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Coated Abrasive Article for Metal Finishing Disclosure Number: IPCOM000220031D
Publication Date: 2012-Jul-18
Document File: 1 page(s) / 8K

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A coated abrasive article for finishing of metal parts is described. It has been found that the coating of abrasive grains in conjunction with abrasive agglomerate particles can increase the cut rate and life of coated abrasive articles in some metal finishing applications.

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Coated Abrasive Article for Metal Finishing

    Coated abrasive articles are often used for grinding and finishing metal parts such as cylindrical bars and tubes. It is desired to produce cost effective abrasive articles that will provide high cutting ability and even longer life. The coating of abrasive agglomerate particles onto conventional backings is well known in order to produce consistent cutting, long lasting flexible abrasive articles for these applications. Typically the agglomerate particles are gravity drop coated onto a wet layer of resin commonly referred to as the make coat. The make coat is then dried and partially cured before the addition of a second resin coating referred to as the size coat. It has been found that for some applications in order to achieve high cut rate and long life it is desirable to incorporate high loadings of abrasive grain on the backing. One approach to achieve high loadings of abrasive grain is to coat a heavy layer of abrasive agglomerates. However, because of the spacing required for each additional agglomerate particle, the amount of agglomerates that can be coated on the backing is limited. Another approach to achieve a high level of abrasive is to add abrasive grain to the size coat. We have discovered a third approach to achieve high mineral loadings. After the abrasive agglomerates are gravity drop coated onto the make coat, electrostatic coating is used to coat abrasive grains around the agglomerate particles. Abr...