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1. 发明授权

US06315941B1 Ceramic core and method of making 有权
标题翻译：陶瓷芯和制作方法
公开(公告)号：US06315941B1
公开(公告)日：2001-11-13
申请号：US09339293
申请日：1999-06-24
申请人： Ronald J. Keller , Rodney S. Haaland , Julie A. Faison
发明人： Ronald J. Keller , Rodney S. Haaland , Julie A. Faison
IPC分类号： C04B3584
CPC分类号： B22C9/10 , B22C3/00
摘要： Method of making a ceramic core for casting an industrial gas turbine engine airfoil having a large airfoil pitch by forming a precursor core (chill) of smaller dimensions than the final desired ceramic core, firing the chill, applying a thin ceramic skin to the fired chill to form a coated core of final dimensions, and then firing the coated core. Firing of the thin ceramic skin reduces airfoil pitch shrinkage resulting from the latter firing operation to reduce overall core dimensional tolerance variations.
摘要翻译：制造陶瓷芯的方法，用于通过形成具有比最终期望的陶瓷芯更小的尺寸的前体核（冷却）来铸造具有大翼型节距的工业燃气涡轮发动机翼型，烧制冷却，将薄的陶瓷表面施加到烧制的冷却以形成最终尺寸的涂覆芯，然后焙烧涂覆的芯。烧结薄陶瓷表皮减少了由后一次焙烧操作引起的翼型间距收缩，以减小整体的芯尺寸公差变化。

2. 发明授权

US5977007A Erbia-bearing core 失效
标题翻译：含Erbia的核心
公开(公告)号：US5977007A
公开(公告)日：1999-11-02
申请号：US960996
申请日：1997-10-30
申请人： Eliot S. Lassow , David L. Squier , Julie A. Faison
发明人： Eliot S. Lassow , David L. Squier , Julie A. Faison
IPC分类号： B22C9/04 , B22C1/00 , B22C9/10 , B22D29/00 , B22C1/02
CPC分类号： B22C9/10 , B22C1/00 , B22D29/001
摘要： A ceramic core that includes, prior to core sintering, erbia filler material alone or admixed with a second ceramic filler material, such as alumina, and a binder to provide a core that is relatively non-reactive with superalloys used in the manufacture of turbine blades, dimensionally stable during directional solidification (DS) for extended times, removable by chemcial leaching techniques, and having enhanced X-ray detectable during post-cast inspection operations. After core sintering, the ceramic core has a microstructure comprising an erbia-alumina garnet phase and an unreacted ceramic filler phase (e.g. alumina).
摘要翻译：一种陶瓷芯，其在核心烧结之前包括单独的或与第二陶瓷填料材料（例如氧化铝）混合的铒填料，以及粘合剂，以提供与用于制造涡轮叶片的超级合金相对不反应的芯在长时间的定向凝固（DS）中尺寸稳定，通过化学浸出技术可去除，并且在后期检查操作中可以检测到增强的X射线。在芯烧结之后，陶瓷芯具有包含铒 - 氧化铝石榴石相和未反应的陶瓷填料相（例如氧化铝）的微结构。

3. 发明授权

US5679270A Method for removing ceramic material from castings using caustic medium with oxygen getter 失效
标题翻译：使用带有吸气剂的苛性介质从铸件中去除陶瓷材料的方法
公开(公告)号：US5679270A
公开(公告)日：1997-10-21
申请号：US673019
申请日：1996-07-01
申请人： Thomas J. Thornton , Julie A. Faison , Neil E. Paton
发明人： Thomas J. Thornton , Julie A. Faison , Neil E. Paton
IPC分类号： B22D29/00
CPC分类号： B22D29/002 , Y10T29/49341
摘要： A method of removing ceramic material, such as for example a ceramic core, from a metallic cast or other component involves contacting the metallic cast component and a caustic ceramic leaching medium at elevated temperature for a time effective to substantially remove the ceramic material from the component and providing an oxygen getter in the caustic ceramic leaching medium in an amount effective to avoid deleterious surface corrosion of the component while the ceramic material is being removed therefrom.
摘要翻译：从金属铸造或其他组件去除陶瓷材料（例如陶瓷芯）的方法包括使金属铸造组件和苛性陶瓷浸出介质在升高的温度下接触一段时间，以有效地从组分中除去陶瓷材料并且在苛性陶瓷浸出介质中提供氧气吸收剂，其量有效地避免了陶瓷材料被除去时该组分的有害表面腐蚀。

4. 发明授权

US06578623B2 Ceramic core and method of making 有权
公开(公告)号：US06578623B2
公开(公告)日：2003-06-17
申请号：US09968654
申请日：2001-10-01
申请人： Ronald J. Keller , Rodney S. Haaland , Julie A. Faison
发明人： Ronald J. Keller , Rodney S. Haaland , Julie A. Faison
IPC分类号： B22C910
CPC分类号： B22C9/10 , B22C3/00
摘要： Method of making a ceramic core for casting an industrial gas turbine engine airfoil having a large airfoil pitch by forming a precursor core (chill) of smaller dimensions than the final desired ceramic core, firing the chill, applying a thin ceramic skin to the fired chill to form a coated core of final dimensions, and then firing the coated core. Firing of the thin ceramic skin reduces airfoil pitch shrinkage resulting from the latter firing operation to reduce overall core dimensional tolerance variations.

5. 发明授权

US5706881A Heat treatment of superalloy casting with partial mold removal 失效
标题翻译：超级合金铸造的热处理，部分脱模
公开(公告)号：US5706881A
公开(公告)日：1998-01-13
申请号：US801168
申请日：1997-02-18
申请人： Robert E. Grunstra , Julie A. Faison , Jacqueline B. Wahl
发明人： Robert E. Grunstra , Julie A. Faison , Jacqueline B. Wahl
IPC分类号： C22F1/02 , C30B33/00 , C30B33/02 , C22F1/10 , B22D21/06
CPC分类号： C22F1/02 , C30B29/54 , C30B33/00
摘要： A method of making a single crystal or columnar grain superalloy casting comprises casting a superalloy in a mold wherein at least one of the mold and optional core comprises an oxygen-bearing ceramic, directionally solidifying the superalloy to form a single crystal or columnar grain superalloy casting, and solution heat treating the superalloy casting. The heat treatment is conducted under an atmosphere including a carbon-bearing gas, such as a carbon monoxide and inert gas mixture, wherein the carbon-bearing gas is present in an effective amount to reduce loss of carbon from the casting during the heat treatment. The heat treatment can be conducted prior to removal of all of the mold and core, if present, such as, for example, when the cast mold is in the as-knocked out condition wherein residual mold and/or core material is present on the casting. Alternately, the heat treatment can be conducted after removal of the mold and core, if present.
摘要翻译：制造单晶或柱状晶粒超级合金铸造的方法包括在模具中铸造超合金，其中至少一个模具和任选的芯包括含氧陶瓷，定向固化超合金以形成单晶或柱状晶粒超合金铸件，并对超级合金铸件进行固溶热处理。热处理在含有碳的气体如一氧化碳和惰性气体混合物的气氛下进行，其中含碳气体以有效量存在，以减少热处理期间铸件的碳损失。热处理可以在去除所有模具和芯部（如果存在的话）之前进行，例如当铸模处于被淘汰状态时，其中残余模具和/或芯材料存在于铸件。或者，如果存在模具和芯部，则可以进行热处理。

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