Through the gutter from the production mannered null hot water supply reactor of the die for tire granulated powder which, is produced hot spring control manner and its device from the hot water supply reactor in gravitational force

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