利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

9 条记录 (耗时 0.028 秒)

    Drill bit inserts with variations in thickness of diamond coating
    4.
    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

    申请人： Zhou Yong ,  Suprant J. Huang ,  Nathan R. Anderson ,  J. Daniel Belnap ,  Chris E. Cawthorne ,  Ronald K. Eyre ,  Madapusi K. Keshavan ,  Per I. Nese ,  Michael A. Siracki ,  Gary R. Portwood

    发明人： Zhou Yong ,  Suprant J. Huang ,  Nathan R. Anderson ,  J. Daniel Belnap ,  Chris E. Cawthorne ,  Ronald K. Eyre ,  Madapusi K. Keshavan ,  Per I. Nese ,  Michael A. Siracki ,  Gary R. Portwood

    IPC分类号： E21B1046

    CPC分类号： E21B10/5673 ,  E21B10/56 ,  E21B10/573 ,  E21B10/5735 ,  E21B17/1092

    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

    申请人： Nathan R. Anderson ,  Ronald K. Eyre ,  Madapusi K. Keshavan ,  Ghanshyam Rai

    发明人： Nathan R. Anderson ,  Ronald K. Eyre ,  Madapusi K. Keshavan ,  Ghanshyam Rai

    IPC分类号： B24D3/00 ,  B24D3/06 ,  B24D3/28 ,  B24D18/00 ,  B32B18/00 ,  C04B41/87 ,  C04B41/89 ,  B32B31/26 ,  B22F1/00 ,  B22F3/14

    CPC分类号： B24D18/0009 ,  B24D3/06 ,  B24D3/28 ,  Y10S76/11 ,  Y10S76/12 ,  Y10T156/1067 ,  Y10T156/1075

    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。

    Non-planar interfaces for cutting elements
    8.
    发明授权
    Non-planar interfaces for cutting elements 失效
    用于切割元件的非平面界面

    公开(公告)号：US6041875A

    公开(公告)日：2000-03-28

    申请号：US986200

    申请日：1997-12-05

    申请人： Ghanshyam Rai ,  Ronald K. Eyre ,  Nathan R. Anderson

    发明人： Ghanshyam Rai ,  Ronald K. Eyre ,  Nathan R. Anderson

    IPC分类号： E21B10/56 ,  E21B10/573 ,  E21B10/46

    CPC分类号： E21B10/5735

    摘要： This invention is directed to cutting elements having an ultra hard cutting layer such as polycrystalline diamond or polycrystalline cubic boron nitride bonded on a cemented carbide substrate. The interface between the substrate and the cutting layer of each such cutting element is non-planar. The non-planar interface is designed to enhance the operating life of the cutting element by reducing chipping, spalling, partial fracturing, cracking and/or exfoliation of the ultra hard cutting layer, and by reducing the risk of delamination of the cutting layer from the substrate.

    摘要翻译： 本发明涉及具有超硬切割层的切割元件，例如结合在硬质合金基底上的多晶金刚石或多晶立方氮化硼。 每个这样的切割元件的基底和切割层之间的界面是非平面的。 非平面界面被设计成通过减少超硬切割层的碎裂，剥落，部分压裂，开裂和/或剥离来提高切割元件的使用寿命，并且通过降低切割层从 基质。

    Polycrystalline diamond materials formed from coarse-sized diamond grains
    9.
    发明授权
    Polycrystalline diamond materials formed from coarse-sized diamond grains 有权
    由粗大的金刚石颗粒形​​成的多晶金刚石材料

    公开(公告)号：US06951578B1

    公开(公告)日：2005-10-04

    申请号：US09637092

    申请日：2000-08-10

    申请人： Daniel J. Belnap ,  Nathan R. Anderson ,  Zhigang Fang ,  Anthony Griffo ,  Brian A. White

    发明人： Daniel J. Belnap ,  Nathan R. Anderson ,  Zhigang Fang ,  Anthony Griffo ,  Brian A. White

    IPC分类号： B01J3/06 ,  C22C26/00 ,  E21B10/52 ,  B32B9/00

    CPC分类号： E21B10/52 ,  B01J3/065 ,  B01J2203/062 ,  C22C26/00

    摘要： PCD materials of this invention comprise diamond crystals that are bonded together with a catalyst/binder material. The PCD material is prepared by combining diamond grains with a catalyst/binder material either as a premixture or by infiltration during sintering. The PCD material comprises 15 percent by volume or less diamond grains sized 20 micrometers or less. The diamond grains are pressurized under elevated temperature conditions to form the desired PCD material. PCD materials of this invention can constitute the exclusive material phase of a PCD construction, or can form one or more material phase in a multi-phase material microstructure, wherein the multiple material phase can be arranged in an ordered/oriented or random fashion. PCD materials of this invention display improved properties of impact and fatigue resistance, and functional toughness, when used in complex wear environments, when compared to conventional PCs materials comprising intentionally added fine-sized diamond grains.

    摘要翻译： 本发明的PCD材料包括与催化剂/粘合剂材料结合在一起的金刚石晶体。 通过将金刚石晶粒与催化剂/粘合剂材料组合作为预混合物或通过在烧结期间的渗透来制备PCD材料。 PCD材料包括15微摩尔或更小的15体积％或更少的金刚石颗粒。 金刚石晶粒在高温条件下被加压以形成所需的PCD材料。 本发明的PCD材料可以构成PCD结构的独特材料相，或者可以在多相材料微结构中形成一个或多个材料相，其中多个材料相可以以有序/定向或随机的方式布置。 当与常规的包含有意添加的精细尺寸的金刚石颗粒的材料相比时，本发明的PCD材料在复杂的磨损环境中使用时显示改善的冲击和抗疲劳性能以及功能性韧性。