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2022
Journal Article
Titel
Effect of a Single Particle in Abrasive Waterjet Machining on 42CrMo4 Modifications
Abstract
Waterjet machining is a powerful tool for processing of a variety of materials from ductile to brittle ones. However, it is a complicated machining process to control and predict its results on the workpiece due to the interaction of high dynamic abrasive particles with the workpiece surface and with each other simultaneously. A proper approach to decrease this complication is to investigate the effect of a single particle on the workpiece surface instead of multiple particles with their complex interactions. Therefore, the aim of this study is to understand the mechanism of abrasive waterjet machining by considering the effect of single particles of different abrasives with different attacking angles on two different microstructural conditions of a steel alloy. Here, 42CrMo4 is selected as the workpiece material for its ability to have different modifications from ductile to brittle characteristics. First, the effect of process parameters on the impact characteristics of the waterjet is studied. In the next step, the effect of particle velocity on the workpiece material modification is investigated. Furthermore, the effect of impact angle on the material modification and shape of the generated footprints is explored. Moreover, the effect of kinetic and kinematic properties of abrasive particle on burr formation in the ductile modification of 42CrMo4 is investigated.
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