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1. 发明申请

US20050247491A1 Earth-boring bits 有权
标题翻译：无聊的钻头
公开(公告)号：US20050247491A1
公开(公告)日：2005-11-10
申请号：US11116752
申请日：2005-04-28
申请人： Prakash Mirchandani , Jimmy Eason , James Oakes , James Westhoff , Gabriel Collins , John Stevens , Steven Caldwell , Alfred Mosco
发明人： Prakash Mirchandani , Jimmy Eason , James Oakes , James Westhoff , Gabriel Collins , John Stevens , Steven Caldwell , Alfred Mosco
IPC分类号： C22C1/10 , C22C29/00 , C22C29/06 , E21B10/00 , E21B10/46 , E21B10/36
CPC分类号： E21B10/46 , B22F2005/001 , B22F2998/00 , C22C1/1068 , C22C29/00 , C22C29/005 , C22C29/067 , B22F7/06
摘要： The present invention relates to compositions and methods for forming a bit body for an earth-boring bit. The bit body may comprise hard particles, wherein the hard particles comprise at least one carbide, nitride, boride, and oxide and solid solutions thereof, and a binder binding together the hard particles. The binder may comprise at least one metal selected from cobalt, nickel, and iron, and, optionally, at least one melting point reducing constituent selected from a transition metal carbide in the range of 30 to 60 weight percent, boron up to 10 weight percent, silicon up to 20 weight percent, chromium up to 20 weight percent, and manganese up to 25 weight percent, wherein the weight percentages are based on the total weight of the binder. In addition, the hard particles may comprise at least one of (i) cast carbide (WC+W2C) particles, (ii) transition metal carbide particles selected from the carbides of titanium, chromium, vanadium, zirconium, hafnium, tantalum, molybdenum, niobium, and tungsten, and (iii) sintered cemented carbide particles.
摘要翻译：本发明涉及用于形成钻头的钻头体的组合物和方法。钻头体可以包括硬质颗粒，其中硬颗粒包含至少一种碳化物，氮化物，硼化物及其氧化物和固体溶液，以及将硬颗粒结合在一起的粘合剂。粘合剂可以包含选自钴，镍和铁中的至少一种金属，以及任选地至少一种选自30-60重量％范围内的过渡金属碳化物的熔点降低成分，至多10重量％的硼，高达20重量％的硅，至多20重量％的铬，以及至多25重量％的锰，其中重量百分数是基于粘合剂的总重量。此外，硬质颗粒可以包括（i）碳化钨（WC + W2C）颗粒，（ii）过渡金属碳化物颗粒中的至少一种，其选自钛，铬，钒，锆，铪，钽，钼，铌和钨，和（iii）烧结的硬质合金颗粒。

2. 发明申请

US20050211475A1 Earth-boring bits 审中-公开
标题翻译：无聊的钻头
公开(公告)号：US20050211475A1
公开(公告)日：2005-09-29
申请号：US10848437
申请日：2004-05-18
申请人： Prakash Mirchandani , Jimmy Eason , James Oakes , James Westhoff , Gabriel Collins
发明人： Prakash Mirchandani , Jimmy Eason , James Oakes , James Westhoff , Gabriel Collins
IPC分类号： C22C1/10 , C22C29/00 , C22C29/06 , E21B10/00 , E21B10/46
CPC分类号： E21B10/46 , B22F2005/001 , B22F2998/00 , C22C1/1068 , C22C29/00 , C22C29/005 , C22C29/067 , B22F7/06
摘要： The present invention relates to compositions and methods for forming a bit body for an earth-boring bit. The bit body may comprise hard particles, wherein the hard particles comprise at least one carbide, nitride, boride, and oxide and solid solutions thereof, and a binder binding together the hard particles. The binder may comprise at least one metal selected from cobalt, nickel, and iron, and at least one melting point reducing constituent selected from a transition metal carbide in the range of 30 to 60 weight percent, boron up to 10 weight percent, silicon up to 20 weight percent, chromium up to 20 weight percent, and manganese up to 25 weight percent, wherein the weight percentages are based on the total weight of the binder. In addition, the hard particles may comprise at least one of (i) cast carbide (WC+W2C) particles, (ii) transition metal carbide particles selected from the carbides of titanium, chromium, vanadium, zirconium, hafnium, tantalum, molybdenum, niobium, and tungsten, and (iii) sintered cemented carbide particles.
摘要翻译：本发明涉及用于形成钻头的钻头体的组合物和方法。钻头体可以包括硬质颗粒，其中硬颗粒包含至少一种碳化物，氮化物，硼化物及其氧化物和固体溶液，以及将硬颗粒结合在一起的粘合剂。粘合剂可以包括选自钴，镍和铁中的至少一种金属，以及至少一种选自30-60重量％范围的过渡金属碳化物，至多10重量％的硼酸盐至20重量％，最高达20重量％的铬，和至多25重量％的锰，其中重量百分数是基于粘合剂的总重量。此外，硬颗粒可以包括（i）碳化钨（WC + W2C）颗粒，（ii）过渡金属碳化物颗粒中的至少一种，其选自钛，铬，钒，锆，铪，钽，钼，铌和钨，和（iii）烧结的硬质合金颗粒。

