-
1.发明申请Drill bit having increased resistance to fatigue cracking and method of producing same 审中-公开钻头具有增加的耐疲劳裂纹性和其制造方法公开(公告)号：US20050252691A1
公开(公告)日：2005-11-17
申请号：US11083540
申请日：2005-03-18
CPC分类号： E21B10/08 , B23K26/356
摘要： The present invention relates to a roller cone drill bit that includes a bit body adapted to be rotated about a longitudinal axis, where the bit body has at least one leg depending therefrom, wherein the leg comprises a treated portion that provides a residual compressive stress, and a roller cone rotatably mounted on a journal. The treated portion treatment may comprise one selected from shot peening, laser-shock peening, and hammer peening. Further, the present invention relates to a method of manufacturing a roller cone drill bit that includes inducing a compressive stress, through plastic deformation, in at least a portion of at least one leg depending from a bit body. The inducing a compressive stress may comprise one selected from shot peening, laser-shock peening, and hammer peening.
摘要翻译： 本发明涉及一种滚子锥钻头，其包括适于围绕纵向轴线旋转的钻头体，其中所述钻头体具有从其延伸的至少一个腿部，其中所述腿部包括提供残余压应力的处理部分， 以及可旋转地安装在轴颈上的辊筒。 经处理的部分处理可以包括选自喷丸硬化，激光冲击硬化和锤击锤中的一种。 此外，本发明涉及一种制造滚子锥形钻头的方法，该方法包括通过塑性变形在至少一个腿部的至少一部分中从钻头体引起的压缩应力。 诱导压应力可以包括选自喷丸硬化，激光冲击硬化和锤击锤中的一种。
-
公开(公告)号：US20060005662A1
公开(公告)日：2006-01-12
申请号：US11175120
申请日：2005-07-05
申请人： Greg Lockwood , Anthony Griffo , Dah-Ben Liang , Alysia White
发明人： Greg Lockwood , Anthony Griffo , Dah-Ben Liang , Alysia White
IPC分类号： C22C29/08
CPC分类号： C23C30/005 , B23K35/0266 , B23K35/327 , E21B10/50
摘要： A hardfacing composition for a drill bit, including a carbide phase comprising from about 50% to about 75% by weight of the hardfacing composition of a combination of 16 to 40 mesh cemented tungsten carbide and 80 to 200 mesh super dense tungsten carbide cobalt particles, wherein about 5% to about 50% by weight of the carbide phase comprises the super dense tungsten carbide cobalt particles, and a binder alloy including about 25% to about 50% by weight of the hardfacing composition.
摘要翻译： 用于钻头的表面硬化组合物，包括碳化物相，其包含约40重量％至约75重量％的硬质合金组合物，其为16至40目的硬质合金碳化钨和80至200目的超致密碳化钨钴颗粒的组合， 其中约5重量％至约50重量％的碳化物相包含超致密碳化钨钴颗粒和包含占该组合物的约25重量％至约50重量％的粘合剂合金。
-
公开(公告)号：US20060254828A1
公开(公告)日：2006-11-16
申请号：US11415657
申请日：2006-05-02
申请人： Dah-Ben Liang , Anthony Griffo
发明人： Dah-Ben Liang , Anthony Griffo
IPC分类号： E21B10/46
CPC分类号： E21B10/52 , B22F2005/001 , C22C29/08 , E21B10/08 , E21B10/16 , E21B17/1092
摘要： An insert for a rock bit that includes tungsten carbide particles, and a cobalt binder disposed around the particles, wherein a grain size of the tungsten carbide particles and a content of the cobalt binder are selected to provide a fracture toughness of at least about 18 ksi (in)0.5, a wear number of at least about 2, and a hardness of 85 to 87 Ra is disclosed.
摘要翻译： 一种用于包含碳化钨颗粒的岩石钻头和围绕颗粒设置的钴粘合剂的镶嵌件，其中选择碳化钨颗粒的粒度和钴粘合剂的含量以提供至少约18ksi的断裂韧性 （in）0.5，磨损数至少约2，硬度为85至87 Ra。
-
公开(公告)号：US08323372B1
公开(公告)日：2012-12-04
申请号：US09494877
申请日：2000-01-31
IPC分类号： C22C29/00
摘要： Low coefficient of thermal expansion (CTE) cermet compositions of this invention generally comprise a hard phase material and a ductile phase formed from a binder alloy, wherein the binder alloy is specially designed having a CTE that is closely matched to the hard phase material. Hard phase materials used to form low CTE compositions of this invention are selected from the group of carbides consisting of W, Ti, Mo, Nb, V, Si, Hf, Ta, and Cr carbides. The binder alloy is formed from a mixture of metals selected from the group consisting of Co, Ni, Fe, W, Mo, Ti, Ta, V, Nb, C, B, Cr, and Mn. In a preferred embodiment, low CTE compositions comprises WC as the hard phase material, and a ductile phase binder alloy formed from a mixture of Fe, Co, and Ni. The so-formed low CTE composition has a coefficient of thermal expansion that is less than that of conventional WC—Co at the same temperature and having the same metal content, thereby providing improved resistance to thermal shock and thermal fatigue related failure.
