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1. 发明授权

US06494250B1 Impregnated alumina-based core and method 失效
标题翻译：浸渍氧化铝为主的核心及方法
公开(公告)号：US06494250B1
公开(公告)日：2002-12-17
申请号：US09924962
申请日：2001-08-08
申请人： Gregory R. Frank , Ronald J. Keller , Rodney S. Haaland , Charles F. Caccavale , Alfred P. Kaulius, Jr.
发明人： Gregory R. Frank , Ronald J. Keller , Rodney S. Haaland , Charles F. Caccavale , Alfred P. Kaulius, Jr.
IPC分类号： B22C100
CPC分类号： C04B35/6303 , B22C9/10 , B22C9/12 , C04B35/111 , C04B35/624 , C04B41/009 , C04B41/5045 , C04B41/87 , C04B2111/00879 , C04B2235/3206 , C04B2235/3222 , C04B2235/3225 , C04B2235/6022 , C04B2235/80 , C04B2235/96 , C04B41/4539 , C04B35/10 , C04B35/117 , C04B38/00
摘要： An impregnated fired porous alumina-based ceramic core for use in an investment shell mold in the casting of molten metals and alloys wherein the core is impregnated with yttria to improve core creep resistance at elevated casting temperatures and times.
摘要翻译：一种浸渍的多孔氧化铝基陶瓷芯，用于熔融金属和合金铸造中的投资外壳模具中，其中芯浸渍有氧化钇，以提高铸造温度和时间下的耐芯蠕变性。

2. 发明授权

US5498132A Improved hollow cast products such as gas-cooled gas turbine engine blades 失效
标题翻译：改进的中空铸造产品，如气冷式燃气轮机发动机叶片
公开(公告)号：US5498132A
公开(公告)日：1996-03-12
申请号：US331747
申请日：1994-10-31
申请人： Eugene J. Carozza , Gregory R. Frank , Charles F. Caccavale , Ronald R. Robb
发明人： Eugene J. Carozza , Gregory R. Frank , Charles F. Caccavale , Ronald R. Robb
IPC分类号： B22C1/00 , B22C9/10 , F01D5/18
CPC分类号： B22C1/00 , B22C9/103 , Y10T428/1314 , Y10T428/24942
摘要： A hollow cast product such as a gas-cooled gas turbine engine blade is formed using a composite core constructed by forming a first core part determinative of the cavity size of the trailing edge blade portion from a first ceramic material and joined to a second core part determinative of the blade cavity for the blade body portion which is formed from a second ceramic material. The first and second ceramic materials can be chosen to have appropriate characteristics grain sizes, flowability, leachability, and/or reactivity characteristics taking into consideration the different dimensional restrictions imposed by the desired blade product. A tongue is formed on the adjoining edge surface of the trailing edge core part, and the trailing edge core part is then inserted into a second die and the body core part is formed, including a complementary groove member which is formed around the tongue member on the trailing edge core part. The joined trailing edge and body core parts can then be sintered to form a composite casting core. Blade trailing edge slot thicknesses of about 0.015 inches or less can be achieved.
摘要翻译：使用复合芯形成诸如气体冷却燃气涡轮发动机叶片的中空铸造产品，所述复合芯通过从第一陶瓷材料形成确定后缘叶片部分的腔体尺寸的第一芯部分并且连接到第二芯部分确定由第二陶瓷材料形成的用于叶片主体部分的叶片腔。考虑到期望的刀片产品施加的不同尺寸限制，可以选择第一和第二陶瓷材料具有适当的特性，粒度，流动性，浸出性和/或反应性特性。在后缘铁心部分的相邻的边缘表面上形成一个舌头，然后将后缘芯部件插入第二个模具中，并且形成主体芯部分，该主体芯部分包括形成在舌部件周围的互补的沟槽部件后缘芯部分。然后可以将连接的后缘和主体芯部件烧结以形成复合铸造芯。可以实现约0.015英寸或更小的刀片后缘槽厚度。

3. 发明授权

US5394932A Multiple part cores for investment casting 失效
标题翻译：用于投资铸造的多个零件芯
公开(公告)号：US5394932A
公开(公告)日：1995-03-07
申请号：US831528
申请日：1992-02-05
申请人： Eugene J. Carozza , Gregory R. Frank , Charles F. Caccavale , Ronald R. Robb
发明人： Eugene J. Carozza , Gregory R. Frank , Charles F. Caccavale , Ronald R. Robb
IPC分类号： B22C1/00 , B22C9/10
CPC分类号： B22C1/00 , B22C9/103 , Y10T428/1314 , Y10T428/24942
摘要： A composite core for a hollow gas turbine engine blade is constructed by forming a first core part determinative of the cavity size of the trailing edge blade portion from a first ceramic material and joined to a second core part determinative of the blade cavity for the blade body portion which is formed from a second ceramic material. The first and second ceramic materials can be chosen to have appropriate characteristics grain sizes, flowability, leachability, and/or reactivity characteristics taking into consideration the different dimensional restrictions imposed by the desired blade product. A tongue is formed on the adjoining edge surface of the trailing edge core part, and the trailing edge core part is then inserted into a second die and the body core part is formed, including a complementary groove member which is formed around the tongue member on the trailing edge core part. The joined trailing edge and body core parts can then be sintered to form a composite casting core.
摘要翻译：用于中空燃气涡轮发动机叶片的复合芯通过形成确定后缘叶片部分的腔体尺寸的第一芯部分与第一陶瓷材料相结合，并连接到确定叶片体的叶片腔体的第二芯部分部分由第二陶瓷材料形成。考虑到期望的刀片产品施加的不同尺寸限制，可以选择第一和第二陶瓷材料具有适当的特性，粒度，流动性，浸出性和/或反应性特性。在后缘铁心部分的相邻的边缘表面上形成一个舌头，然后将后缘芯部件插入第二个模具中，并且形成主体芯部分，该主体芯部分包括形成在舌部件周围的互补的沟槽部件后缘芯部分。然后可以将连接的后缘和主体芯部件烧结以形成复合铸造芯。

