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    Layered hardfacing, durable hardfacing for drill bits
    1.
    发明授权
    Layered hardfacing, durable hardfacing for drill bits 失效
    分层硬面，耐用的钻头硬化面

    公开(公告)号：US07373997B2

    公开(公告)日：2008-05-20

    申请号：US11061305

    申请日：2005-02-18

    Applicant: Kumar T. Kembaiyan ,  Madapusi K. Keshavan ,  Alysia C. White ,  Brian A. White

    Inventor： Kumar T. Kembaiyan ,  Madapusi K. Keshavan ,  Alysia C. White ,  Brian A. White

    IPC: E21B10/46 ,  C23C30/00

    CPC classification number: E21B10/54

    Abstract: A drill bit having a bit body having at least one blade thereon, at least one cutter pocket disposed on the at least one blade, at least one cutter disposed in the at least one cutter pocket, hardfacing applied to at least a selected portion of the drill bit is shown and described. The hardfacing includes a first hardfacing layer disposed on the selected portion of the drill bit, a second hardfacing layer disposed on the first hardfacing layer, wherein the first hardfacing layer has a hardness different than a hardness of the second hardfacing layer.

    Abstract translation: 一种具有位于其上的至少一个刀片的钻头体的钻头，设置在所述至少一个刀片上的至少一个切割器凹槽，设置在所述至少一个切割器凹槽中的至少一个切割器，至少施加到所述至少一个刀片的选定部分的硬化面 显示和描述钻头。 表面硬化包括设置在钻头的选定部分上的第一表面硬化层，设置在第一表面硬化层上的第二表面硬化层，其中第一表面硬化层具有与第二表面硬化层的硬度不同的硬度。

    Bit body formed of multiple matrix materials and method for making the same
    3.
    发明授权
    Bit body formed of multiple matrix materials and method for making the same 有权
    由多种矩阵材料形成的位体及其制造方法

    公开(公告)号：US08109177B2

    公开(公告)日：2012-02-07

    申请号：US11250097

    申请日：2005-10-12

    Applicant: Kumar T. Kembaiyan

    Inventor： Kumar T. Kembaiyan

    IPC: B21K5/04

    CPC classification number: E21B10/00 ,  B22F7/06

    Abstract: Drill bit bodies are provided having one portion formed of one composition and a further portion formed of a different composition. The different compositions provide different functional properties to respective portions of the drill bit body. Methods for forming such drill bit bodies are also provided.

    Abstract translation: 设置钻头体，其一部分由一种组合物形成，另一部分由不同组成形成。 不同的组合物为钻头体的各个部分提供不同的功能特性。 还提供了形成这种钻头体的方法。

    High-strength, high-toughness matrix bit bodies
    4.
    发明授权
    High-strength, high-toughness matrix bit bodies 失效
    高强度，高韧性矩阵钻头体

    公开(公告)号：US07661491B2

    公开(公告)日：2010-02-16

    申请号：US11764661

    申请日：2007-06-18

    Applicant: Kumar T. Kembaiyan ,  Thomas W. Oldham

    Inventor： Kumar T. Kembaiyan ,  Thomas W. Oldham

    IPC: C22C29/08 ,  E21B10/10

    CPC classification number: C22C29/08 ,  B22F2005/001 ,  B22F2999/00 ,  C22C1/051 ,  C22C32/0052 ,  E21B10/46 ,  B22F1/0003 ,  C22C29/06 ,  B22F1/0048

    Abstract: A new composition for forming a matrix body which includes spherical sintered tungsten carbide and an infiltration binder including one or more metals or alloys is disclosed. In some embodiments, the composition may include a Group VIIIB metal selected from one of Ni, Co, Fe, and alloys thereof. Moreover, the composition may also include cast tungsten carbide. In addition, the composition may also include carburized tungsten carbide.

