MANUFACTURE OF SINGLE CRYSTAL BLADE FOR GAS TURBINE

PURPOSE:To cast a complex shaped single crystal blade for a gas turbine having a protruding part. CONSTITUTION:A mold corresponding to a structure provided with a crystal growth promoting passage 1a of a triangle plate extending to the side of a platform part 12 on the angle of the blade surface of...

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Bibliographische Detailangaben
Hauptverfasser:	IIJIMA KATSUMI, ISHIDA TADAMI, KANO KIMIO, SAITO TOSHIAKI, HIRANE TERUO, MATSUZAKI HIROYUKI, YOSHINARI AKIRA, OKAYAMA AKIRA, ICHIGE MAKOTO, WADA KATSUO
Format:	Patent
Sprache:	eng
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS ENGINE PLANTS IN GENERAL FOUNDRY MOULDING GAS-TURBINE PLANTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES PERFORMING OPERATIONS POWDER METALLURGY STEAM ENGINES TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE:To cast a complex shaped single crystal blade for a gas turbine having a protruding part. CONSTITUTION:A mold corresponding to a structure provided with a crystal growth promoting passage 1a of a triangle plate extending to the side of a platform part 12 on the angle of the blade surface of the blade part 8 to the platform part 12 surface is used in an integrated construction blade provided with a column blade part 8, a platform part 12 extending from the root of the blade part 8 in lateral direction, a block shaped shank part 9 extending downward from the platform 12, a block shaped dovetail 10 extending in lateral direction below the shank part 9, and a curbed plate shaped seal part 11 protruding from the shank part 9 side surface The mold is provided on a water cooling chill plate with the blade part 8 orientated downward, Ni group alloy fusion which is filled in the mold is gradually solidified in one direction upward from the water cooling chill plate so as to cast a single crystal tissue. It is thus possible to form single crystal on the platform protruding part by the crystal growth promoting passage.