| 摘要 |
PURPOSE:To make it possible to inexpensively and largely manufacture an inorganic hard body having a fine lustrous surface by adding a mixture of specific synthetic resin material and a free abrasive grain into liquid such as water or the like to use for finishing the inorganic hard body such as glass or the like. CONSTITUTION:A mixture of free abrasive grains and synthetic resin material having no sharp edge is used as a barrel-finishing medium, and added into liquid such as water or the like, and then used for the barrel-finishing of glass, ceramics and an inorganic hard body such as a crystal without the occurrence of struck or scratched flaw. Thus the inorganic hard body having excellent weight accuracy and a lustrous surface with no the struck or scratched flaw can be inexpensively and largely manufactured. |
