| 摘要 |
PURPOSE:To secure an excellently efficient and good surface roughness by performing 'rough polishing' with a composite abrasive grain containing NbC and/or Al2O3 as a hard grain, and then doing 'finish polishing' with another composite abrasive grain containing TiC, SiC and/or WC as the hard grain in succession. CONSTITUTION:At the time of magnetic polishing by means of a composite abrasive grain between a ferromagnetic body and a hard grain, first 'rough polishing' is performed by a composite abrasive grain containing NbC and/or Al2O3 as this hard grain. 'Finish polishing' is carried out by another abrasive grain containing TiC, SiC and/or WC as the hard grain. Thus, a mirror finished surface of excellently efficient and good surface roughness is securable by means of magnetic polishing. |
