A spring-type tiny particle impact test device

Abstract

The invention relates to an experimental device, in particular to an extension spring type tiny particle impact experimental device, which belongs to the technical field of erosion and wear. The invention can launch a single particle to impact the surface of the target body, and use a high-speed camera to capture the dynamic process of the particle; it can effectively adjust the impact velocity, impact angle and azimuth angle of the particle, realize the controllable research variables, and finally obtain the impact angle, azimuth angle, Effect of impact parameters such as impact velocity on particle rebound behavior and erosion cratering. The experiment found that: the impact angle and azimuth angle of the hard angular particles determine the rotation direction of the particle rebound after the impact, including the front rotation and the back rotation. Different rotation directions correspond to different erosion and wear mechanisms; The impact velocity determines the size of the pit left on the surface of the target body after the impact. The greater the velocity, the larger the pit, and the more serious the erosion and wear caused, but the impact velocity basically does not affect the contour shape of the pit.

Description

technical field [0001] The invention relates to an experimental device, in particular to an extension spring type tiny particle impact experimental device, which belongs to the technical field of erosion and wear. Background technique [0002] Erosion wear refers to the phenomenon or process of material removal caused by the collision of tiny particles in a liquid flow or air flow on a material. As a common wear phenomenon, it widely exists in various industrial fields, and has become one of the important reasons for material damage or equipment failure. The biggest feature of erosion wear is that it has a long incubation period, that is, when the particles hit the target, the material will not be lost at the beginning, and the erosion wear will occur after a period of accumulation. The study of the impact process of a single horn-shaped particle is helpful to understand the mechanism of material removal in the process of erosion and wear. [0003] In China, the erosion ex...

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Problems solved by technology

[0003] In China, the erosion experiment was carried out earlier and progressed faster, such as the China University of Petroleum, the Institute of Metal Research, Chinese Academy of Sciences, etc., but the experimental devices designed focus on the impact process of a large number of particles on the target body. By testing the macroscopic consumption of the target body mass It is not conducive to the study of erosion mechanism to evaluate the erosion wear performance

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