MANUFACTURE OF MOLDING DIE HAVING HEATING/COOLING HOLE AND MOLDING DIE

Japanese Patent JP2935404

B2

PURPOSE: To prevent the defective formation such as defective surfaces of formed articles, deformation, and seizure by executing the compression forming of the molding die to cast in the metallic pipe which is the passage for the heating or cooling medium under the high temperature and pressure.
CONSTITUTION: A pipe for adjusting the temperature which is preliminarily worked to the prescribed shape is assembled to the prescribed position of the mold, and the molten metal is poured therein to execute the cast-in filling. After solidification, the molding die 1 is taken out of the mold, and placed in a device 15 where the compression forming is possible under the high temperature and pressure condition. The device 15 is preferably the device to realize the hot isostatic compression using the inert gas. The pressurizing device 15 is decompressed by a decompressing device through a valve 16. Then, the valve 16 is closed, and the molding die 1 is heated up to a specific temperature by a heater 18. At the same time, the inert gas is introduced into the pressurizing device 15 from the valve 17 to be pressurized to a specific value. After the compression forming, the pressurizing device 15 is cooled, and the heat is released into the atmosphere and the molding die 1 is taken out.

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OKAMOTO AKIO

JP3136994A

August 16, 1999

March 01, 1994

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UBE KOSAN KK

B22D19/00; B22C9/06; B22D17/22; B22D19/06; B22D27/04; B22D29/00; B29C33/02; B29C33/38; (IPC1-7): B22D19/06; B22C9/06; B22D19/00; B22D29/00; B29C33/02; B29C33/38

JP6320252A
JP3189061A
JP399767A
JP60133966A

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