| 摘要 |
PROBLEM TO BE SOLVED: To supply a fixed quantity of molten metal, typically a magnesium having high combustibility without causing error as much as possible, into a mold, etc., and without exposing the metal to the atmosphere. SOLUTION: A closed vessel 2 forming a pressurized chamber 3 in a furnace 1 is disposed and the molten metal in the furnace 1 is taken into the pressurized chamber 3 by operating a suction valve 7 and opening a taking-in hole 4. Successively, the taking-in hole 4 is closed, and inert gas is poured into the pressurized chamber 3. In this way, when the pressure of the inert gas acting on the pressurized chamber 3 reaches to a setting value, an opening part at one end of an exhaust flow passage 5 is opened for a fixed time by operating an exhausting valve 8 while keeping the taking-in hole 4 closed. Then, while holding the pressure of the inert gas acting on the pressurized chamber 3 constant, the molten metal is pushed out into the exhaust flow passage 5 from the pressurized chamber 3 at the held constant pressure. Thus, the molten metal of the fixed quantity in the pressurized chamber 5 can be supplied into a molten metal supplying object D, such as the mold, through the exhaust flow passage 5.
|
