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    METHODS OF MAKING METAL BOND AND VITREOUS BOND ABRASIVE ARTICLES, AND ABRASIVE ARTICLE PRECURSORS
    3.
    发明申请
    METHODS OF MAKING METAL BOND AND VITREOUS BOND ABRASIVE ARTICLES, AND ABRASIVE ARTICLE PRECURSORS 有权

    公开(公告)号：US20210362297A1

    公开(公告)日：2021-11-25

    申请号：US17304604

    申请日：2021-06-23

    申请人： 3M INNOVATIVE PROPERTIES COMPANY

    发明人： 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分类号： B24D3/06 ,  B24D3/14 ,  B24D5/10 ,  B24D7/10 ,  B33Y80/00 ,  B33Y10/00 ,  B33Y70/00 ,  B29C64/153 ,  B24D18/00 ,  B22F10/10 ,  B22F10/00

    摘要： 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.

    METHOD OF SHAPE SORTING CRUSHED ABRASIVE PARTICLES
    5.
    发明申请
    METHOD OF SHAPE SORTING CRUSHED ABRASIVE PARTICLES 审中-公开

    公开(公告)号：US20180318880A1

    公开(公告)日：2018-11-08

    申请号：US15775554

    申请日：2016-11-08

    申请人： 3M INNOVATIVE PROPERTIES COMPANY

    发明人： Melissa C. Schillo-Armstrong ,  Brian D. Goers ,  Joseph B. Eckel

    IPC分类号： B07B13/02 ,  B07B13/00 ,  B07B13/05

    CPC分类号： B07B13/02 ,  B07B13/003 ,  B07B13/05 ,  B24D18/0072

    摘要： A method of shape sorting abrasive particles involves disposing initial crushed abrasive particles with agitation against the surface of a tool, the surface defining a plurality of shaped cavities having an average aspect ratio of at least 1.2, thereby causing a first portion of the initial crushed abrasive particles to become retained within at least some of the shaped cavities, and causing a second portion of the initial crushed abrasive particles to remain as loose particles on the surface. Substantially all of the shaped cavities contain at most one abrasive particle. The second portion of the initial crushed abrasive particles is separated from the tool. The first portion of the initial crushed abrasive particles is then separated from the tool and isolated as loose sorted crushed abrasive particles. The average aspect ratio of the loose sorted crushed abrasive particles is greater than that of the initial crushed abrasive particles.

    Shaped vitrified abrasive agglomerate, abrasive articles, and method of abrading
    6.
    发明授权
    Shaped vitrified abrasive agglomerate, abrasive articles, and method of abrading 有权

    公开(公告)号：US11607776B2

    公开(公告)日：2023-03-21

    申请号：US16318655

    申请日：2017-07-19

    申请人： 3M INNOVATIVE PROPERTIES COMPANY

    发明人： Mark A. Lukowski ,  Brian D. Goers ,  Negus B. Adefris ,  Scott W. Peterson

    IPC分类号： B24D3/34 ,  B24D3/32 ,  B24D3/00 ,  B24D3/28 ,  B24D3/18 ,  B24D11/00

    摘要： An abrasive agglomerate particle includes fused aluminum oxide mineral bonded in a vitreous matrix. The fused aluminum oxide mineral is present in a range from 70 percent by weight to 95 percent by weight and the vitreous matrix is present at least at five percent by weight, based on the weight of the abrasive agglomerate particle. The fused aluminum oxide mineral has an average particle size of up to 300 micrometers, and the abrasive agglomerate particle has a frusto-pyramidal shape with side walls having a taper angle in a range from 2 to 15 degrees and a dimension of at least 400 micrometers. The abrasive agglomerate particles are useful in abrasive articles. The method includes contacting the workpiece with an abrasive article and moving the workpiece and the abrasive article relative to each other to abrade the workpiece.

    Metal bond abrasive articles and methods of making metal bond abrasive articles
    8.
    发明授权
    Metal bond abrasive articles and methods of making metal bond abrasive articles 有权

    公开(公告)号：US11383350B2

    公开(公告)日：2022-07-12

    申请号：US16478870

    申请日：2018-01-25

    申请人： 3M INNOVATIVE PROPERTIES COMPANY

    发明人： Jean-Luc Rifaut ,  Badri Veeraraghavan ,  Tilo Remhof ,  Brian D. Goers ,  Andreas M. Geldmacher ,  Robert L. W. Smithson ,  Przemyslaw P. Markowicz ,  Johannes Fink

    IPC分类号： B24D3/06 ,  B24D18/00 ,  B22F10/20

    摘要： Metal bond abrasive articles and methods of making metal bond abrasive articles via a focused beam are disclosed. In an aspect, a metal bond abrasive article includes a metallic binder material having abrasive particles retained therein, where the abrasive particles have at least one coating disposed thereon. The coating includes a metal, a metal oxide, a metal carbide, a metal nitride, a metalloid, or combinations thereof, and the at least one coating has an average thickness of 0.5 micrometers or greater. The metal bond abrasive article includes a number of layers directly bonded to each other. Metal bond abrasive articles prepared by the method can include abrasive articles having arcuate or tortuous cooling channels, abrasive segments, abrasive wheels, and rotary dental tools. Further, methods are provided, including receiving, by a manufacturing device having one or more processors, a digital object comprising data specifying a metal bond abrasive article; and generating, with the manufacturing device by an additive manufacturing process, the metal bond abrasive article based on the digital object. A system is also provided, including a display that displays a 3D model of a metal bond abrasive article; and one or more processors that, in response to the 3D model selected by a user, cause a 3D printer to create a physical object of the metal bond abrasive article.

    MAGNETICALLY ASSISTED DISPOSITION OF MAGNETIZABLE ABRASIVE PARTICLES
    9.
    发明申请
    MAGNETICALLY ASSISTED DISPOSITION OF MAGNETIZABLE ABRASIVE PARTICLES 有权

    公开(公告)号：US20210332277A1

    公开(公告)日：2021-10-28

    申请号：US16479738

    申请日：2018-01-10

    申请人： 3M INNOVATIVE PROPERTIES COMPANY

    发明人： Aaron K. Nienaber ,  Joseph B. Eckel ,  Thomas J. Nelson ,  Brian D. Goers ,  Samad Javid ,  Ronald D. Jesme ,  Badri Veeraraghavan ,  Sheryl A. Vanasse

    IPC分类号： C09K3/14 ,  C23C14/35 ,  C23C26/00

    摘要： According to one embodiment, a method can comprise: providing a tool that has a first portion that comprises a first material and a second portion that comprises a second material, wherein the second material differs from the first material and the tool is subject to a magnetic field, and wherein the first material and the second material are provided such that the magnetic field is relatively stronger at and adjacent the first portion relative to the magnetic field at and adjacent the second portion; positioning a surface adjacent to the tool so as to be subject to the magnetic field; and disposing magnetizable abrasive particles on the surface, wherein the magnetizable abrasive particles are attracted to an area on the surface adjacent the first portion where the magnetic field is relatively stronger so as to provide for at least one of a desired orientation, placement and alignment of a majority of the magnetizable abrasive particles on the surface.