公开(公告)号：US20140256238A1

公开(公告)日：2014-09-11

申请号：US14353467

申请日：2012-11-06

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Loc X. Van ,  Thu A. Nguyen

IPC: B24D7/14

CPC classification number: B24D7/14 ,  B24D3/20 ,  B24D5/12 ,  B24D5/14

Abstract: A composite abrasive wheel comprises primary and secondary abrasive portions. The primary abrasive portion comprises shaped ceramic abrasive particles retained in a first organic binder. The secondary abrasive portion is bonded to the primary abrasive portion, and comprises secondary crushed abrasive particles retained in a second organic binder. The primary abrasive portion comprises a larger volume percentage of the shaped ceramic abrasive particles than the secondary abrasive portion. A central aperture extends through the composite abrasive wheel.

Abstract translation: 复合砂轮包括初级和次级磨料部分。 初级研磨部分包括保留在第一有机粘合剂中的成形陶瓷研磨颗粒。 次级研磨部分结合到初级研磨部分，并且包括保留在第二有机粘合剂中的二次破碎的磨料颗粒。 主磨料部分包括比二次磨料部分更大体积百分比的成形陶瓷磨粒。 中心孔延伸穿过复合砂轮。

公开(公告)号：US20190030684A1

公开(公告)日：2019-01-31

申请号：US16077120

申请日：2017-02-27

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Loc X. Van ,  Thu A. Nguyen

IPC: B24D7/14

Abstract: A depressed center grinding wheel comprises an abrasive disc. The abrasive disc comprises a working layer, an intermediate layer, a back layer, and at least two reinforcing scrims. The working layer comprises first abrasive particles retained in a first binder material. The first abrasive particles include from 40 to 100 weight percent of first shaped abrasive particles. The back layer comprises second abrasive particles retained in a second binder material. The second abrasive particles include first crushed abrasive particles and are essentially free of shaped abrasive particles. The intermediate layer is disposed between the working layer and the back layer. The intermediate layer comprises third abrasive particles retained in a third binder material. The third abrasive particles include 25 to 75 weight percent of second shaped abrasive particles.

公开(公告)号：US09321149B2

公开(公告)日：2016-04-26

申请号：US14353467

申请日：2012-11-06

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Loc X. Van ,  Thu A. Nguyen

IPC: B24D7/14 ,  B24D3/20 ,  B24D5/12 ,  B24D5/14

CPC classification number: B24D7/14 ,  B24D3/20 ,  B24D5/12 ,  B24D5/14

Abstract: A composite abrasive wheel comprises primary and secondary abrasive portions. The primary abrasive portion comprises shaped ceramic abrasive particles retained in a first organic binder. The secondary abrasive portion is bonded to the primary abrasive portion, and comprises secondary crushed abrasive particles retained in a second organic binder. The primary abrasive portion comprises a larger volume percentage of the shaped ceramic abrasive particles than the secondary abrasive portion. A central aperture extends through the composite abrasive wheel.

Abstract translation: 复合砂轮包括初级和次级磨料部分。 初级研磨部分包括保留在第一有机粘合剂中的成形陶瓷研磨颗粒。 次级研磨部分结合到初级研磨部分，并且包括保留在第二有机粘合剂中的二次破碎的磨料颗粒。 主磨料部分包括比二次磨料部分更大体积百分比的成形陶瓷磨粒。 中心孔延伸穿过复合砂轮。