公开(公告)号：US08272295B2

公开(公告)日：2012-09-25

申请号：US11635432

申请日：2006-12-07

申请人： Redd H. Smith ,  John H. Stevens

发明人： Redd H. Smith ,  John H. Stevens

IPC分类号： B21K5/04

CPC分类号： E21B10/55 ,  B22F2998/00 ,  C22C1/1036 ,  C22C2204/00 ,  E21B10/00 ,  C22C29/08

摘要： Displacement members 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 earth-boring rotary drill bits include positioning such a displacement member in a mold 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.

摘要翻译： 用于形成钻头旋转钻头的位体的位移构件包括具有外表面的主体，其至少一部分构造成在钻头体周围形成时限定钻头体的至少一个表面 位移构件。 在一些实施例中，主体可以是中空的和/或多孔的。 用于形成钻孔旋转钻头的方法包括将这种位移构件定位在模具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。

公开(公告)号：US07841259B2

公开(公告)日：2010-11-30

申请号：US11646225

申请日：2006-12-27

申请人： Redd H. Smith ,  John H. Stevens

发明人： Redd H. Smith ,  John H. Stevens

IPC分类号： B21K5/04

CPC分类号： B22F7/06 ,  C22C26/00 ,  C22C29/00 ,  E21B10/54

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20090301786A1

公开(公告)日：2009-12-10

申请号：US12133245

申请日：2008-06-04

申请人： Redd H. Smith ,  John H. Stevens ,  James L. Duggan ,  Nicholas J. Lyons ,  Jimmy W. Eason ,  Oliver Matthews, III

发明人： Redd H. Smith ,  John H. Stevens ,  James L. Duggan ,  Nicholas J. Lyons ,  Jimmy W. Eason ,  Oliver Matthews, III

IPC分类号： E21B10/00 ,  B21K5/04

CPC分类号： E21B10/00

摘要： Geometric compensation techniques are used to improve the accuracy by which features may be located on drill bits formed using particle compaction and sintering processes. In some embodiments, a positional error to be exhibited by at least one feature in a less than fully sintered bit body upon fully sintering the bit body is predicted and the at least one feature is formed on the less than fully sintered bit body at a location at least partially determined by the predicted positional error. In other embodiments, bit bodies of earth-boring rotary drill bits are designed to include a design drilling profile and a less than fully sintered bit body is formed including a drilling profile having a shape differing from a shape of the design drilling profile. Less than fully sintered bit bodies of earth-boring rotary drill bits are formed using such methods.

摘要翻译： 使用几何补偿技术来提高使用粒子压实和烧结过程形成的钻头上的特征可以确定的精度。 在一些实施例中，预测了在完全烧结钻头体时，小于完全烧结的钻头体中的至少一个特征所呈现的位置误差，并且在位于不到完全烧结的钻头体的位置上形成至少一个特征 至少部分地由预测的位置误差确定。 在其它实施例中，钻孔旋转钻头的钻头体被设计成包括设计钻孔剖面，并且形成的钻孔轮廓小于完全烧结的钻头体，其具有与设计钻削剖面形状不同的形状。 使用这种方法形成小于钻孔旋转钻头的完全烧结钻头体。

公开(公告)号：US20080202814A1

公开(公告)日：2008-08-28

申请号：US11710091

申请日：2007-02-23

申请人： Nicholas J. Lyons ,  John H. Stevens ,  Redd H. Smith

发明人： Nicholas J. Lyons ,  John H. Stevens ,  Redd H. Smith

IPC分类号： E21B10/36

CPC分类号： E21B10/50

摘要： Methods of forming cutter assemblies for use on earth-boring tools include sintering a cone structure to fuse one or more cutting elements thereto. In some embodiments, one or more green, brown, or fully sintered cutting elements may be positioned on a green or brown cone structure prior to sintering the cone structure to a final density. Cutter assemblies may be formed by such methods, and such cutter assemblies may be used in earth-boring tools such as, for example, earth-boring rotary drill bits and hole openers.

