed between 0 degree and 90 degrees by a specimen rotary table. The uniform charging can be ensured by means of a screw rod charger.

Description

[0001] technical field [0002] The invention relates to an airflow sandblasting type erosion wear tester, which is a test equipment suitable for the erosion wear test of solid particles. Background technique [0003] Solid particle erosion refers to a phenomenon or process in which high-speed gas carries a large number of solid particles smaller than 1000 μm in size and impacts the material surface at a certain speed and angle, resulting in material loss. An important reason for the failure and scrapping of many machinery and equipment and parts. Therefore, the research on how to prevent the erosion failure of instruments and equipment and the testing of the wear resistance and erosion resistance of products have become the key technologies in the above industrial sectors. [0004] In order to study the erosion wear mechanism of different materials (metals, ceramics, composite materials) to improve the erosion resistance of mechanical parts, many researchers have designed ...

AI Technical Summary

Problems solved by technology

But most of them have their limitations and shortcomings: the erosion speed cannot be adjusted or is not accurate enough, the erosion angle is constant, only one sample can be tested at a time, the feeding is unstable and cannot be precisely controlled, etc.

However, the erosion rate of this erosion test device is not easy to guarantee, the feeding is uneven and the consumption of erosion particles cannot be monitored in real time. Only one sample can be used for erosion test at a time. Although there is a particle recovery drawer, it does not filter the test exhaust gas. , purification

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