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11. 发明授权

US4793828A Abrasive products 失效
标题翻译：磨料制品
公开(公告)号：US4793828A
公开(公告)日：1988-12-27
申请号：US938365
申请日：1986-12-04
申请人： Richard P. Burnand
发明人： Richard P. Burnand
IPC分类号： B24D3/00 , B01J3/06 , B24B53/12 , B24D3/04 , B24D3/06 , B28D1/04 , C09K3/14 , E21B10/48
CPC分类号： C04B35/52 , B01J3/062 , B24B53/12 , B24D3/06 , B28D1/041 , C04B35/6316 , C04B35/645 , C09K3/14 , E21B10/48 , B01J2203/062 , B01J2203/0655 , B01J2203/0685 , C04B2235/3826 , C04B2235/427 , C04B2235/428 , C04B2235/6567 , C04B2235/80 , C04B2235/96
摘要： An abrasive tool having a working portion which includes an abrasive insert which is exposed to high temperatures during manufacture or use of the tool. Examples of such tools are dressing or turning tools and surface set or impregnated drill bits. The tools are characterized by the abrasive insert comprising a mass of diamond particles present in an amount of 80 to 90 percent by volume of the insert and a second phase present in an amount of 10 to 20 percent by volume of the insert, the mass of diamond particles containing substantial diamond-to-diamond bonding to form a coherent skeletal mass and a second phase consisting essentially of silicon, the silicon being in the form of silicon and/or silicon carbide. these abrasive inserts have been found to have substantial strength due, at least in part, to the diamond-to-diamond bonding and to be capable of withstanding temperatures of 1200.degree. C. under a vacuum 10.sup.-4 Torr or better or insert or reducing atmosphere without significant graphitization of the diamond occurring.
摘要翻译：一种具有工作部分的研磨工具，该工作部分包括在制造或使用该工具期间暴露于高温的研磨刀片。这种工具的实例是修整或车削工具和表面固定或浸渍钻头。这些工具的特征在于磨料镶片包含一定量的金刚石颗粒，其量为该嵌入物的80至90％体积百分比，第二相存在量为该体积的10至20体积％含有大量金刚石 - 金刚石结合以形成相干骨架质量的金刚石颗粒和基本上由硅组成的第二相，硅为硅和/或碳化硅的形式。已经发现，这些磨料镶片至少部分地由于至金刚石 - 金刚石结合而具有相当的强度，并且能够在10-4乇或更高的真空下耐受1200℃的温度或者插入或还原气氛没有发生钻石的显着石墨化。

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