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    • 4. 发明授权
    • Coated abrasive having brittle agglomerates of abrasive grain
    • 具有磨粒的脆性附聚物的涂布磨料
    • US4311489A
    • 1982-01-19
    • US129186
    • 1980-03-10
    • Bernhardt E. Kressner
    • Bernhardt E. Kressner
    • C09K3/14B61L29/08
    • C09K3/1436
    • A coated abrasive product has abrasive particles secured to a flexible backing by maker and size coats, each abrasive particle consisting essentially of an agglomerate of fine abrasive grains having an average diameter less than about 200 microns and an inorganic, brittle, matrix. The volume percent of the matrix solids in each agglomerate is from 45 to 75% of the total solids volume of the agglomerate. The agglomerates have an irregular surface permitting a bond to the maker and size coats which is stronger than the crush strength of the agglomerates to permit gradual wearing down of the agglomerates during grinding by gradual removal of dulled abrasive grains from the agglomerates.
    • 涂覆的磨料产品具有通过制造商和尺寸涂层固定到柔性背衬的磨料颗粒,每个磨料颗粒基本上由平均直径小于约200微米的细磨料颗粒和无机,脆性基质组成。 每个附聚物中的基体固体的体积百分比为附聚物总固体体积的45至75%。 附聚物具有不规则的表面,允许与制造商的粘结和尺寸涂层比凝聚体的压碎强度更强,以允许在研磨期间逐渐从附聚物去除钝化的磨料颗粒逐渐磨损附聚物。