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公开(公告)号：US20170183761A1
公开(公告)日：2017-06-29
申请号：US15455653
申请日：2017-03-10
IPC分类号： C22C26/00 , B24D18/00 , E21B10/567 , B22F7/06
CPC分类号： C22C26/00 , B22F7/062 , B24D18/0009 , C22C2026/007 , E21B10/567 , Y10T428/24942
摘要： A superhard structure comprises a body of polycrystalline superhard material comprising a first region and a second region, the second region being adjacent an exposed surface of the superhard structure, the second region comprising a diamond material or cubic boron nitride, the density of the second region being greater than 3.4×103 kilograms per cubic metre when the second region comprises diamond material. The material(s) forming the first and second regions have a difference in coefficient of thermal expansion, the first and second regions being arranged such that this difference induces compression in the second region adjacent the exposed surface. The first/a further region has the highest coefficient of thermal expansion of the polycrystalline body and is separated from a peripheral free surface of the body of polycrystalline superhard material by the second region or one or more further regions formed of a material or materials of a lower coefficient of thermal expansion. The regions comprise a plurality of grains of polycrystalline superhard material. There is also disclosed a method of making such a material.
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公开(公告)号：US10036208B2
公开(公告)日：2018-07-31
申请号：US14758198
申请日：2013-12-23
IPC分类号： E21B10/56 , E21B10/567 , E21B10/573 , B24D3/06 , E21B10/58
CPC分类号： E21B10/56 , B24D3/06 , E21B10/567 , E21B10/573 , E21B10/58
摘要： A cutter element for rock removal comprises a free standing PCD body (801, 1801) comprising two or more physical volumes (1702, 1703) within the boundary of the PCD body, wherein adjacent physical volumes differ in one or more of diamond and metal network compositional ratio, metal elemental composition and diamond grain size distribution, a functional working volume (803) distal to the PCD body, the functional working volume forming in use a region which comes into contact with the rock. A functional support volume (804) extant in use and having a proximal free surface extends from the functional working volume. The PCD body has a shape having an aspect ratio such that the ratio of the length (ae) of the longest edge of the circumscribing rectangular parallelepiped of the overall PCD body to the largest width (ad) of the smallest rectangular face from which the functional working volume extends of the circumscribing rectangular parallelepiped, is greater than or equal to 1.0, and one or more of the physical volumes forms at least part of one or other or both of the functional working volume and the functional support volume.
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公开(公告)号：US20150354286A1
公开(公告)日：2015-12-10
申请号：US14758186
申请日：2013-12-23
CPC分类号： E21B10/58 , B24D3/06 , B24D18/0009 , E21B10/567 , E21B10/573
摘要： A cutter element for rock removal comprises a free standing PCD body (801, 1801) comprising one or more physical volumes (1702, 1703), the PCD material being invariant in terms of the diamond and metal network compositional ratio and metal elemental composition such that each physical volume does not differ to any other physical volume with respect to diamond and metal network compositional ratio and metal elemental composition. The PCD body has a functional working volume (803) forming in use the region which comes into contact with the rock. A functional support volume (804) extant in use and having a proximal free surface extends from the functional working volume. The PCD body has an aspect ratio such that the ratio of the length (ae) of the longest edge of the circumscribing rectangular parallelepiped of the overall PCD body to the largest width (ad) of the smallest rectangular face from which the functional working volume extends of the circumscribing rectangular parallelepiped, is greater than or equal to 1.0.
摘要翻译： 用于岩石去除的切割元件包括独立的PCD主体（801,1801），其包括一个或多个物理体积（1702,1703），所述PCD材料根据金刚石和金属网络组成比和金属元素组成不变，使得 每个物理体积相对于金刚石和金属网络组成比和金属元素组成与任何其它物理体积没有不同。 PCD体具有在使用中形成与岩石接触的区域的功能性工作体积（803）。 存在于使用中并且具有近侧自由表面的功能支撑体积（804）从功能性工作体积延伸。 PCD体具有纵横比，使得整个PCD主体的外接长方体的最长边缘的长度（ae）与功能工作容积延伸的最小矩形面的最大宽度（ad）之比 的外接长方体，大于或等于1.0。
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4.发明申请公开(公告)号：US20170144271A1
公开(公告)日：2017-05-25
申请号：US15192110
申请日：2016-06-24
摘要： A free standing PCD body comprises a PCD material formed of combination of intergrown diamond grains forming a diamond network and an interpenetrating metallic network, the PCD body not being attached to a second body or substrate formed of a different material. The diamond network is formed of diamond grains having a plurality of grain sizes, and comprises a grain size distribution having an average diamond grain size, wherein the largest component of the diamond grain size distribution is no greater than three times the average diamond grain size. The PCD material forming the free standing PCD body is homogeneous, such that the PCD body is spatially constant and invariant with respect to diamond network to metallic network volume ratio. The homogeneity is measured at a scale greater than ten times the average grain size and spans the dimension of the PCD body. The PCD material is also macroscopically residual stress free at said scale.
