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    CUTTING INSERTS FOR EARTH-BORING BITS
    52.
    发明申请
    CUTTING INSERTS FOR EARTH-BORING BITS 有权
    切割钻头

    公开(公告)号：US20130075165A1

    公开(公告)日：2013-03-28

    申请号：US13598744

    申请日：2012-08-30

    Applicant: Heath C. Coleman ,  Prakash K. Mirchandani

    Inventor： Heath C. Coleman ,  Prakash K. Mirchandani

    IPC: E21B10/08

    CPC classification number: C22C29/08 ,  B22F2005/001 ,  C22C29/005 ,  E21B10/56

    Abstract: A cutting insert for an earth-boring bit comprises a cemented carbide material. The cemented carbide material comprises a plurality of tungsten carbide grains, and a plurality of cubic carbide grains comprising at least one of titanium carbide, vanadium carbide, zirconium carbide, hafnium carbide, niobium carbide, tantalum carbide, mixtures thereof, and solid solutions thereof. The cemented carbide material also comprises a binder including at least one of cobalt, a cobalt alloy, nickel, a nickel alloy, iron, and an iron alloy. Embodiments of the cutting inserts are suitable for use on, for example, rotary cone earth-boring bits and fixed cutter earth-boring bits. A hybrid cemented carbide material comprising first regions of cemented carbide based on tungsten carbide and cobalt, dispersed in a continuous region of cemented carbide material comprising cubic carbides also is disclosed and is useful in cutting inserts of earth-boring bits.

    Abstract translation: 用于钻头的切削刀片包括硬质合金材料。 硬质合金材料包括多个碳化钨颗粒，以及包含碳化钛，碳化钒，碳化锆，碳化铪，碳化铌，碳化钽，其混合物和其固体溶液中的至少一种的多个立方晶碳颗粒。 硬质合金材料还包括包含钴，钴合金，镍，镍合金，铁和铁合金中的至少一种的粘合剂。 切削刀片的实施例适用于例如旋转锥形钻孔钻头和固定刀具钻孔钻头。 公开了一种混合硬质合金材料，其包含分散在包含立方碳化物的硬质合金材料的连续区域中的基于碳化钨和钴的硬质合金的第一区域，并且可用于切削钻孔钻头。

    Reinforced roll and method of making same
    53.
    发明授权
    Reinforced roll and method of making same 有权
    钢筋卷及其制作方法

    公开(公告)号：US08308096B2

    公开(公告)日：2012-11-13

    申请号：US12502277

    申请日：2009-07-14

    Applicant: Prakash K. Mirchandani ,  Morris E. Chandler

    Inventor： Prakash K. Mirchandani ,  Morris E. Chandler

    IPC: B02C7/04 ,  B02C13/20

    CPC classification number: B22F7/062 ,  B02C4/305 ,  C22C1/1068 ,  C22C29/06 ,  Y10T29/49545 ,  Y10T29/49826 ,  Y10T156/10 ,  Y10T428/12097 ,  Y10T428/24 ,  Y10T428/249921

    Abstract: An article in the form of one of a plate, a sheet, a cylinder, and a portion of a cylinder, which is adapted for use as at least a portion of a wear resistant working surface of a roll is disclosed. The article includes a metal matrix composite comprising a plurality of inorganic particles dispersed in a matrix material. The matrix material includes at least one of a metal and a metal alloy, wherein the melting temperature of the inorganic particles is greater than the melting temperature of the matrix material. A plurality of hard elements are embedded in the metal matrix composite. The wear resistance of the metal matrix composite is less than the wear resistance of the hard elements, and the metal matrix composite preferentially wears away when the article is in use, thereby providing or preserving gaps between each of the plurality of hard elements at a working surface of the article.

    Abstract translation: 公开了一种适于用作辊的耐磨工作表面的至少一部分的板，片，圆筒和圆筒的一部分形式的制品。 该制品包括包含分散在基质材料中的多个无机颗粒的金属基质复合材料。 基质材料包括金属和金属合金中的至少一种，其中无机颗粒的熔融温度大于基质材料的熔融温度。 多个硬元素嵌入金属基质复合材料中。 金属基复合材料的耐磨性小于硬质元件的耐磨性，并且当使用该制品时，金属基质复合材料优先磨损，从而在工作中提供或保留多个硬元件中的每一个之间的间隙 表面的物品。

    EARTH-BORING BITS AND OTHER PARTS INCLUDING CEMENTED CARBIDE
    54.
    发明申请
    EARTH-BORING BITS AND OTHER PARTS INCLUDING CEMENTED CARBIDE 有权
    地下钻孔和其他部件，包括碳化硅

