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公开(公告)号：US06517902B2
公开(公告)日：2003-02-11
申请号：US09827672
申请日：2001-04-06
IPC分类号： C23C1627
CPC分类号： E21B10/567 , B22F2005/001 , B22F2998/00 , C22C1/1094 , E21B10/5673 , Y10T428/30 , B22F7/06
摘要： A method of thermally treating a preform element, of the kind having a facing table of polycrystalline diamond bonded to a substrate of cemented tungsten carbide, comprises the steps of: (a) heating the element to a soaking temperature of 550-625° C., and preferably about 600° C., (b) maintaining the element at that temperature for at least one hour, and (c) cooling the element to ambient temperature. The resulting preform element has a substrate with a cobalt binder including a substrate interface zone with at least 30 percent by volume of the cobalt binder a hexagonal close packed crystal structure. This reduces the risk of cracking or delamination of the element in use.
摘要翻译： 一种热处理预成型件元件的方法，该预成型件元件具有结合到粘结碳化钨的基底的多晶金刚石的面对台，包括以下步骤：（a）将元件加热到550-625℃的均热温度 ，优选约600℃，（b）将元件保持在该温度下至少1小时，和（c）将元件冷却至环境温度。 所得到的预成型件元件具有包含具有至少30体积％的钴粘合剂的基底界面区域的钴粘合剂的基底，六方密堆积晶体结构。 这降低了使用中的元件的开裂或分层的风险。
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公开(公告)号：US08083011B2
公开(公告)日：2011-12-27
申请号：US12239915
申请日：2008-09-29
IPC分类号： E21B17/04 , E21B17/046
CPC分类号： E21B17/1092 , E21B17/1078 , E21B17/1085 , Y10T29/49826
摘要： A turbine matrix sleeve in accordance with the invention includes an inner cylindrical structure made up of a first material. The inner cylindrical structure may include multiple blades and multiple channels running between the blades along an outside diameter thereof. The inner cylindrical structure further includes threads, such as right-hand or left-hand threads, on an outer surface thereof. An outer layer, made up of a second material different from the first material, is integrally bonded to the threads. This outer layer may be optionally embedded with hardened inserts or buttons, such as PDC inserts, diamond inserts, TSP inserts, or the like. The threaded surface on the inner cylindrical structure significantly improves the bond between the outer layer and the inner cylindrical structure and creates a mechanical lock therebetween.
摘要翻译： 根据本发明的涡轮机矩阵套筒包括由第一材料构成的内圆柱形结构。 内圆柱形结构可以包括沿其外径在叶片之间延伸的多个叶片和多个通道。 内圆柱形结构还包括在其外表面上的诸如右手或左旋螺纹的螺纹。 由与第一材料不同的第二材料构成的外层与螺纹整体结合。 该外层可以可选地嵌入硬化的插入物或按钮，例如PDC插入物，金刚石插入物，TSP插入物等。 内圆柱形结构上的螺纹表面显着地改善了外层和内圆柱形结构之间的结合，并在其间形成了机械锁。
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公开(公告)号：US20100078222A1
公开(公告)日：2010-04-01
申请号：US12239915
申请日：2008-09-29
CPC分类号： E21B17/1092 , E21B17/1078 , E21B17/1085 , Y10T29/49826
摘要： A turbine matrix sleeve in accordance with the invention includes an inner cylindrical structure made up of a first material. The inner cylindrical structure may include multiple blades and multiple channels running between the blades along an outside diameter thereof. The inner cylindrical structure further includes threads, such as right-hand or left-hand threads, on an outer surface thereof. An outer layer, made up of a second material different from the first material, is integrally bonded to the threads. This outer layer may be optionally embedded with hardened inserts or buttons, such as PDC inserts, diamond inserts, TSP inserts, or the like. The threaded surface on the inner cylindrical structure significantly improves the bond between the outer layer and the inner cylindrical structure and creates a mechanical lock therebetween.
