| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 161 | METHOD OF REMOVING CASTING DEFECTS | EP03702835.4 | 2003-02-04 | EP1478482A2 | 2004-11-24 | FERNIHOUGH, John; HÖBEL, Matthias; KONTER, Maxim |
| A method is disclosed for removing casting defects (5) from an article (1) with an oriented microstructure. The method comprises the steps of locating at least one casting defect (5) and melting the casting defect (5) locally by a heat source (7) to a depth at least as great as the casting defect (5) itself. Subsequently the molten material is solidified epitaxially with respect to the surrounding oriented microstructure of the article (1) in a way that the resulting solidified area is substantially free of any defect. |
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| 162 | Solidification of an article extension from a melt using an integral mandrel and ceramic mold | EP97304563.6 | 1997-06-26 | EP0815990B1 | 2001-02-07 | Bewlay, Bernard Patrick; Jackson, Melvin Robert; Ritter, Ann Melinda; Demo, Wayne Alan; Ferrigno, Stephen Joseph |
| 163 | Method for forming an article extension by melting of an alloy preform in a ceramic mold | EP97304566.9 | 1997-06-26 | EP0815992B1 | 2001-01-24 | Jackson, Melvin Robert; Bewlay, Bernard Patrick; Ritter, Ann Melinda |
| A method for providing an integral extension on an article comprising the steps of: (a) 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 having a superalloy composition and a directionally oriented crystal structure. (b) attaching a mandrel (200) to the extension bonding surface, the mandrel having 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. (c) forming a ceramic mould (300) over the outer surface of the mandrel and a portion of the outer surface of the extension end. The mould having a cavity with a shape that is defined by the mandrel and defines the shape of the integral extension. (d) removing the mandrel (180). (e) inserting an alloy preform (500) having an alloy composition that is compatible with the superalloy composition into the mould cavity and melting the preform under controlled conditions by application of external heating. The article, alloy and mould being oriented either prior to or during the melting so that the molten alloy contacts the extension bonding surface for a time sufficient to permit the extension bonding surface to be heated by and interact with the molten alloy as a microstructure growth seed. (f) cooling the extension end (700) under controlled thermal conditions so as to cause the molten alloy to solidify on the growth seed at an interface between them that moves from the extension bonding surface into the molten alloy, as an integral extension that conforms to the shape of the mould cavity and has a directionally oriented microstructure that is compatible with the microstructure and is an epitaxial extension of the extension end. The controlled thermal conditions comprising 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 are a method in which the article is an airfoil and a method in which the ceramic mould is preformed. | ||||||
| 164 | Method for forming an article extension by melting of an alloy preform in a ceramic mold | EP97304566.9 | 1997-06-26 | EP0815992A1 | 1998-01-07 | Jackson, Melvin Robert; Bewlay, Bernard Patrick; Ritter, Ann Melinda |
A method for forming integral extensions on the end (4) of directionally oriented, superalloy articles, such as airfoil blading members or other components used in gas turbine or other turbine engines. An extension is formed directly on an article by melting a compatible alloy preform (82) within a ceramic mold (16), followed by cooling of the end under controlled conditions sufficient to cause an integral extension to solidify on the article. A ceramic mold is attached on the end of the article with a mold.cavity that generally defines the shape of the extension to be formed. The mold may be formed in situ on a removable mandrel, or preformed and attached to the subject article. Extensions formed by the method of this invention have a microstructure that is continuous and compatible with that of the article. Such microstructures may include epitaxial growth of the extension from the microstructure of the article. The method establishes a temperature gradient within the article during solidification that may be further controlled by auxiliary heating and/or cooling of the article and/or extension during the practice of the method. |