3. 发明申请

US20070108650A1 Injection molding fabrication method 有权
标题翻译：注塑成型方法
公开(公告)号：US20070108650A1
公开(公告)日：2007-05-17
申请号：US11585408
申请日：2006-10-24
申请人： Prakash Mirchandani , David Wills , Michale Waller , Jeffrey Weigold , Billy Swearengin
发明人： Prakash Mirchandani , David Wills , Michale Waller , Jeffrey Weigold , Billy Swearengin
IPC分类号： B27N3/00
CPC分类号： B29C47/06 , B21C23/22 , B21C25/02 , B22F5/10 , B22F7/06 , B22F2005/001 , B22F2005/004 , B22F2998/00 , B22F2998/10 , Y10T407/19 , Y10T407/1904 , Y10T408/907 , Y10T428/131 , Y10T428/1317 , B22F3/20 , B22F3/04 , B22F5/106
摘要： A method of forming a composite article by injecting at least two composite materials comprising metal carbides into a mold to form a green compact is disclosed. The composite materials may be metal powders comprising a binder metal, a hard particle. The composite material may further comprise a plastic binder. The two different composite materials are injected into the mold to form the green compact. Additionally, the composite materials may be injected through a die before entering the mold. In a specific embodiment, the die forms at least one internal channel within the green compact.
摘要翻译：公开了一种通过将包含金属碳化物的至少两种复合材料注入模具以形成生坯来形成复合制品的方法。复合材料可以是包含粘合剂金属，硬质颗粒的金属粉末。复合材料还可以包括塑料粘合剂。将两种不同的复合材料注入模具中以形成生坯。此外，复合材料可以在进入模具之前通过模具注入。在一个具体的实施例中，模具在绿色压实体内形成至少一个内部通道。

4. 发明申请

US20060288820A1 Composite article with coolant channels and tool fabrication method 有权
标题翻译：具有冷却剂通道和工具制造方法的复合制品
公开(公告)号：US20060288820A1
公开(公告)日：2006-12-28
申请号：US11167811
申请日：2005-06-27
申请人： Prakash Mirchandani , Michael Waller , Jeffrey Weigold , Billy Swearengin
发明人： Prakash Mirchandani , Michael Waller , Jeffrey Weigold , Billy Swearengin
IPC分类号： B21K5/04
CPC分类号： B29C47/06 , B21C23/22 , B21C25/02 , B22F5/10 , B22F7/06 , B22F2005/001 , B22F2005/004 , B22F2998/00 , B22F2998/10 , Y10T407/19 , Y10T407/1904 , Y10T408/907 , Y10T428/131 , Y10T428/1317 , B22F3/20 , B22F3/04 , B22F5/106
摘要： Embodiments of the present invention include composite articles comprising at least a first region and a second region and methods of making such articles. The first region may comprise a first composite material, wherein the first region comprises less than 5 wt. % cubic carbides by weight, and the second region may comprise a second composite material, wherein the second composite material differs from the first composite material in at least one characteristic. The composite article may additionally comprise at least one coolant channel. In certain embodiments, the first and second composite material may individually comprise hard particles in a binder, wherein the hard particles independently comprise at least one of a carbide, a nitride, a boride, a silicide, an oxide, and solid solutions thereof and the binder comprises at least one metal selected from cobalt, nickel, iron and alloys thereof. In specific embodiments, the first composite material and the second composite material may individually comprise metal carbides in a binder, such as a cemented carbide.
摘要翻译：本发明的实施例包括至少包括第一区域和第二区域的复合制品以及制造这种制品的方法。第一区域可以包括第一复合材料，其中第一区域包含小于5wt。并且第二区域可以包括第二复合材料，其中第二复合材料与第一复合材料在至少一个特征上不同。复合制品还可以包括至少一个冷却剂通道。在某些实施方案中，第一和第二复合材料可以单独地包含粘合剂中的硬颗粒，其中硬颗粒独立地包括碳化物，氮化物，硼化物，硅化物，氧化物和固溶体中的至少一种，并且粘合剂包含选自钴，镍，铁及其合金中的至少一种金属。在具体实施方案中，第一复合材料和第二复合材料可以单独地包括粘合剂中的金属碳化物，例如硬质合金。