    公开(公告)号：US20120240476A1

    公开(公告)日：2012-09-27

    申请号：US13491649

    申请日：2012-06-08

    Applicant: Prakash K. Mirchandani ,  Morris E. Chandler ,  Michale E. Waller ,  Heath C. Coleman

    Inventor： Prakash K. Mirchandani ,  Morris E. Chandler ,  Michale E. Waller ,  Heath C. Coleman

    IPC: B24D3/06 ,  B24D18/00

    CPC classification number: E21B10/42 ,  B22F3/1035 ,  B22F3/26 ,  B22F2005/001 ,  C22C29/08 ,  Y10T428/12146 ,  Y10T428/12486

    Abstract: A method of making an article of manufacture includes positioning a cemented carbide piece comprising at least 5% of the total volume of the article of manufacture, and, optionally, a non-cemented carbide piece in a void of a mold in predetermined positions to partially fill the void and define an unoccupied space. Inorganic particles are added to the mold to partially fill the unoccupied space and provide a remainder space. The cemented carbide piece, the non-cemented carbide piece if present, and the hard particles are heated and infiltrated with a molten metal or a metal alloy. The melting temperature of the molten metal or the metal alloy is less than the melting temperature of the inorganic particles. The molten metal or metal alloy in the remainder space solidifies and binds the cemented carbide piece, the non-cemented carbide piece if present, and the inorganic particles to form the article of manufacture.

    Abstract translation: 制造制品的方法包括将包含制品的总体积的至少5％的硬质合金片和任选地将非硬质合金片放置在预定位置的模具空隙中以部分地 填补空白并定义空闲空间。 将无机颗粒添加到模具中以部分填充未占据的空间并提供剩余空间。 将硬质合金片，非硬质合金片（如果存在）和硬质颗粒用熔融金属或金属合金加热浸渍。 熔融金属或金属合金的熔融温度小于无机粒子的熔融温度。 剩余空间中的熔融金属或金属合金固化并结合硬质合金片，非硬质合金片（如果存在）和无机颗粒以形成制品。

    Earth-boring bits and other parts including cemented carbide
    55.
    发明授权
    Earth-boring bits and other parts including cemented carbide 有权
    地镗头等部件包括硬质合金

    公开(公告)号：US08225886B2

    公开(公告)日：2012-07-24

    申请号：US13207478

    申请日：2011-08-11

    Applicant: Prakash K. Mirchandani ,  Michale E. Waller ,  Morris E. Chandler ,  Heath C. Coleman

    Inventor： Prakash K. Mirchandani ,  Michale E. Waller ,  Morris E. Chandler ,  Heath C. Coleman

    IPC: E21B10/46

    CPC classification number: E21B10/42 ,  B22F3/1035 ,  B22F3/26 ,  B22F2005/001 ,  C22C29/08 ,  Y10T428/12146 ,  Y10T428/12486

    Abstract: An article of manufacture includes a cemented carbide piece and a joining phase that binds the cemented carbide piece into the article. The joining phase includes inorganic particles and a matrix material. The matrix material is a metal and a metallic alloy. The melting temperature of the inorganic particles is higher than the melting temperature of the matrix material. A method includes infiltrating the space between the inorganic particles and the cemented carbide piece with a molten metal or metal alloy followed by solidification of the metal or metal alloy to form an article of manufacture.

    Abstract translation: 制品包括硬质合金片和将硬质合金片结合到制品中的接合阶段。 接合相包括无机颗粒和基质材料。 基体材料是金属和金属合金。 无机颗粒的熔融温度高于基体材料的熔融温度。 一种方法包括用熔融金属或金属合金渗透无机颗粒和硬质合金块之间的空间，随后金属或金属合金固化以形成制品。

    CAST CONES AND OTHER COMPONENTS FOR EARTH-BORING TOOLS AND RELATED METHODS
    59.
    发明申请
    CAST CONES AND OTHER COMPONENTS FOR EARTH-BORING TOOLS AND RELATED METHODS 有权
    用于地球工具的铸造件和其他部件及相关方法

    公开(公告)号：US20100193252A1

    公开(公告)日：2010-08-05

    申请号：US12763968

    申请日：2010-04-20

    Applicant: Prakash K. Mirchandani ,  Jimmy W. Eason ,  James J. Oakes ,  James C. Westhoff ,  Gabriel B. Collins ,  John H. Stevens ,  Steven G. Caldwell ,  Alfred J. Mosco

    Inventor： Prakash K. Mirchandani ,  Jimmy W. Eason ,  James J. Oakes ,  James C. Westhoff ,  Gabriel B. Collins ,  John H. Stevens ,  Steven G. Caldwell ,  Alfred J. Mosco