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公开(公告)号：US20160002981A1
公开(公告)日：2016-01-07
申请号：US14758198
申请日：2013-12-23
CPC分类号： E21B10/56 , B24D3/06 , E21B10/567 , E21B10/573 , E21B10/58
摘要： A cutter element for rock removal comprises a free standing PCD body (801, 1801) comprising two or more physical volumes (1702, 1703) within the boundary of the PCD body, wherein adjacent physical volumes differ in one or more of diamond and metal network compositional ratio, metal elemental composition and diamond grain size distribution, a functional working volume (803) distal to the PCD body, the functional working volume forming in use a region which comes into contact with the rock. A functional support volume (804) extant in use and having a proximal free surface extends from the functional working volume. The PCD body has a shape having an aspect ratio such that the ratio of the length (ae) of the longest edge of the circumscribing rectangular parallelepiped of the overall PCD body to the largest width (ad) of the smallest rectangular face from which the functional working volume extends of the circumscribing rectangular parallelepiped, is greater than or equal to 1.0, and one or more of the physical volumes forms at least part of one or other or both of the functional working volume and the functional support volume.
摘要翻译： 用于岩石去除的切割元件包括在PCD主体的边界内包括两个或更多个物理体积（1702,1703）的独立PCD主体（801,1801），其中相邻的物理体积在金刚石和金属网络中的一个或多个中不同 组成比，金属元素组成和金刚石晶粒尺寸分布，在PCD体的远端的功能工作体积（803），在使用中形成与岩石接触的区域的功能工作体积。 存在于使用中并且具有近侧自由表面的功能支撑体积（804）从功能性工作体积延伸。 PCD本体具有纵横比的形状，使得整个PCD主体的外接长方体的最长边缘的长度（ae）与最小矩形面的最大宽度（ad）的比值，功能性 外接长方体的工作体积延伸大于或等于1.0，并且一个或多个物理体积形成功能工作体积和功能支撑体积中的一个或其它或两者的至少一部分。
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公开(公告)号：US20130333301A1
公开(公告)日：2013-12-19
申请号：US13997787
申请日：2011-12-20
IPC分类号： B24D3/06
摘要： A superhard structure comprises a body of polycrystalline superhard material comprising a first region and a second region. The second region is adjacent an exposed surface of the superhard structure and comprises a diamond material or cubic boron nitride with a density greater than 3.4×103 kilograms per cubic metre when the second region comprises diamond material. The material(s) forming the first and second regions have a difference in coefficient of thermal expansion, the first and second regions being arranged such that this difference induces compression in the second region adjacent the exposed surface. The first/a further region has the highest coefficient of thermal expansion of the polycrystalline body and is separated in part from a peripheral free surface of the body by the second region or one or more further regions formed of a material(s) of a lower coefficient of thermal expansion. The regions comprise a plurality of grains of polycrystalline superhard material. The second region is peripherally discontinuous with a gap therein through which a portion of the region formed of the material of highest coefficient of thermal expansion extends to the free surface of the superhard structure. There is also disclosed a method for making such a structure.
摘要翻译： 超硬结构包括多晶超硬材料体，其包括第一区域和第二区域。 第二区域与超硬结构的暴露表面相邻，并且当第二区域包括金刚石材料时，其包括密度大于3.4×103千克/立方米的金刚石材料或立方氮化硼。 形成第一和第二区域的材料具有热膨胀系数的差异，第一和第二区域被布置成使得该差异在邻近暴露表面的第二区域中引起压缩。 第一/另一区域具有最高的多晶体的热膨胀系数，并且通过第二区域或者由下层的材料形成的一个或多个其它区域部分地与本体的周边自由表面分离 热膨胀系数。 这些区域包括多个多晶超硬材料颗粒。 第二区域周向不连续地具有间隙，通过该间隙，由具有最高热膨胀系数的材料形成的区域的一部分延伸到超硬结构的自由表面。 还公开了制造这种结构的方法。
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7.发明授权公开(公告)号：US11529715B2
公开(公告)日：2022-12-20
申请号：US16356126
申请日：2019-03-18
摘要： A free standing PCD body comprises a PCD material formed of combination of intergrown diamond grains forming a diamond network and an interpenetrating metallic network, the PCD body not being attached to a second body or substrate formed of a different material. The diamond network is formed of diamond grains having a plurality of grain sizes, and comprises a grain size distribution having an average diamond grain size, wherein the largest component of the diamond grain size distribution is no greater than three times the average diamond grain size. The PCD material forming the free standing PCD body is homogeneous, such that the PCD body is spatially constant and invariant with respect to diamond network to metallic network volume ratio. The homogeneity is measured at a scale greater than ten times the average grain size and spans the dimension of the PCD body. The PCD material is also macroscopically residual stress free at said scale.
