公开(公告)号：US4539018A

公开(公告)日：1985-09-03

申请号：US608047

申请日：1984-05-07

申请人： James R. Whanger ,  Ralph Staudenmayer

发明人： James R. Whanger ,  Ralph Staudenmayer

IPC分类号： B24D7/06 ,  B24D18/00 ,  E21B10/56 ,  E21B10/567 ,  B24B1/00

CPC分类号： E21B10/567 ,  B24D18/00 ,  B24D7/06

摘要： A method is shown for fabricating cutter elements for a drill bit, each of the cutter elements being mounted on the drill bit by a mounting stud. A plurality of composite compacts are provided, each of the compacts having an exposed abrasive diamond surface bonded to a carbide substrate portion. The exposed diamond surface is coated with a thin, metal layer, which is relatively easier to grind away in subsequent steps than the diamond surface itself. The coated surface of the compact is then ground to a depth slightly less than the depth of the diamond surface to thereby form a smoothly ground surface for the compact. The smoothly ground surface of the compact is then contacted with a heat sink while the composite compact is brazed to the mounting stud. Each mounting stud so prepared is then affixed to a suitable receiving area provided on the drill bit.

摘要翻译： 示出了用于制造用于钻头的切割器元件的方法，每个切割器元件通过安装螺柱安装在钻头上。 提供多个复合压块，每个压块具有结合到碳化物基板部分的暴露的磨料金刚石表面。 暴露的金刚石表面涂覆有薄的金属层，其在随后的步骤中比金刚石表面本身相对更容易研磨。 然后将压实体的涂覆表面研磨成略小于金刚石表面的深度的深度，从而形成用于压块的平滑的地面。 然后将压实体的平滑地面与散热器接触，同时将复合压块钎焊到安装螺柱上。 然后将如此制备的每个安装螺栓固定到设置在钻头上的合适的接收区域。