4. 发明授权

US5126082A Method of making ceramic cores and other articles 失效
标题翻译：制作陶瓷芯等制品的方法
公开(公告)号：US5126082A
公开(公告)日：1992-06-30
申请号：US583796
申请日：1990-09-17
申请人： Gregory R. Frank
发明人： Gregory R. Frank
IPC分类号： B28B1/00 , C04B35/622
CPC分类号： B28B1/007 , C04B35/622
摘要： A novel method of making a ceramic core for use in casting a metal component includes freezing a ceramic slurry comprising a ceramic powder filler, a freezable liquid and a gelling agent in a mold to form a frozen core shaped body. The frozen core shaped body is removed from the mold and thawed to room temperature. A high viscosity gel is provided in the core shaped body at room temperature that is strong enough to retain the core shape until the body can be fired to form a porous, sintered ceramic core. The gel present at room temperature may be formed as the ceramic slurry is cooled in the mold cavity to form the frozen article shaped body and/or as the frozen core shaped body is thawed to room temperature.
摘要翻译：制造用于铸造金属组分的陶瓷芯的新方法包括在模具中将包含陶瓷粉末填料，可冷冻液体和胶凝剂的陶瓷浆料冷冻以形成冷冻芯体形状体。将冷冻的芯状体从模具中取出并解冻至室温。高温粘度凝胶在室温下被提供到足够坚硬的芯体形状，直到机体被烧制以形成多孔烧结陶瓷芯。存在于室温下的凝胶可以在陶瓷浆料在模腔中冷却以形成冷冻制品成形体和/或当冷冻芯体形状体解冻至室温时形成。

5. 发明授权

US5014763A Method of making ceramic cores 失效
标题翻译：制造陶瓷芯的方法
公开(公告)号：US5014763A
公开(公告)日：1991-05-14
申请号：US277853
申请日：1988-11-30
申请人： Gregory R. Frank
发明人： Gregory R. Frank
IPC分类号： B22C9/10 , B22F3/02 , B28B1/00 , B28B1/24 , C04B35/622
CPC分类号： B28B1/007 , C04B35/622
摘要： A novel method of making a ceramic core for use in casting a metal component includes freezing a ceramic slurry comprising a ceramic powder filler, a freezable liquid and a gelling agent in a mold to form a frozen core shaped body. The frozen core shaped body is removed from the mold and thawed to room temperature. A high viscosity gel is provided in the core shaped body at room temperature that is strong enough to retain the core shape until the body can be fired to form a porous, sintered ceramic core. The gel present at room temperature may be formed as the ceramic slurry is cooled in the mold cavity to form the frozen article shaped body and/or as the frozen core shaped body is thawed to room temperature.

6. 发明授权

US4837187A Alumina-based core containing yttria 失效
标题翻译：基于氧化铝的核心包含氧化钇
公开(公告)号：US4837187A
公开(公告)日：1989-06-06
申请号：US58129
申请日：1987-06-04
申请人： Gregory R. Frank , Kenneth A. Canfield , Thomas R. Wright
发明人： Gregory R. Frank , Kenneth A. Canfield , Thomas R. Wright
IPC分类号： B22C9/04 , B22C1/00 , B22C1/04 , B22C9/10 , C04B35/111
CPC分类号： B22C9/10 , B22C1/04 , C04B35/111
摘要： A ceramic core for use in the investment casting of metals includes, prior to sintering, about 80 w/o to about 86 w/o of a ceramic filler material and about 14 w/o to about 20 w/o of a binder material. The ceramic filler material includes about 66 w/o to about 95 w/o Al.sub.2 O.sub.3 particles, about 1 w/o to about 20 w/o Y.sub.2 O.sub.3 particles, about 1 w/o to about 5 w/o of a grain growth inhibiting agent, and the balance a carbon-bearing fugitive filler material. Subsequent to sintering, the ceramic core has a microstructure characterized by the presence of substantially unreacted Al.sub.2 O.sub.3 particles having a polycrystalline composition consisting essentially of 3Y.sub.2 O.sub.3.5Al.sub.2 O.sub.3 on the surfaces of the Al.sub.2 O.sub.3 particles.

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