公开(公告)号：US11673231B2

公开(公告)日：2023-06-13

申请号：US16652532

申请日：2018-09-18

申请人： A.L.M.T. Corp.

发明人： Shuichi Amino ,  Tomohiro Ishizu

IPC分类号： B24D3/14 ,  B24D3/18 ,  B24D3/02 ,  B24D3/04

CPC分类号： B24D3/14

摘要： There is provided a vitrified bond super-abrasive grinding wheel including: a core; and a super-abrasive grain layer provided on the core, wherein the super-abrasive grain layer includes a plurality of super-abrasive grains and a vitrified bond that joins the plurality of super-abrasive grains, and the vitrified bond has a plurality of bond bridges located between the plurality of super-abrasive grains to join the plurality of super-abrasive grains, not less than 80% of the plurality of super-abrasive grains are joined to the super-abrasive grains adjacent thereto by the bond bridges, and not less than 90% of the plurality of bond bridges in a cross section of the super-abrasive grain layer have a thickness equal to or smaller than an average grain size of the super-abrasive grains, and have a length greater than the thickness.