公开(公告)号：US11607841B2

公开(公告)日：2023-03-21

申请号：US17304596

申请日：2021-06-23

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Carsten Franke ,  Maiken Givot ,  Malte Korten ,  Robert L. W. Smithson ,  Brian D. Goers ,  Negus B. Adefris ,  Thomas J. Anderson ,  Brian A. Shukla ,  Michael C. Harper ,  Elizaveta Y. Plotnikov

IPC: B29C64/153 ,  B24D18/00 ,  B33Y10/00 ,  B24D3/06 ,  B24D3/14 ,  B24D5/10 ,  B24D7/10 ,  B24D5/06 ,  B22F10/28 ,  B29C64/393 ,  B33Y30/00 ,  C22C29/12 ,  C22C32/00 ,  B22F10/10 ,  B22F10/73 ,  B22F12/63 ,  B22F12/67 ,  B22F10/32 ,  B22F10/34 ,  B22F10/36 ,  B22F10/366 ,  B22F10/66 ,  B33Y50/02 ,  B33Y80/00

Abstract: A method of forming a vitreous bond abrasive article is presented that includes receiving, by a manufacturing device having one or more processors, a digital object comprising data specifying a plurality of layers of a vitreous bond abrasive article precursor. The vitreous bond abrasive article precursor includes abrasive particles bonded together by a vitreous bond precursor material and an organic compound. The vitreous bond abrasive article precursor further comprises at least one of: at least one tortuous cooling channel extending at least partially through the vitreous bond abrasive article precursor or at least one arcuate cooling channel extending at least partially through the vitreous bond abrasive article precursor. The method also includes generating, with the manufacturing device by an additive manufacturing process, the vitreous bond abrasive article precursor based on the digital object.

公开(公告)号：US20210362297A1

公开(公告)日：2021-11-25

申请号：US17304604

申请日：2021-06-23

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Carsten Franke ,  Maiken Givot ,  Malte Korten ,  Robert L.W. Smithson ,  Brian D. Goers ,  Negus B. Adefris ,  Thomas J. Anderson ,  Brian A. Shukla ,  Michael C. Harper ,  Elizaveta Y. Plotnikov

IPC: B24D3/06 ,  B24D3/14 ,  B24D5/10 ,  B24D7/10 ,  B33Y80/00 ,  B33Y10/00 ,  B33Y70/00 ,  B29C64/153 ,  B24D18/00 ,  B22F10/10 ,  B22F10/00

Abstract: The present disclosure provides methods of making a vitreous bond abrasive article and a metal bond abrasive article. The methods include sequential steps. Step a) includes a subprocess including sequentially: i) depositing a layer of loose powder particles in a confined region; and ii) selectively applying heat via conduction or irradiation, to heat treat an area of the layer of loose powder particles. The loose powder particles include abrasive particles and organic compound particles, as well as vitreous bond precursor particles or metal particles. The layer of loose powder particles has substantially uniform thickness. Step b) includes independently carrying out step a) a number of times to generate an abrasive article preform comprising the bonded powder particles and remaining loose powder particles. Step c) includes separating remaining loose powder particles from the abrasive article preform. Step d) includes heating the abrasive article preform to provide the vitreous bond abrasive article comprising the abrasive particles retained in a vitreous bond material, or to provide the metal bond abrasive article. A method of making a metal bond abrasive optionally includes infusing an abrasive article preform with a molten lower melting metal and solidifying the molten lower melting metal to provide the metal bond abrasive article. The present disclosure further provides a vitreous bond abrasive article precursor and a metal bond abrasive article precursor. Also, methods including receiving, by a manufacturing device having a processor, a digital object specifying data for an abrasive article, and generating the abrasive article with the manufacturing device.

公开(公告)号：US20190264081A1

公开(公告)日：2019-08-29

申请号：US16343892

申请日：2017-10-12

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Aaron K. Nienaber ,  Joseph B. Eckel ,  Thomas J. Anderson ,  Thomas J. Nelson ,  Mark A. Lukowski ,  Louis S. Moren ,  Don V. West

IPC: C09K3/14 ,  C04B35/628 ,  C04B35/111

Abstract: A method of making magnetizable abrasive particles includes: moistening the outer surfaces of ceramic particles with waterglass to provide moistened ceramic particles. Magnetizable particles are contacted with the moistened ceramic particles to provide powder-coated ceramic particles. The powder-coated ceramic particles are heated to at least a temperature sufficient to bond the magnetizable particles of the powder-coated ceramic particles to the respective ceramic particles thereby providing the magnetizable abrasive particles. On a respective basis, each magnetizable abrasive particle comprises a respective ceramic particle having a magnetizable particles bonded thereto.

公开(公告)号：US20190233693A1

公开(公告)日：2019-08-01

申请号：US16320220

申请日：2017-07-31

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Dwight D. Erickson ,  Ian R. Owen ,  Shawn C. Dodds ,  Matthew S. Stay ,  Scott R. Culler ,  John T. Boden ,  William C. Quade ,  Joseph D. Solem ,  Negus B. Adefris ,  Chainika Jangu ,  Thomas J. Anderson ,  Gregory S. Mueller ,  William Blake Kolb

IPC: C09K3/14

CPC classification number: C09K3/1409 ,  C09K3/1436

Abstract: Various embodiments disclosed relate to shaped abrasive particles having sharp tips, methods of making the shaped abrasive particles, methods of abrading a substrate with the shaped abrasive particles, and coated abrasive articles including the shaped abrasive particles. The shaped abrasive particle includes a ceramic, has a polygonal cross-sectional shape along a longitudinal axis of the shaped abrasive particle, and at least one tip of the shaped abrasive particle has a radius of curvature of less than or equal to about 19.2 microns.