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Abrasive grain containing a first face without vertices and a second face with vertices

A technology of abrasive grains and base surfaces, which is applied in the direction of abrasives, manufacturing tools, and other chemical processes

Active Publication Date: 2015-04-08
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] However, the abrasive grains known from the prior art have a series of disadvantages
For example, many of the known abrasive grains may not be very space-efficiently disposed on the abrasive substrate
Furthermore, many of the known abrasive grains may not be sufficiently fastened in the binder applied to the abrasive substrate.

Method used

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  • Abrasive grain containing a first face without vertices and a second face with vertices
  • Abrasive grain containing a first face without vertices and a second face with vertices
  • Abrasive grain containing a first face without vertices and a second face with vertices

Examples

Experimental program
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Embodiment Construction

[0324] The abrasive particle 110 shown in the perspective view of Figure Ala comprises a flat circular first face 120 and a square (i.e. polygonal) second face 125 parallel thereto, the first face having a first outer surface. profile 121 , the second surface has a second outer profile 126 . An arcuate peripheral surface 130 is formed between the first surface 120 and the second surface 125 . The lines marked on the peripheral surface 130 indicate the arcuate course of the peripheral surface 130 ; however, the lines are not actual edges of the abrasive grains 110 . Abrasive grain 110 extends entirely between two planes defined by first face 120 and second face 125 .

[0325] The first outer contour 121 has no corners, since the directions of the tangents at the points of the first outer contour 121 run continuously. The absence of corners in the first outer contour 121 contributes to the reliable fastening of the abrasive grains 110 with the primer. Compared to the first ou...

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PUM

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Abstract

The invention relates firstly to an abrasive grain (110) with a surface having at least a first face (120) with a first outline (121), and at least one second face (125) with a second outline (126). The first outline (121) does not contain any vertex, but the second outline (126) contains at least one vertex (127). The abrasive grain (110) may comprise a ceramic material, especially polycrystalline alpha-Al2O3. Additionally disclosed are collectives of abrasive grains (110), methods for producing abrasive grains (110), casting moulds, abrasive articles, methods for producing abrasive articles and methods for grinding a surface.

Description

technical field [0001] The present invention relates to abrasive grains having a defined shape, abrasive grain populations, methods for producing abrasive grains, casting tools, abrasive tools with abrasive grains, methods for producing abrasive tools, and methods for grinding a surface with abrasive tools Methods. Background technique [0002] Abrasive grains of defined shape and size, in particular ceramic abrasive grains, have long been known. [0003] Document US 5,201,916 also discloses planar abrasive grains having, for example, triangular, rectangular or circular shapes. These abrasive grains are manufactured from a dispersant containing particles that can be converted to alpha-alumina and a liquid with a volatile component. The dispersion is cast into a mold having a flat base and a groove whose shape is complementary to the desired shape of the abrasive grain. Next, a part of the volatile constituents is removed, resulting in a semi-finished product with the desi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/14B24D3/14C04B35/111
CPCC04B2235/3206C04B2235/6027C04B35/6261C04B35/1115C09K3/1418C04B2235/94C09K3/1409C04B2235/6567B24D3/14C09K3/1427
Inventor M·奥尔登科特G·海特曼G·林德曼S·芬夫席林P·斯特迪勒A·詹尼T·普勒申格
Owner ROBERT BOSCH GMBH
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