ABRASIVE MATERIAL

WIPO Patent Application WO/2018/008551

A1

The purpose of the present invention is to provide an abrasive material which can has relatively high machining efficiency while inhibiting damage to a workpiece caused when the workpiece falls in a groove, etc. The present invention is an abrasive material that comprises a base material, and an abrasive layer stacked on a surface side of the base material, and that is characterized in that: the abrasive layer contains abrasive grains and a binder for the abrasive grains, and includes multiple kinds of abrasive parts which show different abrasion amounts in the Taber abrasion test; a first abrasive part which shows the smallest abrasion amount among the multiple kinds of abrasive parts is surrounded by other abrasive parts; the ratio of the abrasion amounts of the other abrasive parts to the abrasion amount of the first abrasive part is at least 3; and the ratio of the area occupied by all the abrasive parts in the abrasive layer is 15-100% inclusive. The ratio of the area occupied by the first abrasive part in the abrasive layer is preferably 3-16% inclusive. The first abrasive part may contain diamond abrasive grains, and the content of the diamond abrasive grains in the first abrasive part is preferably 1-20 vol% inclusive.

INOUE HIROAKI (JP)
TAKEMURA KOJI (JP)
IWANAGA TOMOKI (JP)
TAKAGI DAISUKE (JP)
SASASHIMA KEISUKE (JP)
TAURA TOSHIKAZU (JP)

PCT/JP2017/024164

January 11, 2018

June 30, 2017

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SPEEDFAM CO LTD (JP)
BANDO CHEMICAL IND (JP)

B24D11/00; B24D3/00; B24D11/04

JP2012523967A	2012-10-11
JPH06312376A	1994-11-08
JPH1058331A	1998-03-03
JPS52124094U	1977-09-21
JP2003071728A	2003-03-12

AMANO Kazunori (JP)

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