摘要翻译： 形成用于钻孔工具的切割器组件的方法包括烧结锥形结构以将一个或多个切割元件熔合到其上。 在一些实施例中，在将锥形结构烧结到最终密度之前，可以将一个或多个绿色，棕色或完全烧结的切割元件定位在绿色或棕色锥形结构上。 切割器组件可以通过这种方法形成，并且这种切割器组件可以用于例如钻孔旋转钻头和开孔器的钻孔工具中。

公开(公告)号：US06872356B2

公开(公告)日：2005-03-29

申请号：US10295641

申请日：2002-11-15

申请人： Trent N. Butcher ,  Ralph M. Horton ,  Stephen R. Jurewicz ,  Danny E. Scott ,  Redd H. Smith

发明人： Trent N. Butcher ,  Ralph M. Horton ,  Stephen R. Jurewicz ,  Danny E. Scott ,  Redd H. Smith

IPC分类号： B22F7/06 ,  E21B10/16 ,  E21B10/56 ,  E21B10/567 ,  B22F7/02

CPC分类号： E21B10/567 ,  B22F7/06 ,  B22F2003/248 ,  B22F2005/001 ,  B22F2998/00 ,  B22F2998/10 ,  E21B10/16 ,  B22F2207/01 ,  B22F3/14 ,  B22F3/1028

摘要： The residual stresses that are experienced in polycrystalline diamond cutters, which lead to cutter failure, can be effectively modified by selectively thinning the carbide substrate subsequent to high temperature, high pressure (sinter) processing, by selectively varying the material constituents of the carbide substrate, by subjecting the PDC cutter to an annealing process during sintering, by subjecting the formed PDC cutter to a post-process stress relief anneal, or a combination of those means.

摘要翻译： 通过选择性地改变碳化物衬底的材料成分，通过选择性地在高温，高压（烧结）处理）之后使碳化物衬底选择性地变薄，可以有效地改变多晶金刚石刀具中经历的导致刀具失效的残余应力， 通过使PDC切割机在烧结期间进行退火处理，通过对所形成的PDC切割器进行后处理应力消除退火或这些装置的组合。

公开(公告)号：US5447208A

公开(公告)日：1995-09-05

申请号：US156086

申请日：1993-11-22

申请人： Jeffrey B. Lund ,  Redd H. Smith

发明人： Jeffrey B. Lund ,  Redd H. Smith

IPC分类号： B23B27/14 ,  B24B1/00 ,  B24B3/60 ,  B24B53/02 ,  E21B10/56 ,  E21B10/567 ,  E21B10/46 ,  B23P9/00

CPC分类号： E21B10/567 ,  B23B27/145 ,  B24B1/00 ,  B24B53/02 ,  E21B10/5673 ,  B23B2226/315 ,  E21B2010/566 ,  Y10T407/27

摘要： A superhard cutting element having a polished, low friction, substantially planar cutting face with a surface finish roughness of 10 .mu. in. or less and preferably 0.5 .mu. in. or less.

摘要翻译： 具有抛光的，低摩擦的，基本上平面的切割面的超硬切割元件，其表面光洁度为10微米或更小，优选为0.5微米或更小。

公开(公告)号：US5431239A

公开(公告)日：1995-07-11

申请号：US44938

申请日：1993-04-08

申请人： Gordon A. Tibbitts ,  Craig H. Cooley ,  Redd H. Smith ,  Paul E. Pastusek ,  Ralph M. Horton

发明人： Gordon A. Tibbitts ,  Craig H. Cooley ,  Redd H. Smith ,  Paul E. Pastusek ,  Ralph M. Horton

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

CPC分类号： E21B10/567

摘要： An improved stud design for an earth boring drill bit is disclosed preferably using materials of different hardness and toughness layered to provide maximum resistance to surface abrasion coupled with excellent structural properties including high strength with maximum fracture toughness. The bit body is conventionally attached to a drill string, and has a crown and gage portion. The studs preferably include a core, made of steel or other material having high fracture toughness, covered at least in part with a hard, abrasion resistant material such as tungsten carbide. Each stud is secured to a socket in the bit body by means of brazing or other suitable means such as a press fit. The cutting element is brazed to a mounting face of the stud prior to affixation of the stud to the bit body and is preferably comprised of a polycrystalline diamond compact adhered to a backing layer of tungsten carbide.

摘要翻译： 公开了一种用于钻孔钻头的改进的螺柱设计，其使用不同硬度和韧性的材料，其层压以提供对表面磨损的最大阻力，以及优异的结构特性，包括具有最大断裂韧性的高强度。 钻头主体通常安装在钻柱上，并具有表冠和表面部分。 螺柱优选地包括由钢或其他具有高断裂韧性的材料制成的芯，至少部分地用硬的耐磨材料（例如碳化钨）覆盖。 每个螺柱通过钎焊或其他合适的方式如压配合固定在钻头体中的插座上。 在将螺柱固定到钻头体之前，将切割元件钎焊到螺柱的安装面上，并且优选地由粘附到碳化钨背衬层的多晶金刚石块组成。

