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Title:
PRODUCTION OF CARBON STEEL STRIP BY TWIN-ROLL CONTINUOUS CASTING METHOD
Document Type and Number:
Japanese Patent JP2000301295
Kind Code:
A
Abstract:

To provide the method for directly producing a carbon steel strip having ≤10 mm thickness from molten steel by casting the molten steel between side surfaces of two horizontal-rotating rolls each inside of which is cooled and which are made of copper or copper alloy.

The chemical composition (wt.%) of the molten steel 4 is defined so that carbon is ≤0.5%, manganese is 0.2-2%, silicon is ≤2% silicon, the ratio of %Mn/%Si is 3-16, (aluminum + titanium + zirconium) as the arbitrary components is ≤0.10% and the balance iron with inevitable impurities. Further, the side surfaces 3, 3' of the rolls have 40-200 μm roughness Rz and 10-40 μm roughness Ra and as mutually adjacent dimples. The atmosphere surrounding meniscuses 8, 8' in the molten steel 4 existing between the rolls 1, 1' contains 40-100% nitrogen and the balance inert gas or mixed gas of inert gas indissolved into the molten steel 4.


Inventors:
POIRIER FRANCOIS
COMMARIEU FRANCOISE
MARCHIONNI CHRISTIAN
VICENTE PATRICE
FARAL MICHEL
SELARIES JACQUES
Application Number:
JP2000086339A
Publication Date:
October 31, 2000
Filing Date:
March 27, 2000
Export Citation:
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Assignee:
LORRAINE LAMINAGE
International Classes:
B22D11/00; B22D11/06; B22D11/12; B22D11/128; C22C38/00; C22C38/50; (IPC1-7): B22D11/06; B22D11/00; B22D11/12; B22D11/128; C22C38/00; C22C38/50
Domestic Patent References:
JPH09141399A1997-06-03
JPH10211548A1998-08-11
JPH0366458A1991-03-22
JPH02179343A1990-07-12
JPH1147893A1999-02-23
JPH08164449A1996-06-25
Foreign References:
WO1995026242A11995-10-05
Attorney, Agent or Firm:
Takashi Koshiba



 
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