Title:
INGOT-MAKING METHOD FOR METAL
Document Type and Number:
Japanese Patent JP3925233
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an ingot-making method with which a metallic cast ingot having very little entrainment of non-metallic inclusion, and occurrence of macro-segregation and porous shrinkage cavity, can be obtained.
SOLUTION: The cast ingot is closed under the state of existence of non- solidified molten metal 3 in the inner part of the cast ingot 4 by arranging a metal-made riser flask 2 at the upper part of a mold 1, pouring the molten metal till the upper part of the riser flask and solidifying the molten metal near the upper end part 2a of the riser flask. Thereafter, the cast ingot is taken out from the mold and at the timing when the non-solidified molten metal is present in a corresponding position 4b in the mold and a corresponding position 4a in the riser flask, the side surfaces 4d of the cast ingot are screwed down toward the surfaces from the lower end part 4c to the upper end part 4e of the cast ingot, sequentially. It is desirable to screw down these surfaces under the state the cast ingot is laid down.
Inventors:
Akihiro Yamanaka
Katsuyuki Yamamoto
Nishino Kazuhisa
Katsuyuki Yamamoto
Nishino Kazuhisa
Application Number:
JP2002039566A
Publication Date:
June 06, 2007
Filing Date:
February 18, 2002
Export Citation:
Assignee:
SUMITOMO METAL INDUSTRIES,LTD.
International Classes:
B22D7/00; B22D9/00; B22D29/00; (IPC1-7): B22D7/00; B22D9/00; B22D29/00
Domestic Patent References:
| JP2001286988A | ||||
| JP2000126846A | ||||
| JP62144854A | ||||
| JP51066233A |
Attorney, Agent or Firm:
Michio Mori
Terutada Hogami
Terutada Hogami
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