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1. 发明授权

US06908688B1 Graded composite hardmetals 失效
标题翻译：分级复合硬质合金
公开(公告)号：US06908688B1
公开(公告)日：2005-06-21
申请号：US09632400
申请日：2000-08-04
申请人： Shivanand Majagi , Robert W. Britzke , Daniel W. Nelson
发明人： Shivanand Majagi , Robert W. Britzke , Daniel W. Nelson
IPC分类号： B22F7/00 , B22F7/06 , B32B3/10
CPC分类号： E21B10/567 , B22F7/062 , B22F2005/001 , B22F2998/00 , Y10T428/12056 , Y10T428/12146 , B22F2207/01
摘要： A multiple-region hardmetal tool piece. The tool piece includes a hardmetal body including a hard particle component and a binder; an additional body, the additional body including a hardmetal body having a hard particle component and a binder; a metal body or a ceramic body; a substantially discontinuous gradient-free boundary layer between the hardmetal body and the additional body; and a mating surface between the hardmetal body and the additional body. In the preferred embodiment, the hard particle components are a carbide, such as tungsten carbide. In the preferred embodiment, the mating surface includes a male portion on one of the bodies and a corresponding female portion on the other of the bodies. The mating surface is symmetrical or asymmetrical and, in the preferred embodiment, the mating surface is axially symmetrical, such as a dimple. The mating surface may further including both micro and macro mating features.
摘要翻译：多区域硬质合金工具。工具件包括硬质合金体，其包括硬质颗粒组分和粘合剂; 附加体，所述附加体包括具有硬质颗粒组分和粘合剂的硬质合金体; 金属体或陶瓷体; 硬质合金体和附加体之间的基本上不连续的无梯度边界层; 以及硬质合金体和附加体之间的配合表面。在优选实施例中，硬质颗粒组分是碳化物，例如碳化钨。在优选实施例中，配合表面包括一个主体上的凸形部分和另一个主体上的对应的凹形部分。配合表面是对称的或不对称的，并且在优选实施例中，配合表面是轴向对称的，例如凹坑。配合表面还可以包括微型和宏观配合特征。

2. 发明授权

US06521353B1 Low thermal conductivity hard metal 有权
标题翻译：低导热硬质金属
公开(公告)号：US06521353B1
公开(公告)日：2003-02-18
申请号：US09378869
申请日：1999-08-23
申请人： Shivanand Majagi , Robert W. Britzke
发明人： Shivanand Majagi , Robert W. Britzke
IPC分类号： C22C105
CPC分类号： B22F3/156 , B22F3/225 , B22F2998/00 , B22F2998/10 , B22F2999/00 , B29B9/065 , B29C47/0011 , B29C47/30 , C22C29/08 , Y10T428/12146 , B22F3/02 , B22F3/20 , B22F3/22 , B29C47/12 , B22F3/10 , B22F3/1021 , B22F3/15 , B22F2201/20
摘要： A hard alloy material comprising tungsten carbide in an amount of 50 to 80 weight percent of the material, titanium carbide in an amount of at least about 10 weight percent, and a binder material of cobalt and nickel. Though tungsten carbide based, the thermal conductivity of the material of the invention is between 10 and 20 Watt/m° K. In other aspects of the invention, molybdenum and chromium are included to further lower the thermal conductivity of the material. In yet another aspect of the invention, one or more nitrides or carbonitrides of titanium and/or zirconium are included in the material.
摘要翻译：一种硬质合金材料，其包含量为所述材料的50至80重量％的碳化钨，至少约10重量％的量的碳化钛和钴和镍的粘合剂材料。虽然以碳化钨为基础，本发明材料的热导率为10瓦特/瓦特/米2 K.在本发明的其它方面，包括钼和铬以进一步降低材料的热导率。在本发明的另一方面，钛和/或锆的一种或多种氮化物或碳氮化物包括在材料中。

3. 发明授权

US06372012B1 Superhard filler hardmetal including a method of making 有权
标题翻译：超硬填料硬质合金，包括制造方法
公开(公告)号：US06372012B1
公开(公告)日：2002-04-16
申请号：US09616112
申请日：2000-07-13
申请人： Shivanand Majagi , Jimmy W. Eason , Robert W. Britzke
发明人： Shivanand Majagi , Jimmy W. Eason , Robert W. Britzke
IPC分类号： C22C2600
CPC分类号： B22F3/156 , B22F2998/00 , C22C26/00 , C22C29/00 , C22C2026/005
摘要： A superhard filler hardmetal having a superhard material filler, binder metal or matrix and in some instances at least a first hard component is disclosed. The superhard filler hardmetal has a porosity rating of substantially A06, B00, C00 or better and may be essentially pore free, i.e., A00, B00, C00. The superhard filler hardmetal is formed by mechanically mixing a superhard material, in some instances at least a first hard component and a binder metal or matrix precursor, shaping the mixture into a green body and consolidating the green body at a preselected temperature, superatmospheric pressure and time at temperature and time at superatmospheric pressure sufficient to form the superhard filler hardmetal. The consolidation preferably occurs without the formation of a liquid in the body and at least a portion of the time at superatmospheric pressure is at the preselected temperature. Diamond filler and boron nitride filler are examples of superhard materials usable as filler. The diamond filler may be coated to prevent its degradation during consolidation and use. Boron nitride filler optionally may be coated.
摘要翻译：公开了一种具有超硬材料填料，粘合剂金属或基体，并且在一些情况下至少第一硬组分的超硬填料硬质合金。超硬填料硬质合金的孔隙率基本上为A06，B00，C00或更好，并且可以基本上无孔，即A00，B00，C00。超硬填料硬质合金是通过机械混合超硬材料，在一些情况下至少第一硬组分和粘合剂金属或基质前体，将混合物成形为生坯并在预选温度，超大气压下固化生坯而形成的，在高于大气压的温度和时间的时间足以形成超硬填料硬质合金。固结优选在体内不形成液体的情况下发生，并且在超大气压下的至少一部分时间处于预选温度。金刚石填料和氮化硼填料是可用作填料的超硬材料的实例。金刚石填料可以被涂覆以防止其在固化和使用期间的降解。可以任选地涂覆氮化硼填料。

4. 发明授权

US06537343B2 Corrosion and wear resistant cemented carbide 失效
标题翻译：耐腐蚀和耐磨硬质合金
公开(公告)号：US06537343B2
公开(公告)日：2003-03-25
申请号：US09921808
申请日：2001-08-03
申请人： Shivanand Majagi , Debangshu Banerjee
发明人： Shivanand Majagi , Debangshu Banerjee
IPC分类号： C22C2906
CPC分类号： B22F3/156 , B22F2998/00 , B22F2998/10 , B22F2999/00 , C22C29/067 , B22F3/02 , B22F3/10 , B22F3/15 , B22F2201/20
摘要： A product having a chromium carbide based cemented carbide composition with a nickel and/or chromium based binder is disclosed. It possesses excellent corrosion resistance in combination with good strength and hardness/abrasion resistance. The average chromium carbide grain size is less than 10 &mgr;m.
摘要翻译：公开了一种具有基于铬和/或铬的粘结剂的碳化铬基硬质合金组合物的产品。它具有优异的耐腐蚀性，结合良好的强度和硬度/耐磨性。平均碳化铬粒度小于10um。

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