Incheon, South Korea
Incheon, South Korea

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Lee D.H.,Chonnam National University | Lee D.H.,KUZCO LBE Co. | Kim Y.B.,Chonnam National University | Mo S.W.,Deerfos Co. | And 4 more authors.
Industrial Ceramics | Year: 2011

We have investigated the influence of coating of the abrasive particles with thermosetting or thermo-plastic resin on the cutting performance or lifetime of the abrasives both by a direct test using a AWJ system and by an indirect test using a sand belt. Our results show that the coated abrasives offer a shorter cutting time, a lower surface roughness of the cutting section, and a longer life time than the conventional abrasives. The impact strength of the coated abrasives has been found to be far higher than that of the conventional abrasives although there is little difference in hardness between the two kinds of abrasives. In addition, SiC abrasives have been found to be superior to Al2O3 abrasives in cutting performance.


Lee D.H.,Kuzco Lbe Co. | Kim Y.B.,Chonnam National University | Mo S.W.,Deerfos Co. | Kim M.H.,Deerfos Co. | Lee C.,Inha University
Journal of the Korean Ceramic Society | Year: 2010

In recent years abrasive water jet (AWJ) has received significant attention as a technology used in the manufacturing industry for cutting materials. In this paper we report the development of a new preparation method of abrasives for water jet by using an air bubbling sedimentation rate control technique. The SiC abrasives prepared by an air bubbling sedimentation rate control technique using latex resin are found to be superior to the conventional abrasives not only in surface roughness uniformity but also in lifetime. The AWJ test results also show that the former has also better impact-resistance and wear-resistance than the latter.


An abrasive article having a multi-directional abrasion protrusion according to an exemplary embodiment of the present invention includes a flexible base substrate, and a plurality of abrasion protrusions integrally molded with the base substrate and having at least three sides forming a triangle, in which a plurality of abrasion protrusions has a directional property by grouping. According to this constitution, loading resistance and durability are excellent, there are no attachment materials attached to an abraded surface in the case where a flat surface is abraded, abrasion can be efficiently and evenly performed in a predetermined shape even though abrasion particles are not enlarged to perform abrasion or abrasion is not repeated several times by using particulates, and abrasion performance can be improved.


An abrasive article having a multi-directional abrasion protrusion (120, 130, 220, 320, 330, 420, 520, 530, 620, 630) according to an exemplary embodiment of the present invention includes a flexible base substrate (110, 210, 310, 410, 510, 610), and a plurality of abrasion protrusions integrally molded with the base substrate and having at least three sides forming a triangle, in which a plurality of abrasion protrusions has a directional property by grouping. According to this constitution, loading resistance and durability are excellent, there are no attachment materials attached to an abraded surface in the case where a flat surface is abraded, abrasion can be efficiently and evenly performed in a predetermined shape even though abrasion particles are not enlarged to perform abrasion or abrasion is not repeated several times by using particulates, and abrasion performance can be improved.


An exemplary embodiment of the present invention provides an eco-friendly abrasion product (100) for a grinder, comprising a base layer (110) formed by performing chemical-resistance processing on at least one face of paper; at leas one reinforcement layer (120) formed on the base layer and weaved using natural textile yarn coated with thermosetting resin; a molding layer (130) disposed on the reinforcement layer and thermally compressed and fixed so that the molding layer has a central depression flat unit configured to have a fixing hole formed therein, an extension unit forwardly protruded from the central flat unit, and an external circumferential unit inclined from a front end to a rear of the extension unit; and an abrasive layer (140) combined on the molding layer, wherein the base layer, the reinforcement layer, the molding layer, and the abrasive layer are sequentially laminated from a rear surface to a front surface.

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