摘要翻译： 本发明的低热膨胀系数（CTE）金属陶瓷组合物通常包括由粘合剂合金形成的硬质相和材料，其中粘合剂合金被特别设计成具有与硬相材料紧密匹配的CTE。 用于形成本发明的低CTE组合物的硬相材料选自由W，Ti，Mo，Nb，V，Si，Hf，Ta和Cr碳化物组成的碳化物组。 粘合剂合金由选自Co，Ni，Fe，W，Mo，Ti，Ta，V，Nb，C，B，Cr和Mn的金属的混合物形成。 在优选实施方案中，低CTE组合物包含WC作为硬相材料，以及由Fe，Co和Ni的混合物形成的延性相粘合剂合金。 如此形成的低CTE组合物在相同温度下具有比常规WC-Co低的热膨胀系数，并且具有相同的金属含量，从而提供对热冲击和热疲劳相关故障的改进的抗性。
-
公开(公告)号：US07475743B2
公开(公告)日：2009-01-13
申请号：US11343225
申请日：2006-01-30
IPC分类号： E21B10/00
CPC分类号： E21B10/46 , B22F2005/002 , C22C29/08 , E21B10/55
摘要： A drill bit that includes a bit body formed from a matrix powder and at least one cutting element for engaging a formation, wherein the matrix powder included (a) stoichiometric tungsten carbide particles, (b) cemented tungsten carbide particles, and (c) cast tungsten carbide particles, and wherein after formation with the matrix powder, the bit has an erosion rate of less than 0.001 in/hr, a toughness of greater than 20 ksi(in0.5), and a transverse rupture strength of greater than 140 ksi is disclosed.
摘要翻译： 一种钻头，其包括由基质粉末形成的一个位体和用于接合地层的至少一个切割元件，其中所述基质粉末包括（a）化学计量的碳化钨颗粒，（b）硬质合金碳化物颗粒，和（c）铸造 碳化钨颗粒，并且其中在与基体粉末形成之后，该钻头的侵蚀速率小于0.001英寸/小时，韧性大于20ksi（in.5），横向断裂强度大于140ksi 被披露。
-
公开(公告)号：US20070175669A1
公开(公告)日：2007-08-02
申请号：US11343225
申请日：2006-01-30
申请人： Dah-Ben Liang , Anthony Griffo , Thomas Oldham , Gregory Lockwood
发明人： Dah-Ben Liang , Anthony Griffo , Thomas Oldham , Gregory Lockwood
IPC分类号： E21B10/00
CPC分类号： E21B10/46 , B22F2005/002 , C22C29/08 , E21B10/55
摘要： A drill bit that includes a bit body formed from a matrix powder and at least one cutting element for engaging a formation, wherein the matrix powder included (a) stoichiometric tungsten carbide particles, (b) cemented tungsten carbide particles, and (c) cast tungsten carbide particles, and wherein after formation with the matrix powder, the bit has an erosion rate of less than 0.001 in/hr, a toughness of greater than 20 ksi(in0.5), and a transverse rupture strength of greater than 140 ksi is disclosed.
摘要翻译： 一种钻头，其包括由基质粉末形成的一个位体和用于接合地层的至少一个切割元件，其中所述基质粉末包括（a）化学计量的碳化钨颗粒，（b）硬质合金碳化物颗粒，和（c）铸造 碳化钨颗粒，并且其中在与基体粉末形成之后，该钻头的侵蚀速率小于0.001英寸/小时，韧性大于20ksi（在<0.05）和横向断裂 公开了大于140ksi的强度。
-
公开(公告)号：US20050000317A1
公开(公告)日：2005-01-06
申请号：US10836595
申请日：2004-04-30
申请人： Dah-Ben Liang , Greg Lockwood , Anthony Griffo
发明人： Dah-Ben Liang , Greg Lockwood , Anthony Griffo
IPC分类号： B22F3/15 , C04B35/645 , C22C29/06 , C23C30/00 , E21B10/46 , E21B10/56 , E21B10/567
CPC分类号： E21B10/567 , B22F3/156 , B22F2005/001 , B22F2998/00 , C04B35/5626 , C04B35/64 , C04B35/6455 , C04B2235/3839 , C04B2235/3847 , C04B2235/405 , C04B2235/5436 , C04B2235/5472 , C04B2235/661 , C04B2235/96 , C22C29/06 , C23C30/005 , E21B10/46 , E21B10/56
摘要： A composite material includes a double cemented carbide and a coarse grain dopant, wherein the coarse grain is added in an amount sufficient to improve wear resistance of virgin double cemented carbide. The double cemented carbide may selected from the group of carbides consisting of W, Ti, Mo, Nb, V, Hf, Ta, and Cr carbides. The coarse grain dopant may also be at least one carbide selected from the group consisting of W, Ti, Mo, Nb, V, Hf, Ta, and Cr carbides. The coarse grain carbide may be between about 5% to about 90% by weight of the total carbide in the composite. Preferably, the coarse grain carbide is about 10% to about 50% by weight of the total carbide in the composite.
