Structured abrasive articles and methods of using the same
A kind of abrasive products, structuring technology, applied in the direction of chemical instruments and methods, abrasives, grinding devices, etc., can solve problems such as deformity, reduce the reliability of grinding performance or manufacturing output of structured abrasive products, and achieve the goal of improving manufacturing output Effect
Active Publication Date: 2016-06-29
3M INNOVATIVE PROPERTIES CO
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Problems solved by technology
However, in practice, problems filling mold cavities in production tooling can lead to misshapen sharp points, thereby reducing the reliability of the abrasive performance or manufacturing yield of the resulting structured abrasive article.
Method used
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Embodiment 1
[0157] A structured abrasive article was prepared by sequentially mixing 23.8 parts of SR351, 0.54 parts of DSP, 1.47 parts of A174, 0.81 parts of PI, 2.9 parts of OX50, and 70.5 parts of WA2500 and agitating with a high shear mixer. have notches to provide a series of shaped abrasive composites (typically like Figure 2A and Figure 2B The polypropylene tooling (formed as precisely shaped abrasive composites shown) had a pitch of 5.8 mils (0.1472 mm). Each molded cavity opening (corresponding to the base) is 4.0 mils by 4.0 mils (0.1027mm by 0.1027mm) and each wall rises to a height of 3.3 mils (0.0831mm) above the base at an angle of 82 degrees . The top surface of each shaped abrasive composite has two orthogonal v-shaped notches (providing edge points in the abrasive composites) centered at right angles from corner to corner at both ends of the top surface, each 0.75 in. mil (0.019mm) and notched at 110 degrees. The abrasive slurry was spread (using a putty knife) into...
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Abstract
Structured abrasive articles include a backing and shaped abrasive composites secured to the backing. The shaped abrasive composites include abrasive grits dispersed in a binder matrix. The shaped abrasive composites include a bottom surface and a top surface opposite and not contacting the bottom surface, and at least three sidewalls abutting both the bottom and top surfaces and two other sidewalls. In one embodiment, at least two cusps are formed by the top surface and individual sidewalls. In another embodiment, the top surface includes at least two triangular facets that contact at least two respective sidewalls and at least two cusps. The top surface includes at least one interior recessed portion nearer the cusps than the bottom surface. Methods of abrading a workpiece using the structured abrasive article are also disclosed.
Description
technical field [0001] The present disclosure broadly relates to coated abrasive articles and methods of using them. Background technique [0002] A structured abrasive article is a specific type of coated abrasive article that has a plurality of shaped abrasive composites secured to a major surface of a backing. Each shaped abrasive composite has a bottom surface in contact with the backing and a distal end extending outwardly from the backing. Shaped abrasive composites include abrasive particles dispersed in a bond matrix that typically includes a crosslinked organic polymer. The shaped abrasive composites are typically arranged in an array. In one common configuration of structured abrasive articles, the shaped abrasive composites are conical (eg, tetrahedral or regular pyramidal). [0003] Traditionally, structured abrasive products such as those available from 3M Company, (St. Paul, Minnesota) as, for example, TRIZACT STRUCTURED ABRASIVE have utilized tapered abrasi...
Claims
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IPC IPC(8): B24D3/02
CPCB24D11/00B24D2203/00B24D7/06C09K3/1409C09K3/1436B24D7/18B24D18/0009B24D3/00B24D11/001B24D11/02B24D3/02
Inventor 约翰·D·哈斯尼格斯·B·艾德弗里斯斯科特·R·卡勒
Owner 3M INNOVATIVE PROPERTIES CO