    Abstract translation: 公开了一种用于形成基体的新组合物，其包括球形烧结碳化钨和包含一种或多种金属或合金的渗透粘合剂。 在一些实施方案中，组合物可以包括选自Ni，Co，Fe中的一种的ⅧB族金属及其合金。 此外，组合物还可以包括铸造碳化钨。 此外，组合物还可以包括渗碳碳化钨。

    BONDING OF CUTTERS IN DIAMOND DRILL BITS
    5.
    发明申请
    BONDING OF CUTTERS IN DIAMOND DRILL BITS 有权
    切割刀在钻石钻头中的连接

    公开(公告)号：US20100101868A1

    公开(公告)日：2010-04-29

    申请号：US12582212

    申请日：2009-10-20

    Applicant: Saul N. Izaguirre ,  Thomas W. Oldham ,  Kumar T. Kembaiyan ,  Gary R. Chunn ,  Anthony Griffo ,  Robert Denton ,  Brian White

    Inventor： Saul N. Izaguirre ,  Thomas W. Oldham ,  Kumar T. Kembaiyan ,  Gary R. Chunn ,  Anthony Griffo ,  Robert Denton ,  Brian White

    IPC: E21B10/55 ,  E21B10/00 ,  E21B10/42

    CPC classification number: E21B10/567 ,  B22F7/06 ,  B22F7/062 ,  B22F2005/001

    Abstract: A bit body formed of a mixture of matrix material and superabrasive powder and including pockets lined with superabrasive-free matrix material, and a method for forming the same, are provided. The pockets are shaped to receive cutting elements therein. The superabrasive-free matrix material enhances braze strength when a cutting element is brazed to surfaces of the pocket. The method for forming the drill bit body includes providing a mold and displacements. The displacements are coated with a mixture of superabrasive free matrix-material and an organic binder. The mold is packed with a mixture of matrix material and superabrasive powder and the arrangement heated to form a solid drill bit body. When the solid bit body is removed from the mold, pockets are formed by the displacements in the bit body and are lined with the layer of superabrasive-free matrix material. The superabrasive material may be diamond, polycrystalline cubic boron nitride, SiC or TiB2 in exemplary embodiments.

    Abstract translation: 由基体材料和超级磨料粉末的混合物形成的一个体，并且包括衬有超无磨料基质材料的口袋及其形成方法。 口袋被成形为在其中容纳切割元件。 当将切割元件钎焊到袋的表面时，超无磨料基质材料增强了钎焊强度。 用于形成钻头体的方法包括提供模具和位移。 位移用超磨料自由基质材料和有机粘合剂的混合物涂覆。 模具中填充有基体材料和超级磨料粉末的混合物，并将该装置加热形成固体钻头体。 当固体钻头体从模具中取出时，通过钻头体中的位移形成凹坑，并且衬有超级无磨料基体材料层。 在示例性实施例中，超研磨材料可以是金刚石，多晶立方氮化硼，SiC或TiB 2。

    Bonding of cutters in drill bits
    6.
    发明授权
    Bonding of cutters in drill bits 失效
    钻头切割机的接合

    公开(公告)号：US07625521B2

    公开(公告)日：2009-12-01

    申请号：US10455217

    申请日：2003-06-05

    Applicant: Saul N. Izaguirre ,  Thomas W. Oldham ,  Kumar T. Kembaiyan ,  Gary R. Chunn ,  Anthony Griffo ,  Robert Denton ,  Brian White

    Inventor： Saul N. Izaguirre ,  Thomas W. Oldham ,  Kumar T. Kembaiyan ,  Gary R. Chunn ,  Anthony Griffo ,  Robert Denton ,  Brian White

    IPC: C22C32/00 ,  B21K5/02 ,  B21K5/10

    CPC classification number: E21B10/567 ,  B22F7/06 ,  B22F7/062 ,  B22F2005/001

    Abstract: A bit body formed of a mixture of matrix material and superabrasive powder and including pockets lined with superabrasive-free matrix material, and a method for forming the same, are provided. The pockets are shaped to receive cutting elements therein. The superabrasive-free matrix material enhances braze strength when a cutting element is brazed to surfaces of the pocket. The method for forming the drill bit body includes providing a mold and displacements. The displacements are coated with a mixture of superabrasive free matrix-material and an organic binder. The mold is packed with a mixture of matrix material and superabrasive powder and the arrangement heated to form a solid drill bit body. When the solid bit body is removed from the mold, pockets are formed by the displacements in the bit body and are lined with the layer of superabrasive-free matrix material. The superabrasive material may be diamond, polycrystalline cubic boron nitride, SiC or TiB2 in exemplary embodiments.

