Abstract
Magnetic finishing with gel abrasive (MFGA) performs better than magnetic abrasive finishing (MAF) in terms of polishing efficiency. However, silicone gels are semi-solid polymer gels with deforming properties that are temperature dependent materials, ultimately degrading the polishing efficiency in MFGA significantly. Therefore, this study evaluated the MFGA mechanism to elucidate the properties of silicone gels in order to attain both the finished effect in MFGA and effective gel abrasives to produce a highly efficient polished surface. Cylindrical rods were polished using silicone gels with different plasticity to determine the temperature of abrasive media in the working area. Next, circulating effects of abrasive media were identified to ensure the efficiency in MFGA. Additionally, finding the relation between the concentrations of abrasive media and circulating effect in the working area. Experimental results showed that silicone gels with low plasticity produced high temperature of abrasive media in MFGA, and high temperature of abrasive medium made excellent circulating effect in the working area, inducing high material removal and fine surface roughness.
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