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    • 4. 发明公开
    • Verfahren zur Herstellung einer Turbinenschaufel
    • EP2127781A1
    • 2009-12-02
    • EP08009847.8
    • 2008-05-29
    • SIEMENS AKTIENGESELLSCHAFT
    • Ahmad, Fathi
    • B22D19/08B22D19/10
    • B22D19/08B22D19/10
    • Die Erfindung betrifft ein Verfahren zur Herstellung einer Turbinenschaufel (2, 5), bei dem zunächst eine innere Struktur (1, 6) der Turbinenschaufel (2, 5) gefertigt und dann die innere Struktur (1, 6) mit einer Umhüllung (4, 10) unter Bildung einer äußeren Form der Turbinenschaufel (2, 5) umgossen wird.
    • 该方法包括制造涡轮铲(5)的内部结构(6),然后在形成涡轮铲的外部形式的情况下用盖(10)重新铸造。 内部结构和盖由不同的金属和/或合金制成。 内部结构由具有高抗蠕变性的材料制成,并且该盖由具有高氧化稳定性的材料制成。 冷却通道(7)在内部结构的制造期间形成,其在冷却流体被冷却通道引导的再烧制期间被冷却。 该方法包括制造涡轮铲(5)的内部结构(6),然后在形成涡轮铲的外部形式的情况下用盖(10)重新铸造。 内部结构和盖由不同的金属和/或合金制成。 内部结构由具有高抗蠕变性的材料制成,并且该盖由具有高氧化稳定性的材料制成。 冷却通道(7)在内部结构的制造期间形成,其在冷却流体被冷却通道引导的再烧制期间被冷却。 陶瓷掩蔽元件在重新雕刻内部结构之前固定在内部结构上,以便重新加盖盖中的通道。 通道(9)在盖子上形成有遮蔽元件并与内部结构中的冷却通道连通。 通道在盖中形成有扩散开口。 内部结构被模制。 包括用于涡轮铲的修理过程的独立权利要求。
    • 7. 发明授权
    • Method for forming an article extension by melting of a mandrel in a ceramic mold
    • 一种用于通过在一个陶瓷铸型熔化心轴产生附着过程
    • EP0815991B1
    • 2001-01-31
    • EP97304565.1
    • 1997-06-26
    • GENERAL ELECTRIC COMPANY
    • Bewlay, Bernard PatrickJackson, Melvin RobertRitter, Ann Melinda
    • B22D27/04B22D19/10C30B11/00C30B29/52
    • B22D23/06B22D19/10B23P6/007C30B11/00C30B29/52Y10T29/49318
    • A method for providing an integral extension on an article comprises selecting an article (100) comprising an extension end, an extension bonding surface and an outer surface defined by the cross sectional shape. The extension end also has a superalloy composition and a directionally oriented crystal structure. A mandrel (200) is attached to the extension bonding surface. The mandrel has a cross sectional shape that is compatible with the cross sectional shape of the extension end and an outer surface that communicates with the outer surface of the extension end. The mandrel also has an alloy composition that is compatible with the superalloy composition. A ceramic mould (300) is formed over the outer surface of the mandrel and a portion of the outer surface of the extension end. The mould has a cavity with a shape that is defined by the mandrel and defines the shape of the integral extension. The mandrel is melted under controlled conditions by application of an external heating means, the article, mandrel and mould being oriented either prior to or during the melting so that the molten mandrel contacts the extension bonding surface, for a time sufficient to permit the extension bonding surface to be heated by and interact with the molten mandrel as a microstructure growth seed. The extension end (700) is cooled under controlled thermal conditions so as to cause the molten mandrel to solidify on the growth seed, at an interface between them that moves from the extension bonding surface into the molten mandrel, as an integral extension that conforms to the shape of the mould cavity and has a microstructure that is compatible with the microstructure of the extension end. The controlled thermal conditions comprise maintaining a temperature gradient within the article such that the temperature is highest at the interface and decreases within the article as a function of increasing distance from the interface. Also claimed is a second method for providing an integral extension on an article.