    Abstract translation: 由基体材料和超级磨料粉末的混合物形成的一个体，并且包括衬有超无磨料基质材料的口袋及其形成方法。 口袋被成形为在其中容纳切割元件。 当将切割元件钎焊到袋的表面时，超无磨料基质材料增强了钎焊强度。 用于形成钻头体的方法包括提供模具和位移。 位移用超磨料自由基质材料和有机粘合剂的混合物涂覆。 模具中填充有基体材料和超级磨料粉末的混合物，并将该装置加热形成固体钻头体。 当固体钻头体从模具中取出时，通过钻头体中的位移形成凹坑，并且衬有超级无磨料基体材料层。 在示例性实施例中，超研磨材料可以是金刚石，多晶立方氮化硼，SiC或TiB 2。

    Layered hardfacing, durable hardfacing for drill bits
    8.
    发明授权
    Layered hardfacing, durable hardfacing for drill bits 有权
    分层硬面，耐用的钻头硬化面

    公开(公告)号：US07770672B2

    公开(公告)日：2010-08-10

    申请号：US12120896

    申请日：2008-05-15

    Applicant: Kumar T. Kembaiyan ,  Madapusi K. Keshavan ,  Alysia C. White ,  Brian A. White

    Inventor： Kumar T. Kembaiyan ,  Madapusi K. Keshavan ,  Alysia C. White ,  Brian A. White

    IPC: E21B10/46 ,  C23C30/00

    CPC classification number: E21B10/54

    Abstract: A drill bit having a bit body having at least one blade thereon, at least one cutter pocket disposed on the at least one blade, at least one cutter disposed in the at least one cutter pocket, hardfacing applied to at least a selected portion of the drill bit is shown and described. The hardfacing includes a first hardfacing layer disposed on the selected portion of the drill bit, a second hardfacing layer disposed on the first hardfacing layer, wherein the first hardfacing layer has a hardness different than a hardness of the second hardfacing layer.

    Abstract translation: 一种具有位于其上的至少一个刀片的钻头体的钻头，设置在所述至少一个刀片上的至少一个切割器凹槽，设置在所述至少一个切割器凹槽中的至少一个切割器，至少施加到所述至少一个刀片的选定部分的硬化面 显示和描述钻头。 表面硬化包括设置在钻头的选定部分上的第一表面硬化层，设置在第一表面硬化层上的第二表面硬化层，其中第一表面硬化层具有与第二表面硬化层的硬度不同的硬度。

    High-strength/high toughness alloy steel drill bit blank
    10.
    发明授权
    High-strength/high toughness alloy steel drill bit blank 失效
    高强度/高韧性合金钢钻头钻头

    公开(公告)号：US07395884B2

    公开(公告)日：2008-07-08

    申请号：US11435413

    申请日：2006-05-16

    Applicant: Kumar T. Kembaiyan ,  Thomas W. Oldham ,  John (Youhe) Zhang

    Inventor： Kumar T. Kembaiyan ,  Thomas W. Oldham ,  John (Youhe) Zhang

    IPC: E21B10/00

    CPC classification number: C22C38/04 ,  C22C38/02 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  E21B10/00 ,  E21B10/42 ,  E21B10/55

    Abstract: Drill bit reinforcing members or blanks of this invention are formed from high-strength steels having a carbon content less than about 0.3 percent by weight, a yield strength of at least 55,000 psi, a tensile strength of at least 80,000 psi, a toughness of at least 40 CVN-L, Ft-lb, and a rate of expansion percentage change less than about 0.0025%/° F. during austenitic to ferritic phase transformation. In one embodiment, such steel comprises in the range of from about 0.1 to 0.3 percent by weight carbon, 0.5 to 1.5 percent by weight manganese, up to about 0.8 percent by weight chromium, 0.05 to 4 percent by weight nickel, and 0.02 to 0.8 percent by weight molybdenum. In another example, such steel comprises in the range of from about 0.1 to 0.3 percent by weight carbon, 0.9 to 1.5 percent by weight manganese, 0.1 to 0.5 percent by weight silicon, and one or more microalloying element selected from the group consisting of vanadium, niobium, titanium, zirconium, aluminum and mixtures thereof.

    Abstract translation: 本发明的钻头加强构件或坯料由碳含量小于约0.3重量％，屈服强度至少为55,000psi，抗拉强度至少为80,000psi的高强度钢形成， 在奥氏体相对铁素体相变期间，至少40CVN-L，Ft-lb，膨胀率变化率小于约0.0025％/°F。 在一个实施方案中，这种钢包含约0.1至0.3重量％的碳，0.5至1.5重量％的锰，至多约0.8重量％的铬，0.05至4重量％的镍和0.02至0.8 钼重量百分比。 在另一个实例中，这种钢包含约0.1至0.3重量％的碳，0.9至1.5重量％的锰，0.1至0.5重量％的硅和一种或多种选自钒的微合金元素 ，铌，钛，锆，铝及其混合物。

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