公开(公告)号：US09039797B2

公开(公告)日：2015-05-26

申请号：US13818365

申请日：2011-10-19

Applicant: Dwight D. Erickson

Inventor： Dwight D. Erickson

IPC: C09K3/14 ,  B24D3/06 ,  B24D3/00

CPC classification number: C09K3/1418 ,  B24D3/008

Abstract: A method of making shaped abrasive particles including forming an abrasive flake comprising a plurality of precursor shaped abrasive particles and a frangible support joining the precursor shaped abrasive particles together; transporting the abrasive flake through a rotary kiln to sinter the abrasive flake; and breaking the sintered abrasive flake into individual shaped abrasive particles. The method is useful to make small shaped abrasive particles having insufficient mass to be efficiently individually sintered in a rotary kiln without joining two or more of the shaped abrasive particles together.

Abstract translation: 一种制造成形磨料颗粒的方法，包括形成包括多个前体成形磨料颗粒的研磨片和将前体成形磨料颗粒接合在一起的易碎支承体; 通过回转窑输送研磨片以烧结研磨片; 并将烧结的磨料碎片破碎成单独的成形磨料颗粒。 该方法可用于使不具有质量的小型磨料颗粒在回转窑中有效地单独烧结而不将两种或多种成形磨料颗粒接合在一起。

公开(公告)号：US20120137597A1

公开(公告)日：2012-06-07

申请号：US13397049

申请日：2012-02-15

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

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

IPC: B24D3/00 ,  C09K3/14

CPC classification number: B24D11/001 ,  C09K3/1409 ,  Y10T428/24364 ,  Y10T428/257 ,  Y10T428/2982

Abstract: Abrasive particles comprising shaped abrasive particles each having a sloping sidewall, each of the shaped abrasive particles comprising alpha alumina and having a first face and a second face separated by a thickness, t. The shaped abrasive particles further comprising a draft angle α between the second face and the sloping sidewall, and the draft angle α is between about 95 degrees to about 125 degrees.

Abstract translation: 研磨颗粒包括各自具有倾斜侧壁的成形磨料颗粒，每个成形磨料颗粒包含α氧化铝，并具有第一面和第二面以及厚度t分开。 成形磨料颗粒还包括第二面和倾斜侧壁之间的拔模角α，并且拔模角α在约95度至约125度之间。

公开(公告)号：US08142532B2

公开(公告)日：2012-03-27

申请号：US12337112

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 ,  C09C1/68 ,  C09K3/14

CPC classification number: C09K3/1418 ,  C09K3/1409 ,  Y10T428/24364 ,  Y10T428/24413 ,  Y10T428/257 ,  Y10T428/2982

Abstract: Abrasive particles which are shaped abrasive particles each with an opening is disclosed. The shaped abrasive particles are formed from alpha alumina and have a first face and a second face separated by a thickness t. The opening in each of the shaped abrasive particles can improve grinding performance by reducing the size of a resulting wear flat, can provide a reservoir for grinding aid, and can improve adhesion to a backing in a coated abrasive article.

Abstract translation: 公开了具有各自具有开口的成形磨料颗粒的磨粒。 成形的磨料颗粒由α氧化铝形成，并具有分开厚度t的第一面和第二面。 每个成形磨料颗粒中的开口可以通过减小所得磨损平面的尺寸来提高研磨性能，可以提供用于研磨助剂的储存器，并且可以提高对涂覆的磨料制品中的背衬的粘合性。

公开(公告)号：US08123828B2

公开(公告)日：2012-02-28

申请号：US12337001

申请日：2008-12-17

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

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

IPC: B24B1/00 ,  B24D3/00

CPC classification number: B24D3/00 ,  B01J2/22 ,  C09K3/1409

Abstract: By controlling the process parameters and by using a polymeric production tooling having a plurality of mold cavities, different types of shaped abrasive particles selected from the group consisting of abrasive shards, dish-shaped abrasive particles, and shaped abrasive particles with an opening can be produced from the exact same mold. In one embodiment, the mold comprised a plurality of equilateral triangles and fractured precursor abrasive particles, dish-shaped precursor abrasive particles, or precursor shaped abrasive particles with an opening were produced from the same mold.