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| 165 | Method for forming an article extension by melting of a mandrel in a ceramic mold | EP97304565.1 | 1997-06-26 | EP0815991A1 | 1998-01-07 | Bewlay, Bernard Patrick; Jackson, Melvin Robert; Ritter, Ann Melinda |
A method for forming integral extensions on the end (4) of directionally oriented, superalloy articles (2), such as airfoil blading members or other components used in gas turbine or other turbine engines. An extension is formed directly on an article by melting a portion or end of the article having an attached integral mandrel (12) within a ceramic mold (16), followed by cooling of the end under controlled conditions sufficient to cause an integral extension to solidify on the article. A ceramic mold is attached on the end of the article over the integral mandrel with a mold cavity that generally defines the shape of the extension to be formed. The mold may be formed in situ on the mandrel, or preformed and attached to the subject article over the mandrel. Extensions formed by the method of this invention have a microstructure that is continuous and compatible with that of the article. Such microstructures may include epitaxial growth of the extension from the microstructure of the article. The method establishes a temperature gradient within the article during solidification that may be further controlled by auxiliary heating and/or cooling of the article and/or extension during the practice of the method. |
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| 166 | Verfahren und Vorrichtung zur Reparatur von Triebwerksschaufeln | EP91120539.1 | 1991-11-29 | EP0493685A1 | 1992-07-08 | Wortmann, Jürgen, Dr.; Staub, Fritz; Walser, Bruno, Dr. |
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Reparatur von Triebwerksschaufeln und eine Vorrichtung zur Durchführung des Verfahrens, womit besonders einkristalline Schaufeln restauriert werden können. Dazu wird aus dem unversehrten Schaufelbereich ein einkristalliner Schaufelrest mit geringer Defektdichte präpariert und in wenigen Sekunden die heiße Gießform für den defekten Schaufelbereich mit dem Schaufelrest gekoppelt, die Schmelze auf den Schaufelrest gegossen und mit einem an sich bekannten Temperaturprogramm ein epitaktisches einkristallines Erstarren der Schmelze auf dem Schaufelrest erzeugt. |
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| 167 | METHOD OF REMOVING CASTING DEFECTS | PCT/IB0300362 | 2003-02-04 | WO03072284A2 | 2003-09-04 | FERNIHOUGH JOHN; HOEBEL MATTHIAS; KONTER MAXIM |
| A method is disclosed for removing casting defects (5) from an article (1) with an oriented microstructure. The method comprises the steps of locating at least one casting defect (5) and melting the casting defect (5) locally by a heat source (7) to a depth at least as great as the casting defect (5) itself. Subsequently the molten material is solidified epitaxially with respect to the surrounding oriented microstructure of the article (1) in a way that the resulting solidified area is substantially free of any defect. | ||||||
| 168 | METHODS AND SYSTEMS FOR JOINING MATERIALS | PCT/US2013057031 | 2013-08-28 | WO2014051919A2 | 2014-04-03 | ZHAO QI; ZABALA ROBERT JOHN; CRETEGNY LAURENT; SCHOONOVER JEFFREY JON; MEYER MARK KEVIN; LAURIA KEITH ANTHONY; CATLIN WILLIAM R |
| A method is provided for joining a filler material to a substrate material. The method includes melting the filler material within a melting chamber of a crucible such that the filler material is molten, holding the filler material within the melting chamber of the crucible by electromagnetically levitating the filler material within the melting chamber, and releasing the filler material from the melting chamber of the crucible to deliver the filler material to a target site of the substrate material. | ||||||
| 169 | METHOD OF REMOVING CASTING DEFECTS | PCT/IB0300362 | 2003-02-04 | WO03072284A8 | 2004-10-07 | FERNIHOUGH JOHN; HOEBEL MATTHIAS; KONTER MAXIM |
| A method is disclosed for removing casting defects (5) from an article (1) with an oriented microstructure. The method comprises the steps of locating at least one casting defect (5) and melting the casting defect (5) locally by a heat source (7) to a depth at least as great as the casting defect (5) itself. Subsequently the molten material is solidified epitaxially with respect to the surrounding oriented microstructure of the article (1) in a way that the resulting solidified area is substantially free of any defect. | ||||||
