Method of deoxidation casting and deoxidation casting machine
AssigneeNissin Kogyo Co., Ltd.
InventorsKeisuke Ban, Koichi Ogiwara
Life of this patent
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Abstract
Deoxidation casting machine, in which a deoxidizing compound reacts with a molten metal so as to deoxidize an oxide film formed on a surface of the molten metal. The machine includes a casting die having a molten metal inlet, a cavity into which a molten metal is poured from the molten metal inlet and a feeder head provided between the molten metal inlet and the cavity. A rate of cooling the molten metal in the feeder head is lower than that in the cavity.
Claims18
A deoxidation casting machine, structured and arranged for gravity casting, and in which a deoxidizing compound reacts with a molten metal so as to deoxidize an oxide film formed on a surface of the molten metal, comprising a casting die having a molten metal inlet, a cavity into which a molten metal is poured from the molten metal inlet and a feeder head provided between the molten metal inlet and the cavity, wherein rate of cooling the molten metal in the feeder head is lower than that in the cavity, and a cavity constituting member of the casting die being separable from a feeder head constituting member thereof, and the cavity constituting member, in which the molten metal is solidified, is separated from the feeder head constituting member while the molten metal in the feeder head is not solidified, wherein the cavity constituting member has a thermal conductivity which produces a cooling rate of the molten metal in the cavity to be at least 500° C./min. and the feeder head constituting member has a thermal conductivity which provides a cooling rate of the molten metal in the feeder head to be less than 500° C./min.
A deoxidation casting machine, in which a deoxidizing compound reacts with a molten metal so as to deoxidize an oxide film formed on a surface of the molten metal, comprising a casting die having a molten metal inlet, a cavity into which a molten metal is poured from the molten metal inlet and a feeder head provided between the molten metal inlet and the cavity, wherein rate of cooling the molten metal in the feeder head is lower than that in the cavity, and means for discharging the molten metal is provided to the feeder head, wherein the molten metal in the feeder head, which is not solidified, is discharged outside when the molten metal in the cavity is solidified, wherein the cavity constituting member has a thermal conductivity which produces a cooling rate of the molten metal in the cavity to be at least 500° C./min. and the feeder head constituting member has a thermal conductivity which provides a cooling rate of the molten metal in the feeder head to be less than 500° C./min.
A deoxidation casting machine, in which a deoxidizing compound reacts with a molten metal so as to deoxidize an oxide film formed on a surface of the molten metal, comprising a casting die having a molten metal inlet, a cavity into which a molten metal is poured from the molten metal inlet and a feeder head provided between the molten metal inlet and the cavity, wherein rate of cooling the molten metal in the feeder head is lower than that in the cavity, and means for discharging the molten metal is provided to the feeder head, wherein the molten metal in the feeder head, which is not solidified, is discharged outside when the molten metal in the cavity is solidified, wherein:
- the means for discharging the molten metal comprises a sliding member and a pusher,
- the pusher is arranged to move the sliding member from a first position, at which the sliding member opens a gate of the cavity, to a second position, at which the sliding member closes the gate, and
- the pusher is arranged to move the sliding member to a third position, at which unused metal may be taken out of the feeder head.
Dependencies are inferred from the claim text.