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1. 发明授权

US06406030B1 O-ring seal with lubricant additives for rock bit bearings 失效
标题翻译： O型圈密封，带有用于岩石钻头轴承的润滑剂添加剂
公开(公告)号：US06406030B1
公开(公告)日：2002-06-18
申请号：US08943867
申请日：1997-10-08
申请人： Zhigang Fang , Robert Denton , Steven W. Peterson
发明人： Zhigang Fang , Robert Denton , Steven W. Peterson
IPC分类号： F16J1516
CPC分类号： E21B10/25 , F16J15/064 , F16J15/32 , Y10S277/944
摘要： O-ring seals for rock bit bearings comprise a body formed from an elastomeric material having one or more lubricant additive uniformly distributed throughout to reduce the coefficient of friction and stick slick amplitude at O-ring seal surfaces. The lubricant additives are selected from the group consisting of polytetrafluoroethylene, hexagonal boron nitride, flake graphite, ultra-high molecular weight polyurethane, and mixtures thereof. O-ring seals made from elastomeric compositions of this invention comprise in the range of from about 85 to 99 percent by volume elastomeric material, and in the range of from about 1 to 15 percent by volume of the lubricant additives based on the total volume of the composition.
摘要翻译：用于岩石钻头轴承的O形圈密封件包括由弹性体材料形成的主体，其具有均匀分布的一种或多种润滑剂添加剂，以降低O形环密封表面处的摩擦系数和粘性光滑振幅。润滑剂添加剂选自聚四氟乙烯，六方氮化硼，片状石墨，超高分子量聚氨酯及其混合物。由本发明的弹性体组合物制成的O形圈密封件的弹性体材料的体积含量为约85至99％，基于总体积的约1至15体积％的润滑剂添加剂组成。

2. 发明授权

US06571889B2 Rotary cone bit with functionally-engineered composite inserts 有权
公开(公告)号：US06571889B2
公开(公告)日：2003-06-03
申请号：US09846944
申请日：2001-05-01
申请人： Anthony Griffo , Zhigang Fang , Robert Denton
发明人： Anthony Griffo , Zhigang Fang , Robert Denton
IPC分类号： E21B1000
CPC分类号： B22F7/06 , B22F2005/001 , B22F2999/00 , B33Y80/00 , C23C30/005 , E21B10/52 , Y10T428/2993 , B22F3/22
摘要： A rotary cone bit, having a functionally-engineered surface of this invention, comprises a bit body having at least one leg extending therefrom, and a cone that is rotatably disposed on the leg. The cone typically comprises a plurality of cutting elements that project outwardly therefrom. The cutting elements comprises a cermet material selected from the group consisting of refractory metal carbides, nitrides, borides, carbonitrides and mixtures thereof. A functionally-engineered material is disposed over a surface portion of at least one of the cutting elements to form a wear resistant surface thereon. The wear resistant surface has a hardness that is different than that of the underlying cutting element. The wear resistant surface is provided by forming a conformable material mixture by combining one or more powders selected from the group consisting of cermets, carbides, borides, nitrides, carbonitrides, refractory metals, Co, Fe, Ni, and combinations thereof, with an applying agent. The applied material mixture is pressurized under conditions of elevated temperature to consolidate and sinter the material mixture, thereby forming the wear resistant surface. The material mixture is consolidated and sintered in a manner that avoids unwanted material migration between the applied material mixture and substrate, thereby providing a fully-densified wear surface having desired properties of hardness and/or fracture toughness.

