Abstract
In order to improve the finishing efficiency of traditional plane magnetic abrasive finishing (MAF), we have previously proposed an effective plane MAF process combined with an electrolytic process and developed a special compound machining tool for the electrolytic magnetic abrasive finishing (EMAF). In this research, the EMAF process is divided into two finishing steps. The first finishing step is the EMAF step, and a single MAF step constitutes the second finishing step. The machinability of SUS304 material can be improved through the formation of passive films from the electrolytic process in the EMAF step. Meanwhile, the passive films can be rapidly and easily removed by friction between the magnetic particles and the workpiece-generated mechanical machining force. Thus, the surface finishing efficiency can be greatly improved. Compared with a dedicated MAF machining tool or a dedicated electrolytic machining tool, this special compound machining tool can synchronously achieve MAF and electrolytic processes to make the processing more convenient. This study focuses on exploring mechanical finishing characteristics of the special compound machining tool through MAF experiments. Additionally, EMAF experiments are conducted under the optimal mechanical finishing conditions. The experimental results of the EMAF process show that the surface roughness Ra can be reduced to less than 30 nm at the 4-min EMAF step, and it can be further reduced to 20 nm at the 10-min MAF step.
Highlights
With the development of semiconductor-related and biotechnology-related industries, the demands for surface quality and machining efficiency are becoming higher and higher
This paper mainly reported the investigation of the mechanical finishing characteristics of the electrolytic magnetic compound machining tool and the experimental results of the electrochemical magnetic abrasive finishing (EMAF) process under the condition of the combination of a 4-min EMAF step and a 26-min magnetic abrasive finishing (MAF) step
The main conclusions can be summarized as follows: 1. The mechanical finishing characteristics of the electrolytic magnetic compound machining tool were determined through MAF process experiments and the analysis of the magnetic field strength
Summary
With the development of semiconductor-related and biotechnology-related industries, the demands for surface quality and machining efficiency are becoming higher and higher. In order to improve surface accuracy and polishing efficiency, researchers have optimized and improved the parameters of magnetic abrasive finishing, and dedicated efforts to explore magnetic abrasive finishing combined with a variety of processes. In these MAF compound processing methods, electrolytic/electrochemical magnetic abrasive finishing (EMAF) has been proposed and conducted by a few researchers. A large number of experimental results have indicated that the polishing efficiency of a metal material can be significantly improved through magnetic abrasive finishing combined with the electrolytic process [8,9]. Based on the abovementioned reports, it can be considered that the finishing efficiency of a metal material can be improved by the EMAF process
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