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    METHODS OF FORMING EARTH-BORING TOOLS INCLUDING SINTERBONDED COMPONENTS AND TOOLS FORMED BY SUCH METHODS
    7.
    发明申请
    METHODS OF FORMING EARTH-BORING TOOLS INCLUDING SINTERBONDED COMPONENTS AND TOOLS FORMED BY SUCH METHODS 审中-公开
    形成接地工具的方法，包括通过这种方法形成的烧结构件和工具

    公开(公告)号：WO2009152195A2

    公开(公告)日：2009-12-17

    申请号：PCT/US2009046812

    申请日：2009-06-10

    Applicant: BAKER HUGHES INC ,  SMITH REDD H ,  LYONS NICHOLAS J

    Inventor： SMITH REDD H ,  LYONS NICHOLAS J

    IPC: E21B10/46 ,  B22F3/14 ,  C22C29/08 ,  E21B10/54

    CPC classification number: B24D3/007 ,  B22F3/10 ,  B22F3/1017 ,  B22F3/16 ,  B22F7/06 ,  B22F7/062 ,  B22F2005/002 ,  B22F2999/00 ,  B24D3/06 ,  B24D3/20 ,  B24D18/0009 ,  E21B10/00 ,  E21B10/42 ,  E21B10/54 ,  E21B10/55 ,  E21B10/602 ,  B22F2207/17

    Abstract: Methods of forming earth-boring rotary drill bits by forming and joining two or less than fully sintered components, by forming and joining a first fully sintered component with a first shrink rate and forming a second less than fully sintered component with a second sinter-shrink rate greater that that of the first shrink rate of the first fully sintered component, by forming and joining a first less than fully sintered component with a first sinter-shrink rate and by forming and joining at least a second less than fully sintered component with a second sinter-shrink rate less than the first sinter- shrink rate. The methods include co-sintering a first less than fully sintered component and a second less than fully sintered component to a desired final density to form at least a portion of an earth-boring rotary drill bit which may either cause the first less than fully sintered component and the second less than fully sintered component to join or may cause one of the first less than fully sintered component and the second less than fully sintered component to shrink around and at least partially capture the other less than fully sintered component. Earth-boring rotary drill bits are formed using such methods.

    Abstract translation: 通过形成和接合两个或更少于完全烧结的部件来形成钻孔旋转钻头的方法，通过以第一收缩速率形成和接合第一完全烧结的部件并形成具有第二烧结收缩的第二小于完全烧结的部件 通过形成和接合具有第一烧结收缩率的第一小于完全烧结的部件并且通过将至少第二小于完全烧结的部件与至少一个小于完全烧结的部件接合而形成和接合第一完全烧结部件的第一收缩率， 第二次烧结收缩率小于第一次烧结收缩率。 所述方法包括将第一少于完全烧结的部件和第二小于完全烧结的部件共烧结至所需的最终密度，以形成至少一部分钻地旋转钻头，其可能导致第一小于完全烧结 并且第二小于完全烧结的部件连接或者可以导致第一小于完全烧结的部件中的一个，而第二个小于完全烧结的部件之一收缩并且至少部分地捕获另一个小于完全烧结的部件。 使用这种方法形成钻孔旋转钻头。

    METHODS OF ATTACHING A SHANK TO A BODY OF AN EARTH BORING DRILLING TOOL, AND TOOLS FORMED BY SUCH METHODS
    8.
    发明申请
    METHODS OF ATTACHING A SHANK TO A BODY OF AN EARTH BORING DRILLING TOOL, AND TOOLS FORMED BY SUCH METHODS 审中-公开
    将挖土机安装到地钻钻具上的方法和由这些方法形成的工具

    公开(公告)号：WO2008073310B1

    公开(公告)日：2008-10-16

    申请号：PCT/US2007025102

    申请日：2007-12-07

    Applicant: BAKER HUGHES INC ,  SMITH REDD H ,  STEVENS JOHN H

    Inventor： SMITH REDD H ,  STEVENS JOHN H

    IPC: E21B10/42

    CPC classification number: E21B10/42 ,  E21B10/00

    Abstract: Earth-boring rotary drill bits including a bit body (44) attached to a shank (48). In some embodiments, the bit body and the shank may have abutting surfaces (54, 56) concentric to an interface axis (A1) offset relative to a longitudinal axis (L42) of the drill bit. In additional embodiments, the bit body and the shank may have generally frustoconical abutting surfaces (98, 100). Methods for attaching a shank and a bit body of an earth-boring rotary drill bit include abutting a surface of a shank against a surface of a bit body, and causing the abutting surfaces to be concentric to an axis that is offset or shifted relative to a longitudinal axis of the drill bit.

