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148 条记录 (耗时 0.018 秒)

    Earth-boring bit having shear-cutting heel elements
    42.
    发明公开
    Earth-boring bit having shear-cutting heel elements 失效
    Erdbohrmeissel mit Umfangsscherelementen

    公开(公告)号：EP0747566A1

    公开(公告)日：1996-12-11

    申请号：EP96304207.2

    申请日：1996-06-06

    申请人： BAKER HUGHES INCORPORATED

    发明人： Scott, Danny E. ,  Pessier, Rudolf C.O. ,  Isbell, Matthew R. ,  Besson, Alain ,  Meany, Nigel

    IPC分类号： E21B10/52

    CPC分类号： E21B10/5673 ,  E21B10/52 ,  E21B10/5676 ,  E21B10/5735 ,  E21B17/1092

    摘要： An earth-boring bit has a bit body and at least one cantilevered bearing shaft depending inwardly and downwardly from the bit body. A cutter is mounted for rotation on the bearing shaft and includes a plurality of cutting elements arranged in generally circumferential rows including an outer or heel row of cutting elements. At least one of the cutting elements in the heel row has an outermost surface at least partially formed of super-hard material that defines a cutting edge for shearing engagement with the sidewall of the borehole as the cutters roll and slide over the bottom of the borehole during drilling operations.

    摘要翻译： 钻头具有一个位体，并且至少一个悬臂轴承轴从钻头体向内和向下偏移。 安装有用于在轴承轴上旋转的切割器，并且包括多个切割元件，所述多个切割元件布置成大致圆周的行，包括外部或后排的切割元件。 脚跟行中的至少一个切割元件具有至少部分由超硬材料形成的最外表面，该超硬材料限定用于与钻孔的侧壁剪切接合的切割刃，因为切割器在钻孔底部滚动并滑动 在钻井作业中。

    ROLLING CONE BIT WITH WEAR RESISTANT INSERT
    46.
    发明公开
    ROLLING CONE BIT WITH WEAR RESISTANT INSERT 失效
    KEGELROLLENMEISSEL具有耐磨，切削刀片。

    公开(公告)号：EP0643792A1

    公开(公告)日：1995-03-22

    申请号：EP93914462.0

    申请日：1993-06-02

    申请人： BAKER HUGHES INCORPORATED

    发明人： SCOTT, Danny, E. ,  SMITH, Redd, H. ,  TIBBITTS, Gordan, A.

    IPC分类号： B22F7 ,  E21B10

    CPC分类号： E21B10/567 ,  B22F7/06 ,  E21B10/52 ,  E21B10/56 ,  E21B10/5676 ,  E21B10/62

    摘要： An improved earth-boring bit of the rolling cone variety (65) and an insert (65, 83, 85) for use therein is provided. A superabrasive element is coated with at least one layer of metallic material (219, 221, 223). The superabrasive element then is placed in a receptacle cavity (215) in a pre-formed hard metal jacket (213). The superabrasive element then is brazed or infiltrated to the hard metal jacket. Metallurgical and mechanical bonds between the superabrasive element, the at least one layer of metallic material on superabrasive element, the braze or infiltrant binder material, and the fracture-tough material of the hard metal jacket retain the superabrasive element in the cavity of the hard metal jacket. Improved earth-boring bits according to this embodiment of the present invention provide abrasion-resistant earth-boring bits of the rolling cutter variety. Such improved bits, and the inserts therefor, are formed without resort to high-temperature, high-pressure processes.

    Saw chain cutter link
    47.
    发明公开
    Saw chain cutter link 失效
    锯链切割链接

    公开(公告)号：EP0625416A1

    公开(公告)日：1994-11-23

    申请号：EP94303631.9

    申请日：1994-05-20

    申请人： DE BEERS INDUSTRIAL DIAMOND DIVISION (PROPRIETARY) LIMITED

    发明人： Clark, Ian Eric

    IPC分类号： B28D1/12 ,  B23P15/28

    CPC分类号： E21B10/5676 ,  B23P15/28 ,  B27B33/145 ,  B28D1/041 ,  B28D1/125 ,  E21B10/485

    摘要： A chain saw link or tooth is disclosed. The link or tooth (100) can be connected pivotally to other similar chain saw links to form the chain of a chain saw. The chain saw link has a link body (101) and one or more cutting inserts (106) fastened releasably to the link body. Each cutting insert is provided by a segment of a composite PCD or PCBN compact (10) and has a PCD (polycrystalline diamond) or PCBN (polycrystalline cubic boron nitride) compact carried by a carbide backing. When installed, the PCD or PCBN compact of the insert is exposed in a position to perform a cutting action in use.

    摘要翻译： 公开了链锯链或齿。 链节或齿（100）可以可枢转地连接到其他类似的链锯链节以形成链锯的链条。 链锯连杆具有连杆体（101）和一个或多个可拆卸地固定在连杆体上的切削镶片（106）。 每个切削刀片由复合PCD或PCBN压块（10）的一段提供，并具有由硬质合金背衬承载的PCD（多晶金刚石）或PCBN（多晶立方氮化硼）压块。 安装时，刀片的PCD或PCBN压块将暴露在使用中的切割动作位置。

    Mosaic diamond drag bit cutter having a nonuniform wear pattern
    48.
    发明公开
    Mosaic diamond drag bit cutter having a nonuniform wear pattern 失效
    Mosaik-“Drag-Bit”-Schneide mit ungleichem Verschleissprofil。

    公开(公告)号：EP0554568A2

    公开(公告)日：1993-08-11

    申请号：EP92122088.5

    申请日：1992-12-29

    申请人： BAKER-HUGHES INCORPORATED

    发明人： Tibbitts, Gordon A. ,  Johns, Kenneth

    IPC分类号： E21B10/56 ,  E21B10/46 ,  E21B10/62

    CPC分类号： E21B10/5676 ,  E21B10/46 ,  E21B10/62

    摘要： A cutter for a rotating drag bit which has a cutting face formed from a plurality of polycrystalline diamond compact (PCD) elements (16,18). The elements can be of varying thickness and/or varying hardness to provide a cutting edge having a nonuniform wear pattern. Also provided is a cutter which includes two layers of PCD (56,54) elements. The PCD elements can be of varying thickness and/or hardness to provide a cutter which presents a cutting edge having a wear ratio which varies with cutter wear. Also provided is an impact cutter (116) having a cutting surface (122) formed from one or more layers of PCD elements.

    摘要翻译： 一种用于旋转阻力钻头的切割器，其具有由多个多晶金刚石致密体（PCD）元件（16,18）形成的切割面。 元件可以具有不同的厚度和/或变化的硬度，以提供具有不均匀磨损图案的切割边缘。 还提供了包括两层PCD（56,54）元件的切割器。 PCD元件可以具有不同的厚度和/或硬度，以提供切割器，该切割器具有磨刀率，磨损率随着刀具磨损而变化。 还提供了具有由一层或多层PCD元件形成的切割表面（122）的冲击刀（116）。