3. 发明授权

US5842700A Composite rock bit seal 失效
标题翻译：复合岩石钻头密封
公开(公告)号：US5842700A
公开(公告)日：1998-12-01
申请号：US727001
申请日：1996-10-08
申请人： Zhigang Fang , Sujian Huang , Chris E. Cawthorne , Brian A. James , G. Steven Kyker , Robert Denton
发明人： Zhigang Fang , Sujian Huang , Chris E. Cawthorne , Brian A. James , G. Steven Kyker , Robert Denton
IPC分类号： E21B10/22 , E21B10/25 , F16J15/34
CPC分类号： E21B10/25 , Y10S277/91 , Y10S277/936 , Y10S277/944
摘要： A high performance rock bit journal seal is formed from a composite material comprising an elastomeric material and a nonelastomeric polymeric material. The polymeric material is preferably in the form of fibers woven into a sheet. The elastomeric material includes at least one lubricant additive. The composite seal material comprises a number of repeating sheets of polymeric fabric that are bonded together with the elastomeric material. In one embodiment, the seal includes a body formed entirely from the composite material, in which case both the static and dynamic seal surfaces are the same. In another embodiment, the seal includes a first body portion formed from the composite material, and a remaining body portion formed from a noncomposite elastomeric seal material. Seals formed from the composite seal material display enhanced wear resistance, reduced coefficient of friction, and improved high-temperature stability and endurance when compared to noncomposite seal materials, thereby both extending the useful life of seals formed therefrom formed and of rock bits that employ such seals.
摘要翻译：高性能岩石钻头密封件由包括弹性体材料和非弹性聚合材料的复合材料形成。聚合物材料优选为编织成片材的纤维的形式。弹性体材料包括至少一种润滑剂添加剂。复合密封材料包括与弹性体材料结合在一起的多个聚合物织物的重复片材。在一个实施例中，密封件包括完全由复合材料形成的主体，在这种情况下，静态和动态密封表面都相同。在另一个实施例中，密封件包括由复合材料形成的第一主体部分和由非复合弹性体密封材料形成的剩余主体部分。与复合密封材料相比，由复合密封材料形成的密封件显示出增强的耐磨性，降低的摩擦系数和改善的高温稳定性和耐久性，从而延长了由其形成的密封件的使用寿命和使用这种密封材料的岩石钻头海豹

4. 发明授权

US07235211B2 Rotary cone bit with functionally-engineered composite inserts 有权
标题翻译：带有功能化设计的复合刀片的旋转圆锥钻头
公开(公告)号：US07235211B2
公开(公告)日：2007-06-26
申请号：US10454374
申请日：2003-06-03
申请人： Anthony Griffo , Zhigang Fang , Robert Denton
发明人： Anthony Griffo , Zhigang Fang , Robert Denton
IPC分类号： B22F7/04
CPC分类号： B22F7/06 , B22F2005/001 , B22F2999/00 , B33Y80/00 , C23C30/005 , E21B10/52 , Y10T428/2993 , B22F3/22
摘要： A rotary cone bit, having a functionally-engineered surface of this invention, comprises a bit body having at least one leg extending therefrom, and a cone that is rotatably disposed on the leg. The cone typically comprises a plurality of cutting elements that project outwardly therefrom. The cutting elements comprises a cermet material selected from the group consisting of refractory metal carbides, nitrides, borides, carbonitrides and mixtures thereof. A functionally-engineered material is disposed over a surface portion of at least one of the cutting elements to form a wear resistant surface thereon. The wear resistant surface has a hardness that is different than that of the underlying cutting element. The wear resistant surface is provided by forming a conformable material mixture by combining one or more powders selected from the group consisting of cermets, carbides, borides, nitrides, carbonitrides, refractory metals, Co, Fe, Ni, and combinations thereof, with an applying agent. The applied material mixture is pressurized under conditions of elevated temperature to consolidate and sinter the material mixture, thereby forming the wear resistant surface. The material mixture is consolidated and sintered in a manner that avoids unwanted material migration between the applied material mixture and substrate, thereby providing a fully-densified wear surface having desired properties of hardness and/or fracture toughness.
摘要翻译：具有本发明的功能设计表面的旋转圆锥头包括具有从其延伸的至少一个腿的钻头体和可旋转地设置在腿上的锥体。锥体通常包括从其向外突出的多个切割元件。切割元件包括选自难熔金属碳化物，氮化物，硼化物，碳氮化物及其混合物的金属陶瓷材料。功能性设计的材料设置在至少一个切割元件的表面部分上，以在其上形成耐磨表面。耐磨表面的硬度与底层切割元件的硬度不同。通过将选自金属陶瓷，碳化物，硼化物，氮化物，碳氮化物，难熔金属，Co，Fe，Ni及其组合的一种或多种粉末与应用代理商将所施加的材料混合物在高温条件下加压，以固化和烧结材料混合物，从而形成耐磨表面。材料混合物被固结和烧结，以避免在所施加的材料混合物和基底之间不期望的材料迁移，从而提供具有所需硬度和/或断裂韧性性能的完全致密的磨损表面。

