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发明授权
CN104727752B 一种聚晶金刚石复合齿及其制造方法和一种钻头 有权

一种聚晶金刚石复合齿及其制造方法和一种钻头
摘要：
本发明提出了一种聚晶金刚石复合齿，包括硬质合金基体和聚晶金刚石层；硬质合金基体一端为安装部，另一端为工作部；聚晶金刚石层形成于工作部的外表面上，且聚晶金刚石层呈圆锥形结构；其通过在工作部的外表面形成圆锥形的聚晶金刚石层，提高了聚晶金刚石复合齿在工作时吃入地层的能力，从而实现了犁切方式进行破岩，有效地提高了破岩效率；本发明还提供一种聚晶金刚石复合齿的制造方法，用于制造上述聚晶金刚石复合齿；本发明再提供一种钻头，其采用上述聚晶金刚石复合齿，有效地提高了破岩效率。
摘要（英）：

The invention provides a polycrystalline diamond composite tooth. The polycrystalline diamond composite tooth comprises a hard alloy base body and a polycrystalline diamond layer, wherein one end of the hard alloy base body is provided with a mounting part and the other end of the hard alloy base body is provided with a working part; the polycrystalline diamond layer is formed on the outer surface of the working part, and the polycrystalline diamond layer is in a conical structure. The conical polycrystalline diamond layer is formed on the outer surface of the working part, and the capability of entering the stratum when the polycrystalline diamond composite tooth works is improved, so that rocks are broken in a plough cutting manner and the rock crushing efficiency is effectively improved; a manufacturing method of the polycrystalline diamond composite tooth, provided by the invention is used for manufacturing the polycrystalline diamond composite tooth; a drill bit provided by the invention adopts the polycrystalline diamond composite tooth so that the rock breaking efficiency is effectively improved.

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