摘要翻译： 根据本发明的涡轮机矩阵套筒包括由第一材料构成的内圆柱形结构。 内圆柱形结构可以包括沿其外径在叶片之间延伸的多个叶片和多个通道。 内圆柱形结构还包括在其外表面上的诸如右手或左旋螺纹的螺纹。 由与第一材料不同的第二材料构成的外层与螺纹整体结合。 该外层可以可选地嵌入硬化的插入物或按钮，例如PDC插入物，金刚石插入物，TSP插入物等。 内圆柱形结构上的螺纹表面显着地改善了外层和内圆柱形结构之间的结合，并在其间形成了机械锁。
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公开(公告)号：US06440358B1
公开(公告)日：2002-08-27
申请号：US09683030
申请日：2001-11-09
申请人： Harold A. Sreshta , Eric F. Drake
发明人： Harold A. Sreshta , Eric F. Drake
IPC分类号： B22F302
CPC分类号： B22F3/225 , B22F3/22 , B22F7/08 , B22F2005/001 , B22F2998/00 , B22F2998/10 , B23K35/327 , B23K35/406 , C23C4/185 , C23C24/00 , B22F3/1216 , B22F3/04
摘要： The present invention relates to a method of forming a powder rod core comprising injecting a powder mix material into a mold, moving the mold to a curing station, and injecting material into a second mold.
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公开(公告)号：US6045750A
公开(公告)日：2000-04-04
申请号：US360751
申请日：1999-07-26
申请人： Eric F. Drake , Harold A. Sreshta
发明人： Eric F. Drake , Harold A. Sreshta
CPC分类号： E21B10/46 , B22F7/06 , C23C30/005 , B22F2005/001 , B22F2999/00
摘要： Methods of forming a new wear and abrasion overlay formed with the steel surfaces of components for earth boring bits, and the components formed by the methods are disclosed. The overlay comprises a hard material particulate containing a metal carbide and an alloy steel matrix. The volume fraction of the hard material particulate in the overlay is greater than about 75%, the average particle size of the hard material particulate is between about 40 mesh and about 80 mesh, and the thickness of the overlay is less than about 0.050 inches. The process of manufacture includes the steps of fixing a monolayer of hard material particulate to the surface of a flexible mold, filling the mold with materials and powders, and CIP densifying to form a preform. The preform is then forged to near 100% density in a rapid solid state densification powder metallurgy process. The resulting bit component has an integrally formed overlay with superior physical properties.
摘要翻译： 公开了形成用于镗孔钻头的部件的钢表面形成的新的磨损和磨损覆盖层的方法以及由该方法形成的部件。 覆盖层包括含有金属碳化物和合金钢基体的硬质材料颗粒。 覆盖层中硬质材料颗粒的体积分数大于约75％，硬质材料颗粒的平均粒度在约40目至约80目之间，覆盖层的厚度小于约0.050英寸。 制造方法包括以下步骤：将硬质材料颗粒的单层固定到柔性模具的表面，用材料和粉末填充模具，以及CIP致密化以形成预制件。 然后在快速固态致密化粉末冶金工艺中将预成型件锻造成接近100％的密度。 所得到的钻头部件具有整体形成的覆盖层，具有优异的物理性能。
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公开(公告)号：US5988302A
公开(公告)日：1999-11-23
申请号：US903913
申请日：1997-07-31
申请人： Harold A. Sreshta , Eric F. Drake
发明人： Harold A. Sreshta , Eric F. Drake
CPC分类号： C22C33/0292 , B22F7/06 , C22C29/067 , E21B10/50 , Y10T428/1209
摘要： A steel tooth rolling cutter earth boring drill bit includes a bit body with a threaded upper end for attachment to the end of a drill string, and a lower end including three legs extending downwardly from the bit body and with a rolling cutter rotatably mounted on each leg. A layer of wear resistant material is applied to a portion of each rolling cutter and comprises wear resistant particles in a substantially steel matrix. The steel matrix is integrally formed with the cutter in a rapid, solid state densification powder metallurgy (RSSDPM) process, and includes a duplex microstructure comprising from about 10 to 40 volume percent austenite and from about 60 to 90 volume percent martensite. The duplex microstructure may be achieved by incorporating a minor fraction of pure nickel and/or manganese powder in the powder mix used in the process, thereby providing nickel or manganese enrichment of the austenitic zones of the matrix.
