Drill bit inserts with variations in thickness of diamond coating
    2.
    发明授权
    Drill bit inserts with variations in thickness of diamond coating 有权
    钻头刀片,金刚石涂层厚度变化

    公开(公告)号:US06460636B1

    公开(公告)日:2002-10-08

    申请号:US09465631

    申请日:1999-12-17

    IPC分类号: E21B1046

    摘要: A cutter element for use in a drill bit, comprising a substrate and a cutting layer. The substrate comprises a grip portion and an extension portion, where the grip portion has an insert axis and an extension portion including an interface surface having a first apex. The cutting layer is affixed to the interface surface and has a cutting surface having a second apex. The cutting layer is shaped such that when a plane passing through the first apex and lying parallel to the insert axis and normal to a radius from the insert axis, the plane divides the cutting layer into major and minor portions and the major portion has a major volume that is at least 60 percent of the total volume of said cutting layer. Alternative embodiments of the present invention include variations wherein the first and second apices do not coincide and wherein the interface surface of the substrate is not axisymmetric. Using these variations, cutter elements having sizeable variations in thickness are constructed.

    摘要翻译: 一种用于钻头的切割元件,包括基底和切割层。 基板包括握持部分和延伸部分,其中握持部分具有插入轴线和包括具有第一顶点的界面的延伸部分。 切割层固定在界面表面上并具有具有第二顶点的切割表面。 切割层被成形为使得当平面穿过第一顶点并且平行于插入轴线平行并且平行于插入轴线的半径时,该平面将切割层分成主要和次要部分,并且主要部分具有主要部分 体积为所述切割层的总体积的至少60%。 本发明的替代实施例包括其中第一和第二顶点不重合并且其中基底的界面不是轴对称的变型。 使用这些变型,构造了具有相当大的厚度变化的切割元件。

    Method for forming a polycrystalline layer of ultra hard material
    6.
    发明授权
    Method for forming a polycrystalline layer of ultra hard material 失效
    形成超硬材料多晶层的方法

    公开(公告)号:US5766394A

    公开(公告)日:1998-06-16

    申请号:US568276

    申请日:1995-12-06

    摘要: A polycrystalline diamond layer is bonded to a cemented metal carbide substrate by this process. A layer of dense high shear compaction material including diamond or cubic boron nitride particles is placed adjacent to a metal carbide substrate. The particles of diamond have become rounded instead of angular due to high shear compaction in a multiple roller process. The volatiles in the high shear compaction material are removed and binder decomposed at high temperature, for example, 950.degree. C., leaving residual amorphous carbon or graphite in a layer of ultra hard material particles on the carbide substrate. The substrate and layer assembly is then subjected to a high pressure, high temperature process, thereby sintering the ultra hard particles to each other to form a polycrystalline ultra hard layer bonded to the metal carbide substrate. The layer of high shear compaction material is also characterized by a particle size distribution including larger and smaller particles that are distributed uniformly throughout the layer.

    摘要翻译: 通过该方法将多晶金刚石层结合到胶结金属碳化物基底。 将包括金刚石或立方氮化硼颗粒的致密高剪切压实材料层放置在与金属碳化物基底相邻的位置。 由于多辊工艺中的高剪切压实,金刚石颗粒已经变圆而不是角度。 除去高剪切压实材料中的挥发物,并在高温例如950℃下分解粘合剂,在碳化物基体上留下残留的无定形碳或石墨的超硬材料颗粒层。 然后将基板和层组件进行高压高温处理,从而将超硬颗粒彼此烧结以形成结合到金属碳化物基底的多晶超硬层。 高剪切压实材料层的特征还在于粒度分布包括均匀分布在整个层中的越来越小的颗粒。

    Cutting element
    9.
    发明授权
    Cutting element 失效
    切割元件

    公开(公告)号:US06991049B2

    公开(公告)日:2006-01-31

    申请号:US10079293

    申请日:2002-02-20

    IPC分类号: E21B10/48

    CPC分类号: E21B10/5735

    摘要: The present invention provides a cutting element having a cylindrical body having a canted end face on which is formed an ultra hard material layer and a method of forming the same. One or a plurality of transition layers may be provided between the ultra hard material layer and the cutting element body.

    摘要翻译: 本发明提供一种具有圆筒体的切割元件,其具有倾斜端面,其上形成有超硬材料层及其形成方法。 可以在超硬材料层和切割元件主体之间设置一个或多个过渡层。

    Cutting element with canted interface surface and bit body incorporating the same
    10.
    发明授权
    Cutting element with canted interface surface and bit body incorporating the same 失效
    具有倾斜接口表面的切削元件和结合其的钻头体

    公开(公告)号:US07703560B2

    公开(公告)日:2010-04-27

    申请号:US12217706

    申请日:2008-07-07

    IPC分类号: E21B10/48

    CPC分类号: E21B10/5735

    摘要: The present invention provides a cutting element having a cylindrical body having a canted end face on which is formed an ultra hard material layer and to a bit incorporating such cutting element. One or a plurality of transition layers may be provided between the ultra hard material layer and the cutting element body.

    摘要翻译: 本发明提供一种具有圆筒体的切割元件,该圆筒体具有倾斜端面,其上形成有超硬材料层,以及一个包含该切割元件的钻头。 可以在超硬材料层和切割元件主体之间设置一个或多个过渡层。