| 摘要 |
PROBLEM TO BE SOLVED: To enable even rough finish polishing by dry barrel polishing by sintering a mixed material of argillaceous particulates, abrasive particles and aluminium hydroxide particulates as a small grain shape. SOLUTION: In dry barrel polishing inorganic media by sintering a mixed material of argillaceous particulates and abrasive particles as a binding material, aluminium hydroxide is added to and mixed in the mixed material. By the aluminium hydroxide, the media can be formed not only as a cutting quality maintenance preferential type and but also can be formed as a wear-tear restraint preferential type by adjusting its adding quantity, but when 5wt.% or more is contained, a shape of the media largely collapses by sintering, and since the media having a desired shape is hardly obtained, it is desirable that 5wt.% or less be contained for a general use. |
