Metal casting device and metal casting method using the same

A metal casting method of casting a metal comprising the steps of casting a metal having a structure in which a crucible (2) and a casting mold (3) are provided in an interior portion of a casting chamber (1) capable of controlling an internal pressure, providing an electrode rod (10) for melting a metal (4) mounted on said crucible (2) in accordance with an arc discharge is provided above said crucible (2), said crucible (2) is tiltable around a supporting shaft (6) in such a manner as to pour the metal (4) melted on the crucible (2) into a casting port (5) of said casting mold (3), said supporting shaft (6) is positioned in a side of an outflow end portion of said crucible (2) close to said casting port (5), and is provided at a position at which a clearance between said metal (4) and a front end of said electrode rod (10) is kept substantially constant after the melting of the metal (4) in accordance with the arc discharge on said crucible (2) is started and the melting of said metal (4) makes progress and until the metal (4) in the melting state fluidizes and drops down due to the tilting of said crucible (2), and providing a tilting means (7) for drawing up a non-outflow end portion to an upper side so as to tilt the crucible is provided in a side of the non-outflow end portion of said crucible (2),

• wherein an electric voltage is applied between said metal (4) and said electrode rod (10) so as to generate an arc discharge after mounting the metal (4) on said crucible (2), said crucible (2) is tilted at a timing that said metal (4) is melted so as to become in a state of capable of fluidizing, and the arc discharge is kept between the metal (4) in the melting state and the front end of said electrode rod (10) even during a period that the metal (4) in the melting state fluidizes on said crucible (2) so as to drop down at a time of pouring the metal (4) in the melting state into the casting port (5) of said casting mold (3).