摘要翻译： 复合材料包括双重硬质合金和粗颗粒掺杂剂，其中粗晶加入量足以提高原始双重硬质合金的耐磨性。 双重硬质合金可以选自由W，Ti，Mo，Nb，V，Hf，Ta和Cr碳化物组成的碳化物组。 粗晶粒掺杂剂也可以是选自W，Ti，Mo，Nb，V，Hf，Ta和Cr碳化物中的至少一种碳化物。 粗晶粒碳化物可以占复合材料中总碳化物重量的约5％至约90％。 优选地，粗晶粒碳化物为复合材料中总碳化物的约10重量％至约50重量％。
-
公开(公告)号：US06782958B2
公开(公告)日：2004-08-31
申请号：US10108965
申请日：2002-03-28
申请人： Dah-Ben Liang , Alysia White , Greg Lockwood , Anthony Griffo
发明人： Dah-Ben Liang , Alysia White , Greg Lockwood , Anthony Griffo
IPC分类号： E21B1046
CPC分类号： C22C29/08 , B22F2005/001 , B22F2999/00 , B23K35/327 , E21B10/50 , B22F1/0003 , B22F9/04
摘要： In one embodiment, a hardfacing composition for a drill bit, including a carbide phase including from about 50% to about 80% by weight of the hardfacing composition of a combination of 80 to 200 mesh macro-crystalline tungsten carbide and 80 to 200 mesh crushed cast carbide, the crushed cast carbide being about 5% to 50% of the total weight of the carbide phase, and a binder alloy comprising about 20% to about 50% by weight of the hardfacing composition is disclosed. A hardfacing composition for a drill bit, including a carbide phase composed of sintered tungsten carbide having a particle size from about 80 to 200 mesh that is about 50% to about 80% by weight of the hardfacing composition, and a binder alloy forming about 20% to about 50% by weight of the hardfacing composition.
摘要翻译： 在一个实施方案中，用于钻头的表面硬化组合物，包括碳化物相，其包含约80重量％至约80重量％的表面硬化组合物，其为80至200目的宏观结晶碳化钨和80至200目的粉碎的组合 公开了硬质合金粉碎的碳化物为碳化物相的总重量的约5％至50％，包含约占硬化组合物重量的约20％至约50％的粘合剂合金。 用于钻头的表面硬化组合物，包括由烧结碳化钨组成的碳化物相，其碳化物粒度为约80至200目，约为硬化组合物重量的约50％至约80％，形成约20 ％至约50重量％的表面硬化组合物。
-
公开(公告)号：US07666244B2
公开(公告)日：2010-02-23
申请号：US11175120
申请日：2005-07-05
CPC分类号： C23C30/005 , B23K35/0266 , B23K35/327 , E21B10/50
摘要： A hardfacing composition for a drill bit, including a carbide phase comprising from about 50% to about 75% by weight of the hardfacing composition of a combination of 16 to 40 mesh cemented tungsten carbide and 80 to 200 mesh super dense tungsten carbide cobalt particles, wherein about 5% to about 50% by weight of the carbide phase comprises the super dense tungsten carbide cobalt particles, and a binder alloy including about 25% to about 50% by weight of the hardfacing composition.
摘要翻译： 用于钻头的表面硬化组合物，包括碳化物相，其包含约40重量％至约75重量％的硬质合金组合物，其为16至40目的硬质合金碳化钨和80至200目的超致密碳化钨钴颗粒的组合， 其中约5重量％至约50重量％的碳化物相包含超致密碳化钨钴颗粒和包含占该组合物的约25重量％至约50重量％的粘合剂合金。
-
公开(公告)号：US07258177B2
公开(公告)日：2007-08-21
申请号：US11415657
申请日：2006-05-02
申请人： Dah-Ben Liang , Anthony Griffo
发明人： Dah-Ben Liang , Anthony Griffo
IPC分类号： E21B10/36
CPC分类号： E21B10/52 , B22F2005/001 , C22C29/08 , E21B10/08 , E21B10/16 , E21B17/1092
摘要： An insert for a rock bit that includes tungsten carbide particles, and a cobalt binder disposed around the particles, wherein a grain size of the tungsten carbide particles and a content of the cobalt binder are selected to provide a fracture toughness of at least about 18 ksi (in)0.5, a wear number of at least about 2, and a hardness of 85 to 87 Ra is disclosed.
摘要翻译： 一种用于包含碳化钨颗粒的岩石钻头和围绕颗粒设置的钴粘合剂的镶嵌件，其中选择碳化钨颗粒的粒度和钴粘合剂的含量以提供至少约18ksi的断裂韧性 （in）0.5，磨损数至少约2，硬度为85至87 Ra。
-
-
-
-
-
-
-
-
-
搜索结果
31 条记录 (耗时 0.025 秒)
