CASTING METHOD FOR ACTIVE METAL

In this casting method for an active metal, in an induction melting furnace (3) using a water-cooled copper crucible (2), a thin ingot (S) of an active metal is cast by tapping a melt M from a tapping hole (5) provided in a base section of the crucible (2) into a mold (4), wherein, when casting is p...

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Bibliographische Detailangaben
Hauptverfasser:	ISHIDA, Hitoshi, MORIKAWA, Yuzo, IKEDA, Shushi, MATSUWAKA, Daisuke
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES FURNACES FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL HEATING KILNS LIGHTING MECHANICAL ENGINEERING OPEN SINTERING OR LIKE APPARATUS OVENS PERFORMING OPERATIONS POWDER METALLURGY RETORTS TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	In this casting method for an active metal, in an induction melting furnace (3) using a water-cooled copper crucible (2), a thin ingot (S) of an active metal is cast by tapping a melt M from a tapping hole (5) provided in a base section of the crucible (2) into a mold (4), wherein, when casting is performed under casting conditions in which the ingot has a diameter (D) of at least 10 mm, the ratio (H/D) of the height H of the ingot to the diameter D of the ingot is at least 1.5, and the weight of the melt M tapped in casting is no more than 200 kg, the temperature of the melt M during casting is set to be higher than the melting point of the active metal and casting is performed while the casting velocity V (mm/s), which is the velocity at which the casting advances in the mold 4, is controlled so that the relationship with the height H of the ingot satisfies V ≤ 0.1H by adjusting the opening diameter of the tapping hole 5.