Title:
METHOD AND DEVICE FOR POURING MOLTEN METAL IN VACUUM MOLDING AND CASTING
Document Type and Number:
WIPO Patent Application WO/2005/095022
Kind Code:
A1
Abstract:
A method and a device for pouring a molten metal in a vacuum molding for casting a thin-walled casting by using a V-process casting mold (molding frame body) and a casting cast by the method. The method comprises a shielding member fitting step for fitting a shielding member onto the surface of a prototype plate, a step for placing the molding frame body on the fitted shielding member and filling a filler not containing a bond in the molding frame body, a step for sucking the shielding member to the filler side by bringing the inside of the molding frame body into a negative pressure by closing the upper surface of the filler to form the shielding member, a step for molding a semi-split casing mold with a molding surface by releasing the prototype plate from the shielding member, a step for defining a casting cavity and forming a completed casting mold by matching the semi-split casting mold with another semi-split casting mold molded in the same manner as in the case of the semi-split casting mold, a step for pouring the molten metal in the casting cavity, and a step for taking out the casting by releasing the state of negative pressure in the molding frame body. The method also comprises a step for depressurizing the inside of the casting cavity through the molding frame body before starting to pour the molten metal in the completed casting mold.
Inventors:
MAKINO HIROYASU (JP)
TOMITA TAKETOSHI (JP)
OBA TAKAFUMI (JP)
SUZUKI HIROAKI (JP)
MIZUNO KENJI (JP)
ANDO TOSHIAKI (JP)
ENOMOTO YOSHINOBU (JP)
INOUE TAKAO (JP)
TAKEDA SHIZUO (JP)
TOMITA TAKETOSHI (JP)
OBA TAKAFUMI (JP)
SUZUKI HIROAKI (JP)
MIZUNO KENJI (JP)
ANDO TOSHIAKI (JP)
ENOMOTO YOSHINOBU (JP)
INOUE TAKAO (JP)
TAKEDA SHIZUO (JP)
Application Number:
PCT/JP2005/006481
Publication Date:
October 13, 2005
Filing Date:
April 01, 2005
Export Citation:
Assignee:
SINTOKOGIO LTD (JP)
MAKINO HIROYASU (JP)
TOMITA TAKETOSHI (JP)
OBA TAKAFUMI (JP)
SUZUKI HIROAKI (JP)
MIZUNO KENJI (JP)
ANDO TOSHIAKI (JP)
ENOMOTO YOSHINOBU (JP)
INOUE TAKAO (JP)
TAKEDA SHIZUO (JP)
MAKINO HIROYASU (JP)
TOMITA TAKETOSHI (JP)
OBA TAKAFUMI (JP)
SUZUKI HIROAKI (JP)
MIZUNO KENJI (JP)
ANDO TOSHIAKI (JP)
ENOMOTO YOSHINOBU (JP)
INOUE TAKAO (JP)
TAKEDA SHIZUO (JP)
International Classes:
B22C9/00; B22C9/03; B22C21/01; B22D18/04; B22D18/06; B22D23/06; (IPC1-7): B22C9/03; B22C9/00; B22D18/06
Foreign References:
| JPH08141731A | 1996-06-04 | |||
| JP2002035918A | 2002-02-05 | |||
| JPS56169964U | 1981-12-15 | |||
| JPH07290225A | 1995-11-07 | |||
| JPH01180769A | 1989-07-18 |
Other References:
See also references of EP 1731242A4
None
None
Attorney, Agent or Firm:
Yamasaki, Yukuzo (Sogo Nagatacho Bldg. 8F 11-28, Nagatacho 1-chom, Chiyoda-ku Tokyo 14, JP)
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