5. 发明申请

US20130048388A1 DRILL BIT WITH CUTTING ELEMENTS HAVING FUNCTIONALLY ENGINEERED WEAR SURFACE 有权
标题翻译：具有切割元件的钻头具有功能性的工程磨损表面
公开(公告)号：US20130048388A1
公开(公告)日：2013-02-28
申请号：US11768846
申请日：2007-06-26
申请人： Anthony Griffo , Zhigang Fang , Robert Denton
发明人： Anthony Griffo , Zhigang Fang , Robert Denton
IPC分类号： E21B10/46 , B24D3/06
CPC分类号： B22F7/06 , B22F2005/001 , B22F2999/00 , B33Y80/00 , C23C30/005 , E21B10/52 , Y10T428/2993 , B22F3/22
摘要： Drill bits and cutting elements having a functionally-engineered surface comprise a cermet material selected from the group consisting of refractory metal carbides, nitrides, borides, carbonitrides and mixtures thereof A functionally-engineered material is disposed over a surface portion one of the cutting elements to form a wear resistant surface thereon having a hardness that is different than that of the underlying cutting element. The wear resistant surface is provided by forming a conformable material mixture by combining one or more powders selected from the group consisting of cermets, carbides, borides, nitrides, carbonitrides, refractory metals, diamond particles, cubic boron nitride particles, Co, Fe, Ni, and combinations thereof, with an applying agent. The applied material mixture is pressurized under conditions of elevated temperature to consolidate and sinter the material mixture, thereby forming the wear resistant surface having desired properties of hardness and/or fracture toughness.
摘要翻译：具有功能设计表面的钻头和切割元件包括选自难熔金属碳化物，氮化物，硼化物，碳氮化物及其混合物的金属陶瓷材料。功能性工程材料设置在切割元件之一的表面部分上，在其上形成具有与下面的切割元件的硬度不同的硬度的耐磨表面。耐磨表面通过组合一种或多种选自金属陶瓷，碳化物，硼化物，氮化物，碳氮化物，难熔金属，金刚石颗粒，立方氮化硼颗粒，Co，Fe，Ni ，及其组合。将所施加的材料混合物在高温条件下加压，以固化和烧结材料混合物，从而形成具有所需硬度和/或断裂韧性性能的耐磨表面。

6. 发明授权

US6123337A Composite earth boring bit seal 失效
标题翻译：复合地镗头密封
公开(公告)号：US6123337A
公开(公告)日：2000-09-26
申请号：US980917
申请日：1997-12-01
申请人： Zhigang Fang , Sujian Huang , Chris E. Cawthorne , Brian A. James , G. Steve Kyker , Robert Denton , Roger Didericksen
发明人： Zhigang Fang , Sujian Huang , Chris E. Cawthorne , Brian A. James , G. Steve Kyker , Robert Denton , Roger Didericksen
IPC分类号： E21B10/22 , E21B10/25 , F16J15/16 , E21B33/10
CPC分类号： E21B10/25 , Y10S277/91 , Y10S277/936 , Y10S277/944
摘要： A high performance rock bit journal seal is formed from a composite material comprising an elastomeric material and a nonelastomeric polymeric material. The polymeric material is preferably in the form of fibers compiled or woven into a sheet. The elastomeric material may include one or more lubricant additives. The composite seal material comprises a number of repeating sheets of polymeric fabric that are bonded together with the elastomeric material. The seal can either be formed entirely of the composite seal material or partially of the composite material, in which case it is preferred that the seal wear or dynamic surface be formed from the composite material and the remaining portion of the seal be formed from an elastomeric material. The seal can be used as a primary journal seal, or as a secondary journal seal in a dual seal bit. Seals formed from the composite seal material display enhanced wear resistance, reduced coefficient of friction, and improved high-temperature stability and endurance when compared to noncomposite seal materials, thereby both extending the useful life of seals formed therefrom formed and of rock bits that employ such seals.
摘要翻译：高性能岩石钻头密封件由包括弹性体材料和非弹性聚合材料的复合材料形成。聚合物材料优选为编织或织成片材的纤维的形式。弹性体材料可以包括一种或多种润滑剂添加剂。复合密封材料包括与弹性体材料结合在一起的多个聚合物织物的重复片材。密封件可以完全由复合密封材料或复合材料部分地形成，在这种情况下，优选的是，密封件磨损或动态表面由复合材料形成，并且密封件的剩余部分由弹性体形成材料。密封件可用作主轴颈密封件，也可用作双密封钻头中的次级密封件。与复合密封材料相比，由复合密封材料形成的密封件显示出增强的耐磨性，降低的摩擦系数和改善的高温稳定性和耐久性，从而延长了由其形成的密封件的使用寿命和使用这种密封材料的岩石钻头海豹