Abstract translation: 通过控制工艺参数和通过使用具有多个模具腔的聚合物生产模具，可以生产选自磨料碎片，碟形磨料颗粒和具有开口的成形磨料颗粒组成的组中的不同类型的成形磨料颗粒 从完全相同的模具。 在一个实施例中，模具包括多个等边三角形和断裂的前体磨料颗粒，碟形前体磨料颗粒或具有开口的前体成形磨料颗粒由同一模具制成。

公开(公告)号：US20110314746A1

公开(公告)日：2011-12-29

申请号：US13227924

申请日：2011-09-08

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: C09K3/14 ,  B24D3/00

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 。

公开(公告)号：US06228134B1

公开(公告)日：2001-05-08

申请号：US09064493

申请日：1998-04-22

Applicant: Dwight D. Erickson

Inventor： Dwight D. Erickson

IPC: C09C168

CPC classification number: B24D3/14 ,  B24D18/0054 ,  B28B3/2636 ,  C09K3/1436 ,  Y10T428/2929 ,  Y10T428/2938

Abstract: Alumina-based abrasive material having at least an internal core structure is provided. Preferably, the abrasive material results from co-extrusion of at least two different sols. In some preferred processing, steps to provide multiple internal core structures are conducted.

Abstract translation: 提供了至少具有内部核心结构的基于氧化铝的研磨材料。 优选地，研磨材料由至少两种不同溶胶的共挤出产生。 在一些优选的处理中，进行提供多个内部核心结构的步骤。

公开(公告)号：US5645619A

公开(公告)日：1997-07-08

申请号：US670889

申请日：1996-06-26

Applicant: Dwight D. Erickson ,  Larry D. Monroe ,  Thomas E. Wood ,  David M. Wilson

Inventor： Dwight D. Erickson ,  Larry D. Monroe ,  Thomas E. Wood ,  David M. Wilson

IPC: C04B35/111 ,  C09C1/68

CPC classification number: C04B35/1115 ,  B24D11/00 ,  C09K3/1436

Abstract: A method of making an alpha alumina-based ceramic abrasive grain comprising, on a theoretical oxide basis, Al.sub.2 O.sub.3, Fe.sub.2 O.sub.3, and SiO.sub.2. The abrasive grain has a surface roughness height of greater than about 200 nanometers and a density of greater than about 3.50 g/cm.sup.3. Preferably, the alpha alumina-based ceramic abrasive grain has alpha alumina crystallites having an average crystallite size of less than about 0.5 micrometer (more preferably, less than about 0.3 micrometer). The presence of the SiO.sub.2 in combination with Fe.sub.2 O.sub.3 increases the amount of transgranular fracture of the abrasive grain, reduces the alpha alumina crystallite growth during sintering of the abrasive grain, dilates at least one of the unit cell dimensions of the abrasive grain, and generally improves the grinding performance of the abrasive grain.

Abstract translation: 一种制造基于氧化铝的陶瓷磨粒的方法，其包括在理论氧化物基础上的Al 2 O 3，Fe 2 O 3和SiO 2。 磨粒具有大于约200纳米的表面粗糙度高度和大于约3.50g / cm 3的密度。 优选地，α氧化铝基陶瓷磨粒具有平均微晶尺寸小于约0.5微米（更优选小于约0.3微米）的α氧化铝微晶。 SiO 2与Fe 2 O的组合的存在增加了磨粒的晶粒间断裂的量，减少了磨粒的烧结期间的α氧化铝微晶生长，使磨粒的单元电池尺寸中的至少一个扩大，并且通常改善 研磨性能的磨粒。