Verfahren zur Herstellung monokristalliner Schaufeln

A method of manufacturing monocrystalline cast blades of cubic structure comprises effecting a directional solidification. A single grain crystal is selected by means of a selection device 1 at the outlet of which a single grain is to be found, of predetermined orientation and having an direction co...

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Bibliographische Detailangaben
Hauptverfasser:	THERET, JEAN-MARC CLEMENT FRANCIS, VERSAILLES, FR, GRAMMAGNAC, JACQUES LEOPOLD EMILE, GUIGNES, FR, ALESSANDRI, MARTIAL GERARD, LA VILLE DU BOIS, FR
Format:	Patent
Sprache:	ger
Schlagworte:	AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE APPARATUS THEREFOR CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CHEMISTRY CRYSTAL GROWTH METALLURGY PERFORMING OPERATIONS POWDER METALLURGY PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE REFINING BY ZONE-MELTING OF MATERIAL SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE SINGLE-CRYSTAL-GROWTH TRANSPORTING UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL
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Beschreibung
Zusammenfassung:	A method of manufacturing monocrystalline cast blades of cubic structure comprises effecting a directional solidification. A single grain crystal is selected by means of a selection device 1 at the outlet of which a single grain is to be found, of predetermined orientation and having an direction coincident with the vertical. It is arranged that the axis 12 of each portion 8 will be oriented in a direction of the selected crystal. The blades may be cast in a cluster by making a selected grain grow in a common vertical germination column 6, and the solidification front is made to progress continuously from the vertical column 6 up to the portions to be cast (18, fig 2) and along inclined branches 14 stemming from the germinating column 6.