Study on the magnetic abrasive finishing combined with electrolytic process

Investigation on Processing Stability

Abstract

In order to improve processing efficiency of the magnetic abrasive finishing (MAF) process, the magnetic abrasive finishing combined with electrolytic (EMAF) process was proposed and the feasibility was proved in previous study. Because the relation among the flow field (electrolyte), the electric field and the magnetic field is very complicated during the EMAF processing, the processing mechanism that has not been fully explored. In this study, the interaction between the amount of electrolytic iron powder and the electrolytic reactions was preliminarily explored. The stability of the EMAF processing is evaluated by the measured processing current value curve. By observing the status of electrolytic iron powder and comparing the processing results, the factors that affect the processing stability were found out. Through a series of exploratory experiments and analysis, the results show that excessive iron powder will cause unstable processing current and weaken the processing effect of the electrolytic reactions in EMAF Processing. At the same time, the changes of iron powder particle size before and after processing was further observed. The best results were obtained when using the electrolytic iron powder of 330 μm (in mean diameter) and the supply amount of 0.6 g.