| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and an apparatus for control of pouring from a molten metal furnace in a gravity casting method, by which method and apparatus, poor casting and a waste of poured molten metal can be prevented by accurately performing the control of the pouring from the molten metal furnace, and further to provide a method for manufacturing a metallic die for vulcanizing a tire to be manufactured by the method for control of the pouring. SOLUTION: When molten metal is poured from the molten metal furnace 1, the molten metal W of aluminum, etc. is poured by gradually tilting the molten metal furnace 1 by means of a tilt control apparatus 8. In this case, the weight A of the molten metal in a gutter 2 and the weight B of the molten metal in a supply hopper 3 are measured by means of a gravimeter 9 of the gutter 2 and a gravimeter 10 or a sensor 11 for detecting the molten metal quantity of the supply hopper 3. Then, before the molten metal in the supply hopper 3 reaches a required weight G, the preliminarily calculated value of the supplied molten metal is compared by calculation (subtraction) by means of a control unit 12 with the weight (the molten metal weight A + the molten metal B) measured by the gravimeters 9, 10. The molten metal furnace 1 is controlled based on the calculated value so as to stop the pouring from the molten metal furnace 1 by tilting the molten metal furnace 1 via a tilting control device 8 so as to tilt to a required tilting angle. COPYRIGHT: (C)2007,JPO&INPIT |
