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Title:
METHOD FOR MANUFACTURING INGOT
Document Type and Number:
Japanese Patent JP2010269333
Kind Code:
A
Abstract:

To provide a method for manufacturing an ingot capable of suppressing generation of cast defects and of manufacturing a large sound ingot.

In the method for manufacturing the ingot 6 by pulling out a crucible bottom 1 downward while supplying a melting raw material 3 with a CCIM method, a lower end position of a slit 8 formed between copper segments 7 configuring a water-cooled copper crucible 2 is arranged below a lower end position of a high-frequency coil 4 and a position where a solidification interface between a melt pool 5 and the ingot 6 contacts with the inner face of the water-cooled copper crucible 2 is made to be arranged between the lower end position of the high-frequency coil 4 and the position half of the height of the high-frequency coil 4, and the ingot 6 is manufactured.


Inventors:
FURUTA SEISHI
SODO TATSUHIKO
FUKUMOTO HIROHIKO
NOHARA MASAMI
YOSHIMURA YUKIHIKO
IMAI RYOTA
Application Number:
JP2009000122341
Publication Date:
December 02, 2010
Filing Date:
May 20, 2009
Export Citation:
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Assignee:
KOBE STEEL LTD
International Classes:
B22D11/041; B22D11/00; B22D21/06; B22D23/00; F27B14/06; F27B14/18; F27D11/06
Domestic Patent References:
JPH11745A1999-01-06
JP2008049358A2008-03-06
JP2009113063A2009-05-28
JP2006281291A2006-10-19
JPH06229680A1994-08-19
JPH11745A1999-01-06
JP2008049358A2008-03-06
JP2009113063A2009-05-28
Attorney, Agent or Firm:
梶 良之
須原 誠
竹中 芳通