公开(公告)号：US5355750A

公开(公告)日：1994-10-18

申请号：US159009

申请日：1993-11-29

申请人： Danny E. Scott ,  Redd H. Smith ,  Gordon A. Tibbitts

发明人： Danny E. Scott ,  Redd H. Smith ,  Gordon A. Tibbitts

IPC分类号： B22F7/06 ,  E21B10/52 ,  E21B10/56 ,  E21B10/567 ,  E21B10/62 ,  B21K5/02

CPC分类号： E21B10/5676 ,  B22F7/06 ,  E21B10/52 ,  E21B10/56 ,  E21B10/62 ,  Y10S76/11 ,  Y10S76/12

摘要： An improved earth-boring bit the rolling cone variety and an insert for use therein is provided. A superabrasive element is coated with at least one layer of metallic material. The superabrasive element then is placed in a receptacle cavity in a pre-formed hard metal jacket. 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 therefore, are formed without resort to high-temperature, high-pressure processes.

公开(公告)号：US08043555B2

公开(公告)日：2011-10-25

申请号：US12632371

申请日：2009-12-07

申请人： Redd H. Smith ,  Trevor Burgess ,  Jimmy W. Eason

发明人： Redd H. Smith ,  Trevor Burgess ,  Jimmy W. Eason

IPC分类号： C22C1/05 ,  C22C29/00

CPC分类号： E21B10/50 ,  E21B10/46

摘要： An earth-boring bit has a steel body and bearing pin for rotatably supporting a cone. The cone has an exterior surface containing rows of cutting elements. The cone and cutting elements are formed of cemented tungsten carbide. The cone may be manufactured by applying pressure to a mixture of hard particles and metal alloy powder to form a billet, then machining the billet to a desired over-sized conical shaped product. Then the conical-shaped product is liquid-phase sintered to a desired density, which causes shrinking to the desired final shape.

摘要翻译： 钻头具有用于可旋转地支撑锥体的钢体和轴承销。 锥体具有包含一排切割元件的外表面。 锥形和切割元件由粘结碳化钨形成。 可以通过向硬颗粒和金属合金粉末的混合物施加压力以形成坯料，然后将坯料机加工成期望的大尺寸锥形产品来制造锥体。 然后，圆锥形产品被液相烧结至所需的密度，这导致收缩到期望的最终形状。

公开(公告)号：US20110073377A1

公开(公告)日：2011-03-31

申请号：US12570852

申请日：2009-09-30

申请人： David L. Rickabaugh ,  Rudolf Carl Pessier ,  Mark E. Anderson ,  William A. Moss ,  Redd H. Smith

发明人： David L. Rickabaugh ,  Rudolf Carl Pessier ,  Mark E. Anderson ,  William A. Moss ,  Redd H. Smith

IPC分类号： E21B10/60 ,  B22D19/14 ,  B22F1/00 ,  B21K5/04

CPC分类号： E21B10/602 ,  B22D19/14 ,  C22C1/1036 ,  C22C9/00

摘要： Earth-boring drill bits include a bit body including a blockage-resistant internal fluid passageway. The blockage-resistant internal fluid passageway includes at least one internal fluid passageway formed in the bit body and a cuttings filtering feature formed in the at least one internal fluid passageway configured to prevent at least some cuttings from flowing through the at least one internal fluid passageway. In one embodiment, the cuttings filtering feature includes at least one lateral member extending transversely across the at least one internal fluid passageway. In another embodiment, the cuttings filtering feature includes forming a central portion of the at least one internal fluid passageway with a width along a lateral axis thereof less than an average width of a fluid path extending through a nozzle disposed at least partially within the at least one internal fluid passageway. Methods of forming the blockage-resistant internal fluid passageway are also disclosed.

摘要翻译： 钻孔钻头包括具有阻塞内部流体通道的钻头体。 防堵塞的内部流体通道包括形成在钻头体中的至少一个内部流体通道和形成在至少一个内部流体通道中的切屑过滤特征，该内部流体通道构造成防止至少一些切屑流过至少一个内部流体通道 。 在一个实施例中，切屑过滤特征包括横向穿过至少一个内部流体通道延伸的至少一个横向构件。 在另一个实施例中，切屑过滤特征包括形成至少一个内部流体通道的中心部分，其宽度沿着其横向轴线小于延伸穿过喷嘴的平均宽度，喷嘴至少部分地至少设置在至少 一个内部流体通道。 还公开了形成耐阻塞内部流体通道的方法。