Cutting elements formed from ultra hard materials having an enhanced construction
    2.
    发明申请
    Cutting elements formed from ultra hard materials having an enhanced construction 有权
    由具有增强结构的超硬材料形成的切割元件

    公开(公告)号:US20060162969A1

    公开(公告)日:2006-07-27

    申请号:US11043901

    申请日:2005-01-25

    IPC分类号: E21B10/55

    摘要: Cutting elements of this invention include an ultra hard body joined with a metallic substrate. The body includes an uppermost layer comprising a plurality of bonded ultra hard crystals and interstitial regions, and that defines a body working surface. The uppermost layer includes an outer region that is relatively more thermally stable than a remaining portion of the uppermost layer. The body further includes an intermediate layer joined to the uppermost layer, comprising a plurality of bonded ultra hard crystals, and having a wear resistance less than that of the uppermost layer remaining region. The body may additionally include a lowermost PCD layer that is interposed between and attached to the intermediate layer and the substrate.

    摘要翻译: 本发明的切割元件包括与金属基底连接的超硬体。 主体包括最上层,其包括多个结合的超硬晶体和间隙区域,并且限定了主体工作表面。 最上层包括比最上层的剩余部分更热稳定的外部区域。 主体还包括连接到最上层的中间层,包括多个结合的超硬晶体,并且具有小于最上层剩余区域的耐磨性。 主体可以另外包括介于中间层和衬底之间并附着到中间层和衬底之间的最下面的PCD层。