チタン補綴物の研磨に関する研究 : (第3報)バレル研磨  [in Japanese] Polishing of Titanium Prosthetics : (Part 3)Barrel Finishing  [in Japanese]

遠心バレル研磨機を用いてチタン鋳造体のバレル研磨を行い, 研磨量の測定と研磨面性状の検討を行なった.遠心バレル研磨は非常に能率が良く, 短時間でチタン鋳造体の仕上げ研磨が可能であった.粗仕上げ用研磨石を用いると研磨量は大きいが, 試料角部の損耗も大きかった.実用的には通常の機械研磨で中仕上げまで行なってから, 中仕上げ用研磨石と最終仕上げ用研磨石を用いてバレル研磨を行なう方法が, 鋳造体の精度を保ちかつ良好な仕上げ面性状を得るうえで効果的であることが判明した.

Barrel finishing of titanium castings using the centrifugal barrel machine was performed and polishing efficiency and surface texture were examined.Centrifugal barrel finishing was found to be very efficient for polishing and finishing titanium castings in a short time.Barrel finishing with media for coarse finish resulted in a large amount of polishing but also caused wear of the edge of the specimen.Barrel finishing with media for medium and final finishing after the medium finishing, performed using convention rotation grinding wheels, was found to be useful for dental use to obtain a good surface texture while maintaining dimensional fitness.