| 摘要 |
PROBLEM TO BE SOLVED: To provide a polishing material particle having variation of a grain diameter smaller than that of a conventional particle even though the particle diameter is relatively large, and to provide a method for manufacturing the polishing material particle and a polishing and cutting work tool using the polishing material particle.SOLUTION: A polishing material particle having small variation of a grain diameter is obtained by using a plate sieve where a polygonal shape hole is formed on plate material, to select granularity of a polishing material particle. |
