Kobe Steel, Ltd.

Kabushiki Kaisha Kobe Seiko Sho

Yuzo Morikawa

Shushi Ikeda

Hitoshi Ishida

Daisuke Matsuwaka

A casting method of an active metal includes, in an induction melting furnace using a water-cooled crucible, tapping a molten metal into a mold from a tapping hole provided at a bottom of the water-cooled copper crucible to cast an ingot of the active metal. In conducting the casting under a casting condition in which the ingot has a diameter (D) of 10 mm or more and a ratio (H/D) of an ingot height H to the ingot diameter D of 1.5 or more and a weight of the molten metal tapped in the casting is 200 kg or less, a temperature of the molten metal in the casting is set to be higher than the melting point of the active metal and a casting velocity V (mm/sec) is controlled to satisfy V&#x2264;0.1H in relation with the ingot height H by adjusting an opening diameter of the tapping hole.

Growing community of inventors

Hyogo, Japan

Yuzo Morikawa