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1. 发明授权

US10137502B1 Near net shape combustion driven compaction process and refractory composite material for high temperature applications 有权
$Near net shape combustion driven compaction process and refractory composite material for high temperature applications$
公开(公告)号：US10137502B1
公开(公告)日：2018-11-27
申请号：US11975910
申请日：2007-10-22
申请人： Karthik Nagarathnam , Donald Trostle , David L. Kruczynski , Dennis W. Massey
发明人： Karthik Nagarathnam , Donald Trostle , David L. Kruczynski , Dennis W. Massey
IPC分类号： B22F3/23 , B22F1/02
摘要： Near net shape refractory material is made in combustion driven compaction. The gas mixture is combusted, driving a piston or ram into a die containing refractory material powder, compressing the powder into a near net shape. As the chamber is filled with gas, the piston or ram is allowed to rest on the powder, pre-compressing the powder and removing trapped air. During compression, forces reach 150 tsi or more. Loading occurs within several hundred milliseconds. After compression, the shaped refractory part is sintered in a hydrogen environment. This process creates near net shape components with little scrap metal. The apparatus used to perform this process is about the size of a telephone booth and can be moved with a standard forklift. The powder may include a combination of Mo—Re, Re, W—Re, HfC and Hf of a fineness dictated by desired shrinkage, resulting in a material suitable for high-stress, high-temperature applications.

2. 发明授权

US09224526B1 Magnet construction by combustion driven high compaction 有权
标题翻译：磁铁结构由燃烧驱动高压实
公开(公告)号：US09224526B1
公开(公告)日：2015-12-29
申请号：US13114716
申请日：2011-05-24
申请人： Karthik Nagarathnam , Dennis W. Massey
发明人： Karthik Nagarathnam , Dennis W. Massey
IPC分类号： H01F1/032 , H01F1/055
CPC分类号： H01F1/0555 , H01F1/032 , H01F1/0558
摘要： A neo magnet is constructed by mixing a neo magnet powder with about 1% added two-part electrical insulating resin powder. The mixed powders are placed in a die and precompacted under about 20 tsi when filling a combustion chamber with a pressurized combustible gas and air mixture. The gas is ignited and rapidly drives a punch in to the die forming a solid magnet having a density of 6.1 g/cm3 or more. The solid magnet is heat treated to cure the resin and is coated with a polymer, zinc, aluminum or gold. Before precompacting a lubricated core rod in place in the die producing a thin-walled, neo ring magnet having a length to wall thickness aspect ratio.
摘要翻译：新磁体通过将新磁体粉末与约1％的两部分电绝缘树脂粉末混合而构成。将混合粉末放置在模具中并在约20tsi下预加压，当用加压的可燃气体和空气混合物填充燃烧室时。气体被点燃并迅速地将模具冲入模具中，形成密度为6.1g / cm 3或更高的固体磁体。固体磁体经过热处理以固化树脂，并涂覆有聚合物，锌，铝或金。在预先将润滑的芯棒预压在模具中的适当位置，产生具有长度与壁厚之比的薄壁的新环磁体。

3. 发明授权

US08999230B1 Near net shape fabrication of high temperature components using high pressure combustion driven compaction process 有权
标题翻译：使用高压燃烧驱动压实工艺的高温部件的近净形状制造
公开(公告)号：US08999230B1
公开(公告)日：2015-04-07
申请号：US12383948
申请日：2009-03-30
申请人： Karthik Nagarathnam , Donald Trostle , Dennis Massey
发明人： Karthik Nagarathnam , Donald Trostle , Dennis Massey
IPC分类号： B22F1/00 , B22F1/02 , B22F3/23
CPC分类号： B22F3/23 , B22F3/08 , B22F2998/10 , C22C1/045 , C22C27/00 , C22C27/04 , B22F3/10
摘要： New net shape strength retaining high temperature alloy parts are formed from fine metallurgical powders by mechanically blending the powders and placing them in die, placing a piston in the die, extending the piston into a driving chamber, filling the chamber with CH4 and air and compressing the powders with the filling pressure. Igniting gas in the chamber drives the piston into the cavity, producing pressures of about 85 to 150 tsi, compacting the powders into a near net shape alloy part, ready for sintering at 2300° C. without shrinking. The alloy parts are Re, Mo—Re, W—Re, Re—Hf—HfC, Re—Ta—Hf—HfC, Re—Mo—Hf—HfC, Mo—Re—Ta, Mo—Re-f-HfC, W—Re—Hf—HfC, W—Re—Ta—Hf—HfC or W—Re—Mo—Hf alloys.
摘要翻译：通过机械混合粉末并将它们放置在模具中，将活塞放置在模具中，将活塞延伸到驱动室中，用CH4和空气填充腔体并压缩，从而由细小的冶金粉末形成新的净形状强度的高温合金部件具有填充压力的粉末。在室内点燃气体将活塞驱动到空腔中，产生约85至150tsi的压力，将粉末压实成近净形状的合金部件，准备在2300℃下烧结而不收缩。合金部分为Re，Mo-Re，W-Re，Re-Hf-HfC，Re-Ta-Hf-HfC，Re-Mo-Hf-HfC，Mo-Re-Ta，Mo-Re-f-HfC， W-Re-Hf-HfC，W-Re-Ta-Hf-HfC或W-Re-Mo-Hf合金。

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