利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

124 条记录 (耗时 0.029 秒)

    Drill bit inserts with variations in thickness of diamond coating
    62.
    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。

    Cutting element with canted design for improved braze contact area
    63.
    发明授权
    Cutting element with canted design for improved braze contact area 失效
    切割元件采用倾斜设计，可提高钎焊接触面积

    公开(公告)号：US06202772B1

    公开(公告)日：2001-03-20

    申请号：US09103824

    申请日：1998-06-24

    申请人： Ronald K. Eyre ,  Madapusi K. Keshavan ,  David Truax

    发明人： Ronald K. Eyre ,  Madapusi K. Keshavan ,  David Truax

    IPC分类号： E21B1062

    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 a ultra hard material layer. 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，在其上形成超硬材料层。 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。

    Drill bit inserts enhanced with polycrystalline diamond
    66.
    发明授权
    Drill bit inserts enhanced with polycrystalline diamond 失效
    钻头刀片增强了多晶金刚石

    公开(公告)号：US5370195A

    公开(公告)日：1994-12-06

    申请号：US123715

    申请日：1993-09-20

    申请人： Madapusi K. Keshavan ,  Monte E. Russell ,  Dah-Ben Liang

    发明人： Madapusi K. Keshavan ,  Monte E. Russell ,  Dah-Ben Liang

    IPC分类号： E21B10/52 ,  E21B10/46 ,  E21B10/56 ,  E21B10/567

    CPC分类号： E21B10/5673

    摘要： A drill bit has means at one end for connecting the bit to a drill string and a plurality of inserts at the other end for crushing the rock to be drilled. The inserts have a cemented tungsten carbide body partially embedded in the drill bit and at least two layers at the protruding drilling portion of the insert. The outermost layer contains polycrystalline diamond and particles of carbide or carbonitride of elements selected from the group consisting of W, Ti, Ta, Cr, Mo, Cb, V, Hf and Zr. The remaining layers adjacent the polycrystalline diamond layer are transition layers each comprising a composite containing diamond crystals, particles of tungsten carbide, and particles of titanium carbonitride. The average size of the diamond particles in the polycrystalline diamond layer is greater than the average size of the carbide or carbonitride particles; and the average size of the diamond particles in the transition layers is greater than the average sizes of the carbide and carbonitride particles. In particular, the transition layers contain particles of carbide and/or carbonitride with average grain sizes of less than one micrometer. The outermost layer of polycrystalline diamond extends along at least a portion of the length of the grip portion of the carbide body embedded in the drill bit.

    摘要翻译： 钻头在一端具有用于将钻头连接到钻柱和在另一端的多个插入件的装置，用于破碎要钻探的岩石。 插入件具有部分地嵌入钻头中的粘结碳化钨体和在插入件的突出钻孔部分处的至少两层。 最外层包含选自W，Ti，Ta，Cr，Mo，Cb，V，Hf和Zr的元素的多晶金刚石和碳化物或碳氮化物的颗粒。 与多晶金刚石层相邻的剩余层是各自包含含有金刚石晶体，碳化钨颗粒和碳氮化钛颗粒的复合物的过渡层。 多晶金刚石层中的金刚石颗粒的平均尺寸大于碳化物或碳氮化物颗粒的平均尺寸; 并且过渡层中的金刚石颗粒的平均尺寸大于碳化物和碳氮化物颗粒的平均尺寸。 特别地，过渡层含有平均晶粒尺寸小于1微米的碳化物和/或碳氮化物颗粒。 多晶金刚石的最外层沿嵌入在钻头中的碳化物体的把持部分的长度的至少一部分延伸。

    Composite cemented carbide
    67.
    发明授权
    Composite cemented carbide 失效
    复合碳化硅

    公开(公告)号：US4966627A

    公开(公告)日：1990-10-30

    申请号：US228099

    申请日：1988-08-04

    申请人： Madapusi K. Keshavan ,  Proserfina C. Rey

    发明人： Madapusi K. Keshavan ,  Proserfina C. Rey

    IPC分类号： B22F1/00 ,  C22C1/05

    CPC分类号： C22C1/051 ,  B22F1/0003

    摘要： A composite material is disclosed along with the method of making the same. The material comprises a tough grade of cemented carbide granule dispersed with a hard brittle grade of cemented carbide granules to form a matrix. The quantity of hard, brittle cemented carbide granules is between 20% to 60% of the total composition. Such material functions to improve wear resistance without sacrificing toughness.

    Abrasion resistant coating and method for producing the same
    68.
    发明授权
    Abrasion resistant coating and method for producing the same 失效
    耐磨涂层及其制造方法

    公开(公告)号：US4588606A

    公开(公告)日：1986-05-13

    申请号：US709901

    申请日：1985-03-08

    申请人： Madapusi K. Keshavan ,  Merle H. Weatherly

    发明人： Madapusi K. Keshavan ,  Merle H. Weatherly

    IPC分类号： C23C4/06 ,  B05D1/08

    CPC分类号： C23C4/06

    摘要： A coating composition applied to a substrate by a thermal spray process which comprises tungsten carbide and a boron-containing alloy or a mixture of alloys with a total composition of from about 6.0 to 18.0 weight percent boron, 0 to 6 weight percent silicon, 0 to 20 weight percent chromium, 0 to 5 weight percent iron and the balance nickel; the tungsten carbide comprising about 78 to 88 weight percent of the entire composition.

    摘要翻译： 涂料组合物通过热喷涂方法施加到基材上，该涂料组合物包括碳化钨和含硼合金或合金的混合物，总组成为约6.0至18.0重量％的硼，0至6重量百分比的硅，0至 20重量％铬，0-5重量％铁和余量镍; 所述碳化钨占整个组合物的约78至88重量％。

    Method of forming surface coatings on cutting elements
    70.
    发明授权
    Method of forming surface coatings on cutting elements 有权
    在切割元件上形成表面涂层的方法

    公开(公告)号：US08414986B2

    公开(公告)日：2013-04-09

    申请号：US12613927

    申请日：2009-11-06

    申请人： Madapusi K. Keshavan

    发明人： Madapusi K. Keshavan

    IPC分类号： H05H1/24

    CPC分类号： E21B10/567 ,  C22C26/00 ,  C23C16/0245 ,  C23C16/0272 ,  C23C16/26 ,  C23C16/44 ,  C23C16/503 ,  C23C16/515 ,  C23C30/005

    摘要： A method of forming a cutting element that includes placing at least one cutting element in an inner surface of at least one hollow tubular member such that at least a portion of the at least one cutting element is exposed; generating plasma within the hollow portion of the tubular; and depositing at least one refractory metal or sp3 carbon-containing coating on an exposed surface of the at least one cutting element is disclosed.

    摘要翻译： 一种形成切割元件的方法，包括将至少一个切割元件放置在至少一个中空管状构件的内表面中，使得所述至少一个切割元件的至少一部分被暴露; 在管的中空部分内产生等离子体; 并且公开了在所述至少一个切割元件的暴露表面上沉积至少一种难熔金属或含sp3碳的涂层。