    IPC: E21B10/00 ,  E21B10/08 ,  E21B10/42 ,  B22D19/14

    CPC classification number: E21B10/46 ,  B22F2005/001 ,  B22F2998/00 ,  C22C1/1068 ,  C22C29/00 ,  C22C29/005 ,  C22C29/067 ,  B22F7/06

    Abstract: The present invention relates to compositions and methods for forming a bit body for an earth-boring bit. The bit body may comprise hard particles, wherein the hard particles comprise at least one of carbide, nitride, boride, and oxide and solid solutions thereof, and a binder binding together the hard particles. The binder may comprise at least one metal selected from cobalt, nickel, and iron, and, optionally, at least one melting point reducing constituent selected from a transition metal carbide in the range of 30 to 60 weight percent, boron up to 10 weight percent, silicon up to 20 weight percent, chromium up to 20 weight percent, and manganese up to 25 weight percent, wherein the weight percentages are based on the total weight of the binder. In addition, the hard particles may comprise at least one of (i) cast carbide (WC+W2C) particles, (ii) transition metal carbide particles selected from the carbides of titanium, chromium, vanadium, zirconium, hafnium, tantalum, molybdenum, niobium, and tungsten, and (iii) sintered cemented carbide particles.

    Abstract translation: 本发明涉及用于形成钻头的钻头体的组合物和方法。 钻头体可以包括硬颗粒，其中硬颗粒包括碳化物，氮化物，硼化物及其氧化物和固体溶液中的至少一种以及将硬颗粒结合在一起的粘合剂。 粘合剂可以包含选自钴，镍和铁中的至少一种金属，以及任选地至少一种选自30-60重量％范围内的过渡金属碳化物的熔点降低成分，至多10重量％的硼 ，高达20重量％的硅，至多20重量％的铬，以及至多25重量％的锰，其中重量百分数是基于粘合剂的总重量。 此外，硬质颗粒可以包括（i）碳化钨（WC + W2C）颗粒，（ii）过渡金属碳化物颗粒中的至少一种，其选自钛，铬，钒，锆，铪，钽，钼， 铌和钨，和（iii）烧结的硬质合金颗粒。

    CEMENTED CARBIDE - METALLIC ALLOY COMPOSITES
    60.
    发明申请
    CEMENTED CARBIDE - METALLIC ALLOY COMPOSITES 有权
    硬质合金 - 金属合金复合材料

    公开(公告)号：US20090293672A1

    公开(公告)日：2009-12-03

    申请号：US12476738

    申请日：2009-06-02

    Applicant: Prakash K. Mirchandani ,  Morris E. Chandler ,  Eric W. Olsen

    Inventor： Prakash K. Mirchandani ,  Morris E. Chandler ,  Eric W. Olsen

    IPC: C22C30/00 ,  C22C29/12 ,  C22C29/08 ,  C22C29/06 ,  B22F7/02 ,  C22C29/14 ,  C22C29/16 ,  C22C29/18

    CPC classification number: C22C29/00 ,  B22F2998/00 ,  B22F2998/10 ,  B22F2999/00 ,  C22C27/04 ,  C22C29/08 ,  C22C32/00 ,  B22F3/02 ,  B22F3/10 ,  B22F2201/013 ,  B22F2201/20

    Abstract: A macroscopic composite sintered powder metal article including a first region including cemented hard particles, for example, cemented carbide. The article includes a second region including one of a metal and a metallic alloy selected from the group consisting of a steel, nickel, a nickel alloy, titanium, a titanium alloy, molybdenum, a molybdenum alloy, cobalt, a cobalt alloy, tungsten, and a tungsten alloy. The first region is metallurgically bonded to the second region, and the second region has a thickness of greater than 100 microns. A method of making a macroscopic composite sintered powder metal article is also disclosed, herein. The method includes co-press and sintering a first metal powder including hard particles and a powder binder and a second metal powder including the metal or metal alloy.

    Abstract translation: 一种宏观复合烧结粉末金属制品，其包括具有硬质合金的第一区域，例如硬质合金。 所述制品包括第二区域，所述第二区域包括选自钢，镍，镍合金，钛，钛合金，钼，钼合金，钴，钴合金，钨中的金属和金属合金之一， 和钨合金。 第一区域冶金结合到第二区域，第二区域具有大于100微米的厚度。 本文还公开了制造宏观复合烧结粉末金属制品的方法。 该方法包括将包含硬颗粒和粉末粘合剂的第一金属粉末和包括金属或金属合金的第二金属粉末共压并烧结。

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