摘要翻译： 钢齿切割机地钻钻头包括具有用于附接到钻柱的端部的螺纹上端的钻头体，以及包括从钻头体向下延伸的三个腿的下端，并且可旋转地安装在每个 腿。 将一层耐磨材料施加到每个轧制切割机的一部分，并且包括基本上为钢基体的耐磨颗粒。 钢基体与快速固态致密化粉末冶金（RSSDPM）工艺中的刀具一体形成，并且包括含有约10至40体积％奥氏体和约60至90体积％马氏体的双相微观结构。 可通过在工艺中使用的粉末混合物中加入少部分纯镍和/或锰粉末来实现双相组织，由此提供基体的奥氏体区域的镍或锰富集。
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公开(公告)号：US5967248A
公开(公告)日：1999-10-19
申请号：US950286
申请日：1997-10-14
申请人： Eric F. Drake , Harold A. Sreshta
发明人： Eric F. Drake , Harold A. Sreshta
CPC分类号： E21B10/46 , B22F7/06 , C23C30/005 , B22F2005/001 , B22F2999/00
摘要： Methods of forming a new wear and abrasion overlay formed with the steel surfaces of components for earth boring bits, and the components formed by the methods are disclosed. The overlay comprises a hard material particulate containing a metal carbide and an alloy steel matrix. The volume fraction of the hard material particulate in the overlay is greater than about 75%, the average particle size of the hard material particulate is between about 40 mesh and about 80 mesh, and the thickness of the overlay is less than about 0.050 inches. The process of manufacture includes the steps of fixing a monolayer of hard material particulate to the surface of a flexible mold, filling the mold with materials and powders, and CIP densifying to form a preform. The preform is then forged to near 100% density in a rapid solid state densification powder metallurgy process. The resulting bit component has an integrally formed overlay with superior physical properties.
摘要翻译： 公开了形成用于镗孔钻头的部件的钢表面形成的新的磨损和磨损覆盖层的方法以及由该方法形成的部件。 覆盖层包括含有金属碳化物和合金钢基体的硬质材料颗粒。 覆盖层中硬质材料颗粒的体积分数大于约75％，硬质材料颗粒的平均粒度在约40目至约80目之间，覆盖层的厚度小于约0.050英寸。 制造方法包括以下步骤：将硬质材料颗粒的单层固定到柔性模具的表面，用材料和粉末填充模具，以及CIP致密化以形成预制件。 然后在快速固态致密化粉末冶金工艺中将预成型件锻造成接近100％的密度。 所得到的钻头部件具有整体形成的覆盖层，具有优异的物理性能。
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公开(公告)号：US5653299A
公开(公告)日：1997-08-05
申请号：US559959
申请日：1995-11-17
申请人： Harold A. Sreshta , Eric F. Drake
发明人： Harold A. Sreshta , Eric F. Drake
CPC分类号： C22C33/0292 , B22F7/06 , C22C29/067 , E21B10/50 , Y10T428/1209
摘要： A steel tooth rolling cutter earth boring drill bit comprises a bit body with a threaded upper end for attachment to the end of a drill string, and a lower end comprising three legs extending downwardly from the bit body and with a rolling cutter rotatably mounted on each leg. A layer of wear resistant material is applied to a portion of each rolling cutter and comprises were resistant particles in a substantially steel matrix. The steel matrix is integrally formed with the cutter in a rapid, solid state densification powder metallurgy (RSSDPM) process, and comprises a duplex microstructure comprising from about 10 to about 40 volume percent austenite and from about 60 to 90 volume precent martensite. The duplex microstructure may be achieved by incorporating a minor fraction of pure nickel and/or manganese powder in the powder mix used in the process, thereby providing nickel or manganese enrichment of the austenitic zones of the matrix.
