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发明公开
CN107750194A 在HTHP烧结过程中使用纤维及其随后与基底的附接 失效 - 放弃专利权

在HTHP烧结过程中使用纤维及其随后与基底的附接
摘要：
本文公开了一种用于钻头的纤维加强切割元件及其制造方法。多根纤维形成并嵌入PCD台与附接的基底之间。所述纤维增强所述切割元件的热机械完整性及其耐磨耗性，并且还有助于最大程度减少所述PCD台与所述基底之间的粘合的失效。所述纤维可以用陶瓷材料涂覆以帮助在用于形成所述PCD台的HTHP烧结工艺期间承受高温。所述PCD台在HTHP压机循环后沥滤，从而部分地暴露所述纤维。然后通过渗透、热压或烧结工艺将具有部分暴露的纤维的所述PCD台粘合到基底。可以任选地使用粘合剂来增强所述基底与所述PCD台的所述粘合。
摘要（英）：

A fiber-reinforced cutting element for a drill bit and method of manufacturing same is disclosed. A plurality of fibers are formed in and embedded between the PCD table and the attached substrate. Thefibers enhance the thermo-mechanical integrity of the cutting element as well as its wear and abrasion resistance and also help to minimize the failure of the bond between the PCD table and the substrate. The fibers may be coated with a ceramic material to help withstand the high temperatures during the HTHP sintering process used to form the PCD table. The PCD table is leached following the HTHPpress cycle thereby partially exposing the fibers. The PCD table with partially exposed fibers is then bonded to a substrate through an infiltration, hot pressing or sintering process. A binder may optionally be used to enhance the binding of the substrate to the PCD table.

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