| 摘要 |
PURPOSE: A melt control system for centrifugal casting is provided to manufacture sound pipes by controlling initial injection amount and total casting time according to inner and outer diameters of the pipe and injection amount in manufacturing a long pipe having length of 1,350 mm or more by centrifugal casting method. CONSTITUTION: The melt control system for centrifugal casting comprises a ladle(1) for supplying melt to sprue; a balance(2) for measuring melt quantity in the ladle installed at the ladle to measure the quantity of melt supplied from the ladle to the sprue; a sprue(3) for temporarily storing the melt by receiving the melt from the ladle and injecting the melt into mold; a sprue pool(4) formed on the sprue to restrict supplying of a small quantity of the melt during initial injection of the melt; a balance(5) for measuring the quantity of melt in the sprue installed at the sprue to measure the quantity of the melt inside the sprue; and a runner(6) mounted between the sprue and centrifugal casting mold(8), wherein the runner is clamped by screw(7) so that the runner is easily replaced according to size of a pipe manufactured, wherein the balance for measuring melt quantity in the ladle is installed at the upper part of handle for the ladle, capable of realtime transmitting weight data to an external computer and capable of zero correcting initial weight of the ladle, wherein the sprue pool has a depth of 33 to 38 mm when radius of curvature is 200 mm, and wherein the balance for measuring melt quantity in the sprue is installed at the lower part of the sprue, capable of realtime transmitting weight data to an external computer and capable of zero correcting initial weight of the sprue.
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