5. 发明申请

US20070042217A1 Composite cutting inserts and methods of making the same 有权
标题翻译：复合切削刀片及其制造方法
公开(公告)号：US20070042217A1
公开(公告)日：2007-02-22
申请号：US11206368
申请日：2005-08-18
申请人： X. Fang , David Wills , Prakash Mirchandani
发明人： X. Fang , David Wills , Prakash Mirchandani
IPC分类号： B32B15/00 , C25D5/10 , C25D5/28 , B32B9/00
CPC分类号： B22F7/062 , B22F2998/00 , C22C29/00 , C22C29/08 , Y10T407/27 , Y10T428/12576 , Y10T428/12611 , Y10T428/12771 , Y10T428/12806 , Y10T428/12812 , Y10T428/24942 , Y10T428/24983 , Y10T428/252 , Y10T428/30 , Y10T428/31678 , B22F2207/01 , B22F2207/11 , B22F2207/13
摘要： Embodiments of the present invention include methods of producing a composite article. A method comprises introducing a first powdered metal grade from a feed shoe into a first portion of a cavity in a die and a second powdered metal grade from the feed shoe into a second portion of the cavity, wherein the first powder metal grade differs from the second powdered metal grade in chemical composition or particle size. Further methods are also provided. Embodiments of the present invention also comprise composite inserts for material removal operations. The composite inserts may comprise a first region and a second region, wherein the first region comprises a first composite material and the second region comprises a second composite material.
摘要翻译：本发明的实施方案包括生产复合制品的方法。一种方法包括将第一粉末金属级从进料靴引入模具中的空腔的第一部分中，以及将第二粉末金属级从进料靴引入空腔的第二部分，其中第一粉末金属级与第二种粉末状金属级化学成分或粒度。还提供了其他方法。本发明的实施例还包括用于材料去除操作的复合插入件。复合插入件可以包括第一区域和第二区域，其中第一区域包括第一复合材料，第二区域包括第二复合材料。

6. 发明申请

US20060131081A1 Cemented carbide inserts for earth-boring bits 有权
公开(公告)号：US20060131081A1
公开(公告)日：2006-06-22
申请号：US11013842
申请日：2004-12-16
申请人： Prakash Mirchandani , Alfred Mosco
发明人： Prakash Mirchandani , Alfred Mosco
IPC分类号： E21B10/36
CPC分类号： B22F7/06 , B22F2005/001 , B22F2998/00 , E21B10/52 , C22C29/005 , C22C29/067
摘要： This invention relates to cutting inserts for earth boring bits comprising a cutting zone, wherein the cutting zone comprises first cemented hard particles and a body zone, wherein the body zone comprises second cemented hard particles. The first cemented hard particles may differ in at least one property from the second cemented hard particles. As used herein, the cemented hard particles means a material comprising hard particles in a binder. The hard particles may be at least one of a carbide, a nitride, a boride, a silicide, an oxide, and solid solutions thereof and the binder may be at least one metal selected from cobalt, nickel, iron and alloys of cobalt, nickel or iron.

7. 发明申请

US20050126334A1 Hybrid cemented carbide composites 有权
标题翻译：混合硬质合金复合材料
公开(公告)号：US20050126334A1
公开(公告)日：2005-06-16
申请号：US10735379
申请日：2003-12-12
申请人： Prakash Mirchandani
发明人： Prakash Mirchandani
IPC分类号： C22C1/05 , C22C29/02 , C22C29/06 , C22C29/08 , B22F3/12
CPC分类号： C22C1/051 , B22F2999/00 , C22C29/06 , B22F1/0003 , B22F1/0096
摘要： Embodiments of the present invention include hybrid composite materials comprising a cemented carbide dispersed phase and a cemented carbide continuous phase. The contiguity ratio of the dispersed phase of embodiments may be less than or equal to 0.48. The hybrid composite material may have a hardness of the dispersed phase that is greater than the hardness of the continuous phase. For example, in certain embodiments of the hybrid composite material, the hardness of the dispersed phase is greater than or equal to 88 HRA and less than or equal to 95 HRA and the hardness of the continuous phase is greater than or equal to 78 and less than or equal to 91 HRA. Additional embodiments may include hybrid composite materials comprising a first cemented carbide dispersed phase wherein the volume fraction of the dispersed phase is less than 50 volume percent and a second cemented carbide continuous phase, wherein the contiguity ratio of the dispersed phase is less than or equal to 1.5 times the volume fraction of the dispersed phase in the composite material. The present invention also includes a method of making a hybrid cemented carbide composite by blending partially and/or fully sintered granules of the dispersed cemented carbide grade with “green” and/or unsintered granules of the continuous cemented carbide grade to provide a blend. The blend may then be consolidated to form a compact. Finally, the compact may be sintered to form a hybrid cemented carbide.
摘要翻译：本发明的实施方案包括包含硬质合金分散相和硬质合金连续相的混合复合材料。实施例的分散相的邻接比可以小于或等于0.48。混合复合材料可以具有大于连续相硬度的分散相的硬度。例如，在混合复合材料的某些实施方案中，分散相的硬度大于或等于88HRA且小于或等于95HRA，并且连续相的硬度大于或等于78％超过91 HRA。另外的实施方案可以包括混合复合材料，其包括第一硬质合金分散相，其中分散相的体积分数小于50体积％，第二硬质合金连续相，其中分散相的邻接比小于或等于复合材料中分散相的体积分数的1.5倍。本发明还包括通过将分散的硬质合金级分的部分和/或完全烧结的颗粒与连续硬质合金等级的“绿色”和/或未烧结颗粒混合以制备混合硬质合金复合材料以提供混合物的方法。然后可以将共混物固结以形成紧凑体。最后，可以将压块烧结以形成混合硬质合金。

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