B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
22/166, 22/80
B22D 37/00 (2006.01) B22D 39/00 (2006.01)
Patent
CA 1089625
ABSTRACT OF THE DISCLOSURE A method for pouring a predetermined amount of molten metal into molds and controlling the change in the amount of the poured molten metal consists in the steps of pouring a predetermined amount of molten metal into molds, measuring a distance between the surface of the molten metal in the mold and a level change detector to obtain an electric signal representative of said distance, calculating the difference between a predetermined reference value and that of the electric signal and producing an output signal of a magnitude and tendency to negate the difference, and operating a control motor in accordance with the output signal for causing a displacement of a needle valve thereby to control the change in amount of the molten metal received by the molds. An apparatus for pouring a constant amount of molten metal into molds has a pouring conduit provided at its one end with an outlet and at its other end with an overflow, a tiltable intermediate conduit or trough disposed for receiving molten metal from the outlet and having at its one end its own outlet, and a guide conduit adapted to receive the molten metal from the outlet of the intermediate conduit and to direct it to the molds. The pouring conduit has means for regulating the rate of supply of molten metal constant, while the guiding conduit is adapted to be rotated at a suitable moment for switching the metal supply from one to the next mold.
273194
Koga Masaharu
Tokunaga Kouichi
Fetherstonhaugh & Co.
Hachinohe Smelting Co. Ltd.
Mitsui Kinzoku Engineering Service Co. Ltd.
Mitsui Mining & Smelting Co. Ltd.
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