摘要翻译： 钢齿滚动切割机钻孔钻头包括具有用于附接到钻柱的端部的螺纹上端的钻头体，以及包括从钻头体向下延伸的三个腿部的下端，并且可旋转地安装在每个 腿。 将一层耐磨材料施加到每个轧制切割机的一部分，并且包括基本上为钢基体的耐磨颗粒。 钢基体与快速固态致密粉末冶金（RSSDPM）工艺中的切割机一体地形成，并且包括由约10至约40体积％的奥氏体和约60至90体积的马氏体组成的双相微观结构。 可通过在工艺中使用的粉末混合物中加入少部分纯镍和/或锰粉末来实现双相组织，由此提供基体的奥氏体区域的镍或锰富集。
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公开(公告)号：US4398952A
公开(公告)日：1983-08-16
申请号：US185696
申请日：1980-09-10
申请人： Eric F. Drake
发明人： Eric F. Drake
CPC分类号： B22F7/06 , E21B10/50 , E21B10/52 , E21B10/58 , B22F2999/00 , Y10T428/12021 , Y10T428/12146
摘要： A method is disclosed for forming roller cutters and also for forming cutting teeth for rolling cutter bits, including cutter inserts, cutter teeth formed in place, or formed separately and welded in place, etc., by powder metallurgy as a densified powder metallurgical composite of at least two varying phases, the composite having a substantially continuous mechanical property gradient therethrough. The gradient is from one region having hardness or wear resistant properties to another region having toughness properties. The method comprises:providing a first powder mixture comprising a major proportion by volume of a powdered refractory compound and a minor proportion by volume of a powdered binder metal or alloy. Providing a second powder comprising a powdered binder metal or alloy or a mixture comprising a powdered refractory material and a powdered binder metal or alloy, present in a lesser proportion by volume than in the first powder. Forming the cutter, or cutter teeth or inserts of the first and the second powders. Mixing the powders during or prior to the forming step and introducing into a first region of the mold a mixture having a larger proportion of the first powder relative to the second powder. Changing the relative proportions of the powders and introducing the mixture into a second region of the mold a mixture having a different proportion of the first powder relative to the second powder and a continuous gradient in the relative proportions of the powders between the regions. Densifying the powders into a solid member having a gradient in composition and properties from the first region to the second region.
摘要翻译： 公开了一种用于形成辊切割机的方法，还用于形成用于轧制切割刀头的切割齿，其包括切割刀片，形成在适当位置的切割齿，或单独形成并焊接到位等，通过粉末冶金作为致密的粉末冶金复合材料 至少两个变化阶段，复合材料具有通过其的基本上连续的机械性能梯度。 该梯度来自具有硬度或耐磨性的一个区域与另一具有韧性的区域。 该方法包括：提供第一粉末混合物，其包含主体积的粉末状耐火化合物和少量的粉末粘合剂金属或合金的体积比。 提供第二粉末，其包含粉末粘合剂金属或合金，或包含粉末状耐火材料和粉末状粘合剂金属或合金的混合物，其体积比第一粉末小。 形成刀具，或切割第一和第二粉末的齿或刀片。 在成形步骤期间或之前混合粉末，并将相对于第二粉末具有较大比例的第一粉末的混合物引入模具的第一区域。 改变粉末的相对比例并将混合物引入模具的第二区域，其中第一粉末相对于第二粉末具有不同比例的混合物，并且在区域之间的粉末的相对比例的连续梯度。 将粉末致密化成具有从第一区域到第二区域的组成和性质梯度的固体构件。
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公开(公告)号：US4372404A
公开(公告)日：1983-02-08
申请号：US185691
申请日：1980-09-10
申请人： Eric F. Drake
发明人： Eric F. Drake
摘要： Cutting teeth for rolling cutter bits, including cutter inserts, cutter teeth formed in place, or formed separately and welded in place, etc., are formed by powder metallurgy as a densified powder metallurgical composite of at least two varying phases, said composite having a substantially continuous mechanical property gradient therethrough. One of said phases is preferably a refractory compound and another phase is a binder metal or alloy. The gradient is from one mixture of said phases in one region having hardness or wear resistant properties to another mixture of said phases in another region having toughness properties.
摘要翻译： 通过粉末冶金形成具有至少两个变化相的致密的粉末冶金复合材料，形成用于滚动刀头的切削齿，包括切削刀片，形成在适当位置的切割齿，或单独形成并焊接就位等。所述复合材料具有 基本上连续的力学性能梯度。 所述相中的一个优选为耐火化合物，另一相是粘结剂金属或合金。 梯度是在具有硬度或耐磨性的一个区域中的所述相的一个混合物与另一个具有韧性的区域中的所述相的另一混合物。
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