Vitrified bond super-abrasive grinding wheel

Abstract

There is provided a vitrified bond super-abrasive grinding wheel having a super-abrasive grain layer, wherein the super-abrasive grain layer 6 includes a super-abrasive grain 3 , a pore 5 and a vitrified bond 2 , and in the super-abrasive grain layer 6 , an area ratio of a coarse vitrified bond grain having an area of 30 μm 2 or larger is 10% or less.

1 . A vitrified bond super-abrasive grinding wheel having a super-abrasive grain layer, wherein
 the super-abrasive grain layer includes a super-abrasive grain, a pore and a vitrified bond, and   in the super-abrasive grain layer, an area ratio of a coarse vitrified bond grain having an area of 30 μm 2  or larger is 10% or less.   
     
     
         2 . The vitrified bond super-abrasive grinding wheel according to  claim 1 , wherein
 the super-abrasive grain layer further includes a filler, and includes 5% by volume or more and 20% by volume or less of the vitrified bond, and 50% by volume or more and 70% by volume or less of the pore, with the remainder being the super-abrasive grain and the filler.