7. 发明授权

US06478887B1 Boronized wear-resistant materials and methods thereof 有权
标题翻译：硼化耐磨材料及其方法
公开(公告)号：US06478887B1
公开(公告)日：2002-11-12
申请号：US09212170
申请日：1998-12-16
申请人： J. Albert Sue , Zhigang Fang , Alysia Canson White
发明人： J. Albert Sue , Zhigang Fang , Alysia Canson White
IPC分类号： B22F708
CPC分类号： C23C8/68 , C23C8/08 , C23C30/005
摘要： A boronized wear-resistant material that includes a boron-containing composition is disclosed. The boron-containing composition includes tungsten carbide and a compound represented by the formula W3MB3, where M is selected from the group consisting of iron, nickel, cobalt and alloys thereof. Particularly, a boride layer containing WC and W3CoB3 may be formed over a cemented tungsten carbide substrate by a suitable boronizing process. Additional compounds present in the boride layer include CoB, W2CoB2, and WB. A relatively thick and uniform boride layer may be obtained over a carbide substrate to form a wear-resistant body. Such a wear-resistant body may be used to manufacture cutting tools, drawing dies, inserts for an earth-boring bit, face seals, bearing surfaces, nozzles, and so on.
摘要翻译：公开了一种包含含硼组合物的硼化耐磨材料。含硼组合物包括碳化钨和由式W3MB3表示的化合物，其中M选自铁，镍，钴及其合金。特别地，含有WC和W3CoB 3的硼化物层可以通过合适的硼化工艺在粘结的碳化钨衬底上形成。存在于硼化物层中的另外的化合物包括CoB，W2CoB2和WB。可以在碳化物基材上获得相对厚且均匀的硼化物层，以形成耐磨体。这种耐磨体可用于制造切削工具，拉丝模，用于钻头的刀片，表面密封件，支承表面，喷嘴等。

8. 发明授权

US06361873B1 Composite constructions having ordered microstructures 有权
标题翻译：具有有序微结构的复合结构
公开(公告)号：US06361873B1
公开(公告)日：2002-03-26
申请号：US09499929
申请日：2000-02-08
申请人： Zhou Yong , Sujian J. Huang , Michael A. Siracki , Chris Cawthorne , J. Albert Sue , Ghanshyam Rai , Zhigang Fang
发明人： Zhou Yong , Sujian J. Huang , Michael A. Siracki , Chris Cawthorne , J. Albert Sue , Ghanshyam Rai , Zhigang Fang
IPC分类号： B22F300
CPC分类号： E21B10/567 , B22F7/06 , B22F2005/001 , B24D3/06 , B24D99/005 , C22C26/00 , C22C49/00 , C22C2204/00 , E21B10/52 , E21B10/56 , E21B10/5676 , Y10T428/30
摘要： Composite constructions of this invention comprise an ordered microstructure made up of multiple structural units that can be the same or different, and that comprise at least a first structural phase and a second structural phase. The first structural phase comprises a hard material that is selected from the group consisting of cermet materials, PCD, PCBN and mixtures thereof. The second structural phase is in contact with the first phase and comprises a material that is different than that selected to form the first structural phase. Additionally, the second structural phase is in contact with at least a portion of the first structural phase. Composite constructions of this invention can also have a multi-layer structures comprising two or more layers, wherein at least one of the layers comprises a composite construction having an ordered microstructure made up of the multiple structural units described above.
摘要翻译：本发明的复合结构包括由相同或不同的多个结构单元构成的并且包括至少第一结构相和第二结构相的有序微结构。第一结构相包括选自金属陶瓷材料，PCD，PCBN及其混合物的硬质材料。第二结构相与第一相接触并且包括不同于选择以形成第一结构相的材料。另外，第二结构相与第一结构相的至少一部分接触。本发明的复合结构还可以具有包括两层或更多层的多层结构，其中至少一层包括具有由上述多个结构单元构成的有序微结构的复合结构。

