A compression spring type micro particle impact experiment system

Abstract

The invention relates to an experimental system, in particular to a pressure spring type micro particle impact experimental system, and belongs to the technical field of erosion wear. According to thepressure spring type micro particle impact experimental system, a single particle can be fired to impact the target surface, and a high-speed camera is used for capturing the dynamic process of the particle; and the impact velocity, the impact angle and the azimuth angle of the particle can be effectively adjusted to realize controllable research variables, and finally, the effects of impact parameters such as the impact angle, the azimuth angle and the impact velocity on the particle rebound behavior and an erosion pit are obtained. An experiment finds that the impact angle and the azimuth angle of a hard angular particle determines the rotation direction of rebound of the particle after impact, the rotation direction includes front-spin rotation and rear-spin rotation, and different rotation direction corresponds to different erosion wear mechanism; and the impact velocity of the hard angular particle determines the size of the pit left on the target surface after impact, the largerthe impact velocity is, the larger the pit are, and the more severe erosion wear is, however, the impact velocity basically does not affect the contour shape of the pit.

Description

technical field [0001] The invention relates to an experiment system, in particular to a compression spring type tiny particle impact experiment system, 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 exper...

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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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