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    Shaped, fractured abrasive particle, abrasive article using same and method of making
    3.
    发明授权
    Shaped, fractured abrasive particle, abrasive article using same and method of making 有权
    成型，断裂的磨料颗粒，使用其的磨料制品和制造方法

    公开(公告)号：US08034137B2

    公开(公告)日：2011-10-11

    申请号：US12336877

    申请日：2008-12-17

    Applicant: Dwight D. Erickson ,  Scott R. Culler ,  Negus B. Adefris ,  John T. Boden ,  John D. Haas

    Inventor： Dwight D. Erickson ,  Scott R. Culler ,  Negus B. Adefris ,  John T. Boden ,  John D. Haas

    IPC: B24D3/02

    CPC classification number: B24D3/00 ,  B01J2/22 ,  C09K3/1409 ,  Y10T428/24364 ,  Y10T428/24413 ,  Y10T428/2982

    Abstract: Precursor alpha alumina abrasive particles in a mold are subjected to a drying process that cracks or fractures at least a majority of the precursor abrasive particles into at least two pieces thereby producing abrasive shards having a smaller size than the mold cavity from which they were made. The smaller abrasive shards, once formed, could be reassembled like jigsaw puzzle pieces to reproduce the original cavity shape of the mold from which they were made. The cracking or fracturing of the precursor abrasive particles is believed to occur by ensuring that the surface tension of the abrasive dispersion to the walls of the mold is greater than the internal attractive forces of the abrasive dispersion as the abrasive dispersion is dried within the mold cavity.

    Abstract translation: 将模具中的前体α氧化铝磨料颗粒进行干燥处理，使至少大部分前体研磨剂颗粒破裂或破裂成至少两个，从而产生具有比其制造的模具腔更小的尺寸的磨料碎片。 一旦形成的较小的磨料碎片可以像拼图拼图一样重新组装，以再现其制造的模具的原始腔体形状。 认为前体研磨剂颗粒的破裂或断裂是通过确保研磨分散体在模具腔内干燥的情况下，研磨分散体对模具壁的表面张力大于磨料分散体的内吸力而发生的 。

    Agglomerate abrasive grains and methods of making the same
    4.
    发明授权
    Agglomerate abrasive grains and methods of making the same 有权
    聚集磨料颗粒及其制备方法

    公开(公告)号：US07887608B2

    公开(公告)日：2011-02-15

    申请号：US12138498

    申请日：2008-06-13

    Applicant: Mark G. Schwabel ,  Dwight D. Erickson

    Inventor： Mark G. Schwabel ,  Dwight D. Erickson

    IPC: B24D3/02

    CPC classification number: B24D3/16 ,  B24D11/001 ,  B24D18/00 ,  C09K3/1436 ,  Y10T428/29 ,  Y10T428/2933 ,  Y10T428/2938 ,  Y10T428/2956 ,  Y10T428/2993

    Abstract: An abrasive agglomerate includes a plurality of abrasive grains bonded together in a three-dimensional structure by a substantially continuous, non-porous inorganic binder, wherein the abrasive grains have an average size of between about 0.5 microns and about 1500 microns, the inorganic binder is less than about 75 percent, by weight, of the abrasive agglomerate, and the bulk density of the abrasive agglomerate is less than about 90 percent of the bulk density of the abrasive grains.

    Abstract translation: 磨料团聚体包括通过基本连续的无孔无机粘合剂以三维结构结合在一起的多个磨料颗粒，其中磨料颗粒的平均尺寸为约0.5微米至约1500微米，无机粘合剂为 小于约75重量％的磨料附聚物，并且磨料团块的堆积密度小于磨粒的堆积密度的约90％。

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