    Abstract translation: 包括钻头（44）的钻地旋转钻头，所述钻头附接到柄部（48）。 在一些实施例中，钻头本体和柄部可具有与界面轴线（A1）同心的相对于钻头的纵向轴线（L42）偏置的邻接表面（54,56）。 在另外的实施例中，钻头体和柄部可具有大致截头圆锥形的邻接表面（98,100）。 用于连接钻地旋转钻头的钻头和钻头体的方法包括将钻头的表面抵靠钻头体的表面，并且使得对接表面与相对于钻头轴线偏移或偏移的轴线同心 钻头的纵向轴线。

    DISPLACEMENT MEMBERS AND METHODS OF USING SUCH DISPLACEMENT MEMBERS TO FORM BIT BODIES OF EARTH BORING ROTARY DRILLS BITS
    9.
    发明申请
    DISPLACEMENT MEMBERS AND METHODS OF USING SUCH DISPLACEMENT MEMBERS TO FORM BIT BODIES OF EARTH BORING ROTARY DRILLS BITS 审中-公开
    位移成员和使用这样的位移成员的方法来形成地球转动旋转钻头的位置

    公开(公告)号：WO2008073308A3

    公开(公告)日：2008-07-31

    申请号：PCT/US2007025099

    申请日：2007-12-07

    Applicant: BAKER HUGHES INC ,  SMITH REDD H ,  STEVENS JOHN H

    Inventor： SMITH REDD H ,  STEVENS JOHN H

    IPC: B22F7/00 ,  B22F3/12 ,  E21B10/00 ,  E21B10/55

    CPC classification number: E21B10/55 ,  B22F2998/00 ,  C22C1/1036 ,  C22C2204/00 ,  E21B10/00 ,  C22C29/08

    Abstract: Displacement members (68,100,110,120,124) for use in forming a bit body of an earth-boring rotary drill bit include a body having an exterior surface, at least a portion of which is configured to define at least one surface of the bit body as the bit body is formed around the displacement member. In some embodiments, the body may be hollow and/or porous. Methods for forming eai-th-boring rotary drill, bits include positioning such a displacement member in a mold (62,150) and forming a bit body around the displacement member in the mold. Additional methods include pressing a plurality of particles to form a body, forming at least one recess in the body, positioning such a displacement member in the recess, and sintering the body to form a bit body.

    Abstract translation: 用于形成钻地旋转钻头的钻头体的位移构件（68,100,110,120,124）包括具有外表面的主体，其至少一部分构造成将钻头体的至少一个表面定义为钻头体 形成在位移构件周围。 在一些实施例中，主体可以是中空的和/或多孔的。 用于形成钻头旋转钻头的方法包括将这种位移构件定位在模具（62,150）中并且在模具中的位移构件周围形成钻头体。 附加方法包括按压多个颗粒以形成主体，在主体中形成至少一个凹部，将这种位移构件定位在凹部中，并且烧结体以形成钻头体。

    METHODS AND SYSTEMS FOR COMPACTION OF POWDERS IN FORMING EARTH-BORING TOOLS
    10.
    发明申请
    METHODS AND SYSTEMS FOR COMPACTION OF POWDERS IN FORMING EARTH-BORING TOOLS 审中-公开
    用于压实形成地球工具的粉末的方法和系统

    公开(公告)号：WO2008085381A2

    公开(公告)日：2008-07-17

    申请号：PCT/US2007026052

    申请日：2007-12-20

    Applicant: BAKER HUGHES INC ,  SMITH REDD H ,  STEVENS JOHN H

    Inventor： SMITH REDD H ,  STEVENS JOHN H

    IPC: C22C26/00 ,  B22F1/00 ,  E21B10/46

    CPC classification number: B22F7/06 ,  C22C26/00 ,  C22C29/00 ,  E21B10/54

    Abstract: Methods for forming bodies of earth-boring drill bits and other tools include milling a plurality of hard particles and a plurality of particles comprising a matrix material to form a mill product comprising powder particles, separating the particles into a plurality of particle size fractions. Some of the particles from the fractions may be combined to form a powder mixture, which may be pressed to form a green body. Additional methods include mixing a plurality of hard particles and a plurality of particles comprising a matrix material to form a powder mixture, and pressing the powder mixture with pressure having an oscillating magnitude to form a green body. In yet additional methods a powder mixture may be pressed within a deformable container to form a green body and drainage of liquid from the container is enabled as the powder mixture is pressed.

    Abstract translation: 用于形成钻孔钻头和其他工具的主体的方法包括铣削多个硬颗粒和多个包含基质材料的颗粒，以形成包含粉末颗粒的研磨产物，将颗粒分离成多个颗粒级分。 可以将来自级分的一些颗粒组合以形成粉末混合物，其可以被压制以形成生坯体。 附加方法包括混合多个硬颗粒和多个包含基质材料的颗粒以形成粉末混合物，并且以具有振荡大小的压力挤压粉末混合物以形成生坯体。 在另外的方法中，粉末混合物可以在可变形容器内压制以形成生坯，并且当粉末混合物被压制时，能够从容器排出液体。

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