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公开(公告)号：US10180034B2
公开(公告)日：2019-01-15
申请号：US14758186
申请日：2013-12-23
IPC分类号： E21B10/56 , E21B10/58 , B24D3/06 , B24D18/00 , E21B10/567 , E21B10/573
摘要： A cutter element for rock removal comprises a free standing PCD body (801, 1801) comprising one or more physical volumes (1702, 1703), the PCD material being invariant in terms of the diamond and metal network compositional ratio and metal elemental composition such that each physical volume does not differ to any other physical volume with respect to diamond and metal network compositional ratio and metal elemental composition. The PCD body has a functional working volume (803) forming in use the region which comes into contact with the rock. A functional support volume (804) extant in use and having a proximal free surface extends from the functional working volume. The PCD body has an aspect ratio such that the ratio of the length (ae) of the longest edge of the circumscribing rectangular parallelepiped of the overall PCD body to the largest width (ad) of the smallest rectangular face from which the functional working volume extends of the circumscribing rectangular parallelepiped, is greater than or equal to 1.0.
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9.发明申请SUPERHARD STRUCTURE OR BODY COMPRISING A BODY OF POLYCRYSTALLINE DIAMOND CONTAINING MATERIAL 审中-公开包含多晶金刚石材料的超级结构或主体公开(公告)号：US20140345203A1
公开(公告)日：2014-11-27
申请号：US14367157
申请日：2012-12-20
IPC分类号： B24D3/10
摘要： A free standing PCD body comprises a PCD material formed of combination of intergrown diamond grains forming a diamond network and an interpenetrating metallic network, the PCD body not being attached to a second body or substrate formed of a different material. The diamond network is formed of diamond grains having a plurality of grain sizes, and comprises a grain size distribution having an average diamond grain size, wherein the largest component of the diamond grain size distribution is no greater than three times the average diamond grain size. The PCD material forming the free standing PCD body is homogeneous, such that the PCD body is spatially constant and invariant with respect to diamond network to metallic network volume ratio. The homogeneity is measured at a scale greater than ten times the average grain size and spans the dimension of the PCD body. The PCD material is also macroscopically residual stress free at said scale.
摘要翻译： 独立的PCD主体包括由形成金刚石网络的交织金刚石晶粒和互穿金属网络的组合形成的PCD材料，所述PCD主体不附接到由不同材料形成的第二主体或基板。 金刚石网络由具有多个晶粒尺寸的金刚石晶粒形成，并且包括具有平均金刚石晶粒尺寸的晶粒尺寸分布，其中金刚石晶粒尺寸分布的最大分量不大于平均金刚石晶粒尺寸的三倍。 形成独立PCD体的PCD材料是均匀的，使得PCD体相对于金刚石网络与金属网络体积比在空间上恒定且不变。 均匀度以大于平均晶粒尺寸的十倍的尺度测量，并跨越PCD体的尺寸。 PCD材料也在宏观上在所述刻度上具有残留应力。
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10.发明申请公开(公告)号：US20140311045A1
公开(公告)日：2014-10-23
申请号：US14367165
申请日：2012-12-20
CPC分类号： B24D3/10 , B24D18/0009 , C22C1/1026 , C22C26/00
摘要： A method of producing a free standing PCD comprises forming a mass of combined diamond particles and precursor compound(s) for the metals of the metallic network by suspending the diamond particles in a liquid, and crystallising and/or precipitating the precursor compounds in the liquid. The mass is then removed from suspension by sedimentation and/or evaporation to form a dry powder of combined diamond particles and precursor compound(s). The powder is subjected to a heat treatment to dissociate and reduce the precursor compound(s) to form metal particles smaller in size than the diamond particles to provide a homogeneous mass. This is then consolidated using isostatic compaction to form a homogeneous cohesive green body of a pre-selected size and 3-dimensional shape. The green body is subjected to high pressure and high temperature conditions such that the metallic material wholly or in part becomes molten and facilitates diamond particle to particle bonding via partial diamond re-crystallisation to form a free standing PCD body.
摘要翻译： 制备独立PCD的方法包括通过将金刚石颗粒悬浮在液体中形成用于金属网络的金属的组合的金刚石颗粒和前体化合物，并将前体化合物在液体中结晶和/或沉淀 。 然后通过沉降和/或蒸发从悬浮液中除去物质，形成组合的金刚石颗粒和前体化合物的干燥粉末。 对粉末进行热处理以解离和还原前体化合物以形成尺寸小于金刚石颗粒的金属颗粒，以提供均匀的质量。 然后使用等静压缩固结，以形成预选尺寸和3维形状的均匀的内聚生坯。 生坯体经受高压和高温条件，使得金属材料全部或部分变得熔融，并且通过部分金刚石再结晶促进金刚石颗粒与颗粒的结合，形成独立的PCD体。
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