| 摘要 |
PROBLEM TO BE SOLVED: To provide a metal bonded grinding tool capable of efficiently grinding even a work of largest dimensions in high precision and dispensing with the necessity dressing. SOLUTION: The metal bonded grinding tool comprises a metal bonding material wherein abrasives are dispersively supported and pores are dispersed. The volume distribution ratio of pores is 30% or more on those of 25 micrometer or more diameter, and 55% or less on those of less than 12.5 micrometer diameter, and also the volume porosity is 5-12%. Composition of the bonding material are copper 2-30 % by weight, tin 1-40 % by weight, phosphorus 0.2-3 % by weight, and remaining nickel (50% by weight). COPYRIGHT: (C)2004,JPO
|