9. 发明授权

US06124564A Hardfacing compositions and hardfacing coatings formed by pulsed plasma-transferred arc 有权
标题翻译：通过脉冲等离子体转移电弧形成的表面硬化组合物和表面硬化涂层
公开(公告)号：US06124564A
公开(公告)日：2000-09-26
申请号：US153130
申请日：1998-09-15
申请人： J. Albert Sue , Alysia Canson White , Zhigang Fang
发明人： J. Albert Sue , Alysia Canson White , Zhigang Fang
IPC分类号： B23K9/28 , B23K10/02 , B23K10/00
CPC分类号： B23K10/027 , B23K9/287 , B23K2201/04
摘要： A new hardfacing composition is disclosed. In addition, a pulsed plasma transferred arc method for depositing hardfacing material with a higher content of carbide and lower dilution by a substrate metal is disclosed. The disclosed method produces a hardfacing coating which has a strong metallurgical bond to the substrate metal. The method includesthe following steps: (1) establishing a transferred plasma arc between an electrode and an area of a work piece, (2) optionally preheating the work piece to at least 250.degree. F., (3) forming a plasma column of inert gas in the arc by passing an electrical current between the electrode and the work piece, (4) feeding a stream of hardfacing material in powder form into the plasma column, and (5) pulsing the current between a pre-selected high pulse current value and low pulse current value while feeding the powdered hardfacing material. In this method, the low pulse current is selected to be sufficiently high to melt at least one component of the hardfacing material. The pulse rate and the high pulse current are selected to minimize the formation of a weld pool on the metal substrate during the hardfacing process. This method has applications in hardfacing any metallic work piece which requires wear resistance or erosion resistance. This method is especially effective in hardfacing roller cone surfaces and the milled teeth of a rock bit for erosion and wear protection.
摘要翻译：公开了一种新的表面硬化组合物。另外，公开了一种脉冲等离子体转移电弧法，用于沉积具有较高碳化物含量和较低稀释度的基底金属的表面硬化材料。所公开的方法产生与基底金属具有强烈冶金结合的表面硬化涂层。该方法包括以下步骤：（1）在电极和工件区域之间建立转移的等离子弧，（2）任选地将工件预热至至少250°F，（3）形成惰性等离子体柱通过在电极和工件之间通过电流来使电弧中的气体，（4）将粉末形式的表面硬化材料流供给到等离子体柱中，以及（5）将电流脉冲在预先选择的高脉冲电流值和低脉冲电流值，同时供给粉末状的表面硬化材料。在该方法中，选择低脉冲电流足够高以熔化表面硬化材料的至少一种组分。选择脉冲速率和高脉冲电流以在表面硬化过程中最小化金属基底上的焊池的形成。该方法具有耐磨性或抗侵蚀性的任何金属工件的表面硬化应用。该方法特别有效地用于加工滚子锥面和用于侵蚀和磨损保护的钻头的铣削齿。

10. 发明授权

US6106957A Metal-matrix diamond or cubic boron nitride composites 有权
标题翻译：金属基质金刚石或立方氮化硼复合材料
公开(公告)号：US6106957A
公开(公告)日：2000-08-22
申请号：US266111
申请日：1999-03-10
申请人： Zhigang Fang
发明人： Zhigang Fang
IPC分类号： B01J3/06 , B24D3/06 , B24D18/00 , C22C26/00 , B22F3/00
CPC分类号： B24D3/06 , B01J3/062 , B24D18/0054 , C22C26/00 , B01J2203/062 , B01J2203/0645 , B01J2203/0655 , B01J2203/066 , B01J2203/0685 , B22F2998/10 , B22F2999/00 , Y10T428/12007
摘要： A metal-matrix diamond or cubic boron nitride composite and method of making the same are disclosed. The metal-matrix/diamond composite includes grains of diamond uniformly distributed in a metal matrix. Alternatively, grains of cubic boron nitride may be used. Suitable metals for the metal matrix material may include nickel, cobalt, iron, and mixtures or alloys thereof. Other transition metals also may be used. The metal-matrix/diamond or metal-matrix/cubic boron nitride composite has high fracture toughness due to its fine microstructure. Such a metal-matrix/diamond or metal-matrix/cubic boron nitride composite is suitable for use in blanks or cutting elements for cutting tools, drill bits, dressing tools, and wear parts. It also may be used to make wire drawing dies.
摘要翻译：公开了金属基质金刚石或立方氮化硼复合物及其制备方法。金属基质/金刚石复合材料包括均匀分布在金属基体中的金刚石颗粒。或者，可以使用立方氮化硼的晶粒。用于金属基质材料的合适的金属可以包括镍，钴，铁及其混合物或合金。也可以使用其它过渡金属。金属基体/金刚石或金属基体/立方氮化硼复合材料具有高的断裂韧性，由于其精细的微观结构。这种金属基质/金刚石或金属基体/立方氮化硼复合材料适用于切割工具，钻头，修整工具和磨损部件的坯料或切割元件。它也可用于制作拉丝模具。

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