Thin cast steel strip with reduced microcracking

Details Thin cast steel strip with reduced microcracking Thin cast steel strip with reduced microcracking

2011-07-12

2011-07-12

Kerns, Kevin P (Department: 1735)

Metal founding

Process

Shaping liquid metal against a forming surface

C164S428000

Reexamination Certificate

active

07975754

ABSTRACT:
A thin cast steel strip and method of making thereof with improved resistance to microcracking, where the steel strip is produced by continuous casting and contains a carbon content between about 0.010% and about 0.065% by weight, less than 5.0% by weight chromium, at least 70 ppm of total oxygen and between 20 and 70 ppm of free oxygen, and manganese to sulfur ratio greater than about 250. The carbon content in the cast strip may be below about 0.035%, less than 0.005% by weight titanium, and the average manganese to silicon ratio in the strip produced may be greater than 3.5. The carbon content may be less than 0.035%, the casting speed less than 76.68 meters per minute, and the tundish temperature of the molten metal is maintained below 1612° C. (2933.7° F.).

REFERENCES:
patent: 5063990 (1991-11-01), Follstaedt et al.
patent: 5297614 (1994-03-01), Bessho et al.
patent: 5390726 (1995-02-01), Fukuda et al.
patent: 5807444 (1998-09-01), Paradis et al.
patent: 5901777 (1999-05-01), Matsumura et al.
patent: 5934359 (1999-08-01), Strezov
patent: 6059014 (2000-05-01), Strezov
patent: 6386271 (2002-05-01), Kawamoto et al.
patent: 6491089 (2002-12-01), Poirier et al.
patent: 6588494 (2003-07-01), Mazurier et al.
patent: 6622779 (2003-09-01), Mazurier
patent: 6679313 (2004-01-01), Poirier et al.
patent: 6739383 (2004-05-01), Marchionni et al.
patent: 7117925 (2006-10-01), Strezov et al.
patent: 7156151 (2007-01-01), Mahapatra et al.
patent: 7296614 (2007-11-01), Schlichting et al.
patent: 2005/0082031 (2005-04-01), Mahapatra et al.
patent: 2006/0191612 (2006-08-01), Yoshida et al.
patent: 2007/0144632 (2007-06-01), Toyoda et al.
patent: 2007/0175608 (2007-08-01), Mahapatra et al.
patent: 03-248750 (1991-11-01), None
patent: 03-294419 (1991-12-01), None
patent: 04-045223 (1992-02-01), None
patent: 07-314097 (1995-12-01), None
patent: 08-192250 (1996-07-01), None
patent: 270147 (1994-12-01), None
patent: 02/028569 (2002-04-01), None
patent: 03/024644 (2003-03-01), None
PCT/AU2008/001164 Further Written Opinion.
PCT/AU2008/001164 International Search Report.
PCT/AU2008/001164 Written Opinion.
AU2008900484 Search Report.

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