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Title:
CONTINUOUS CASTING METHOD
Document Type and Number:
Japanese Patent JP2013208643
Kind Code:
A
Abstract:

To provide a continuous casting method which suppresses an increase in a nitrogen content and reduces surface defects in casting a metal piece.

A continuous casting device 100 for casting a stainless steel piece 3c includes a long nozzle 2 extending into a tundish 101 and arranged on a ladle 1. Stainless molten steel 3 is injected into the tundish 101 through the long nozzle 2, and an injection port 2a of the long nozzle 2 is immersed in the injected stainless molten steel 3. During the injection, argon gas 4a is supplied in a periphery of the stainless molten steel 3 in the tundish 101. Furthermore, as the injection port 2a of the long nozzle 2 is immersed in the stainless molten steel 3 in the tundish 101, continuous casting is carried out by injecting the stainless molten steel 3 into the tundish 101 from the ladle 1 and injecting in a mold 105 from an inside of the tundish 101. During casting, nitrogen gas 4b in place of the argon gas 4a is supplied in the periphery of the stainless molten steel 3 in the tundish 101.


Inventors:
HONDA HIROKI
MORIKAWA HIROSHI
Application Number:
JP2012080411A
Publication Date:
October 10, 2013
Filing Date:
March 30, 2012
Export Citation:
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Assignee:
NISSHIN STEEL CO LTD
International Classes:
B22D11/106; B22D11/00; B22D11/11; B22D11/111
Domestic Patent References:
JPH02187239A1990-07-23
JPH07232242A1995-09-05
JPH07236949A1995-09-12
JPH0775857A1995-03-20
JP2012061516A2012-03-29
JPS57184563A1982-11-13
JPH02187239A1990-07-23
JPH07232242A1995-09-05
JPH07236949A1995-09-12
JPH0775857A1995-03-20
Attorney, Agent or Firm:
Michiharu Soga
Kajinami order
Masahiro Taguchi



 
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