PROCESS FOR PRODUCING CAST ITEM

Title:

PROCESS FOR PRODUCING CAST ITEM

Document Type and Number:

WIPO Patent Application WO/2005/080023

Kind Code:

A1

Abstract:

A process for producing a cast item with the use of a mold capable of easily crumbling. There is provided a process comprising the step of mixing together a granular aggregate, at least one type of water-soluble binder and water to thereby obtain an aggregate mixture and agitating the aggregate mixture to thereby effect foaming. This aggregate mixture is capable of suppressing undesirable gas generation at the time of mold formation or melt casting. Further, there is provided a process comprising the step of filling a space for mold formation with the foamed aggregate mixture and evaporating water from the charged aggregate mixture to thereby solidify the aggregate mixture, thus accomplishing mold formation; the step of assembling the mold with another mold into a final mold; the step of casting a melt in the final mold; the step of, during the period of cooling of cast item after melt solidification, removing the mold from the cast item; and the step of performing heat treatment of the cast item.

Inventors:

Kato, Yusuke c/o Sintokogio Ltd. (Toyokawa Seisakusho,, Honohara 3-chome Toyokawa-shi Aichi 61, 44200, JP)
Zenpo, Toshihiko c/o Sintokogio Ltd. (Toyokawa Seisakusho,, Honohara 3-chome Toyokawa-shi Aichi 61, 44200, JP)
Asano, Norihiro c/o Sintokogio Ltd. (Toyokawa Seisakusho,, Honohara 3-chome Toyokawa-shi Aichi 61, 44200, JP)
Nagasaka, Masahiko c/o Sintokogio Ltd. (Toyokawa Seisakusho,, Honohara 3-chome Toyokawa-shi Aichi 61, 44200, JP)
Nishikawa, Kazuyuki c/o Sintokogio Ltd. (Toyokawa Seisakusho,, Honohara 3-chome Toyokawa-shi Aichi 61, 44200, JP)

Application Number:

PCT/JP2005/002893

Publication Date:

September 01, 2005

Filing Date:

February 23, 2005

Export Citation:

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Assignee:

SINTOKOGIO, LTD. (28-12, Meieki 3-chome Nakamura-k, Nagoya-shi Aichi 02, 45000, JP)
Kato, Yusuke c/o Sintokogio Ltd. (Toyokawa Seisakusho,, Honohara 3-chome Toyokawa-shi Aichi 61, 44200, JP)
Zenpo, Toshihiko c/o Sintokogio Ltd. (Toyokawa Seisakusho,, Honohara 3-chome Toyokawa-shi Aichi 61, 44200, JP)
Asano, Norihiro c/o Sintokogio Ltd. (Toyokawa Seisakusho,, Honohara 3-chome Toyokawa-shi Aichi 61, 44200, JP)
Nagasaka, Masahiko c/o Sintokogio Ltd. (Toyokawa Seisakusho,, Honohara 3-chome Toyokawa-shi Aichi 61, 44200, JP)
Nishikawa, Kazuyuki c/o Sintokogio Ltd. (Toyokawa Seisakusho,, Honohara 3-chome Toyokawa-shi Aichi 61, 44200, JP)

International Classes:

B22C1/10; B22C1/22; B22C9/02; B22C9/10; B22D29/00; C22F1/04; C22F1/06; C22F1/00; (IPC1-7): B22C9/10; B22C1/10; B22C1/22; B22C9/02; B22D29/00; C22F1/04; C22F1/06

Attorney, Agent or Firm:

Yamasaki, Yukuzo (Yamasaki Law and Patent Office, Sogo Nagatacho Bldg. 8F., 11-28, Nagatacho 1-chom, Chiyoda-ku Tokyo 14, 10000, JP)

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