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Title:
MOLD HEATING/VACUUM CASTING FURNACE SYSTEM AND MANUFACTURE OF CASTING
Document Type and Number:
Japanese Patent JPH11114664
Kind Code:
A
Abstract:

To prevent considerable heat loss from a preheated mold, to facilitate the treatment of a mold and to improve solidification controllability of molten material by preparing a casting chamber communicating to the bottom of a mold preheating chamber, an annular rotating chill member which is provided within the casting chamber and divides a central opening part, and a mold elevator.

The mold M is arranged within a mold heating furnace 50 and preheated up to a suitable casting temperature. A vacuum casting chamber 22 is evacuated with a vacuum pump P1 before preheating the mold M, the mold preheating chamber 20 which communicates to the vacuum casting chamber 22 via an opened shut-off valve 24 is also evacuated up to the same extent. After heating the mold M up to the casting temperature, the elevator 40 is descended, and the preheated mold is straight carried from the mold heating furnace 50 to the vacuum casting chamber 22. The shut-off valve 24 is closed to isolate the mold preheating chamber 20 from the vacuum casting chamber 22. Inserted material of metal or alloy is molten within a crucible 60. Molten material is poured into a receiving port MP in the preheated mold M which is set on the annular rotating chill member 70.


Inventors:
SPICER ROBERT A
PRICE ALLEN R
Application Number:
JP23235098A
Publication Date:
April 27, 1999
Filing Date:
August 04, 1998
Export Citation:
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Assignee:
HOWMET RES CORP
International Classes:
B22D18/06; B22D15/00; B22D23/00; B22D27/04; B22D27/08; B22D33/02; (IPC1-7): B22D23/00; B22D18/06; B22D27/04; B22D33/02
Attorney, Agent or Firm:
Yoshimi Saigo