Metal founding – Process – Shaping liquid metal against a forming surface
Reexamination Certificate
2007-11-27
2007-11-27
Tran, Len (Department: 1725)
Metal founding
Process
Shaping liquid metal against a forming surface
C164S459000, C164S418000
Reexamination Certificate
active
11000593
ABSTRACT:
A thin steel strip with low surface roughness and low porosity produced by casting with molten steel having a total oxygen content of at least about 100 ppm and a temperature that allows a majority of any oxide inclusions to be in a liquidus state. The steel strip produced by the method may have a per unit area density of at least about 120 oxide inclusions per square millimeter to a depth of about 2 microns from the strip surface.
REFERENCES:
patent: 4073643 (1978-02-01), Kumai et al.
patent: 4152140 (1979-05-01), Hori et al.
patent: 4235632 (1980-11-01), Uher et al.
patent: 4250950 (1981-02-01), Buxmann et al.
patent: 4368084 (1983-01-01), Irie et al.
patent: 4746361 (1988-05-01), Pielet et al.
patent: 5227251 (1993-07-01), Suichi et al.
patent: 5520243 (1996-05-01), Freeman et al.
patent: 5535812 (1996-07-01), Singleton
patent: 5588479 (1996-12-01), Leadbeatter et al.
patent: 5701948 (1997-12-01), Strezov et al.
patent: 5720336 (1998-02-01), Strezov
patent: 5934359 (1999-08-01), Strezov
patent: 6059014 (2000-05-01), Strezov
patent: 6073679 (2000-06-01), Strezov
patent: 6120621 (2000-09-01), Jin et al.
patent: 6491089 (2002-12-01), Poirier et al.
patent: 6558486 (2003-05-01), Strezov et al.
patent: 2003/0000679 (2003-01-01), Strezov et al.
patent: 2003/0111206 (2003-06-01), Blejde et al.
patent: 800881 (1997-10-01), None
patent: 1364717 (1964-05-01), None
patent: 60-40650 (1985-03-01), None
patent: 6-594 (1994-01-01), None
patent: 2000-178634 (2000-06-01), None
patent: 2003-326342 (2003-11-01), None
patent: 51-67227 (1976-06-01), None
patent: WO 95/13889 (1995-05-01), None
patent: WO 98/55251 (1998-12-01), None
patent: WO 00/07753 (2000-02-01), None
patent: WO 03/024644 (2003-03-01), None
Patent Abstract of Japan vol. 015, No. 333 Aug. 23, 1991 and JP 03 128149a (Ishikawajima Harima Heavy Ind Co Ltd), May 31, 1991; “Twin Roll Type Continuous Casting Machine”, Heiji Kato.
Patent Abstract of Japan vol. 018, No. 435, Aug. 15, 1994 & JP 06 134553 a (Nippon Steel Corp) May 17, 1994, “Mold For continuously Casting Thin Cast Slab and Method for Working Surface Thereof”.
Patent Abstract of Japan, vol. 1997, No. 03, Mar. 31, 1997 & JP 08 294751 A (Nippon Steel Corp), Nov. 12, 1996, “Casting Drum of Twin Drum Type Continuous Casting Machine,” Ogibayashi Shigeaki.
Patent Abstract of Japan vol. 016, No. 217, May 21, 1992 & JP 04 041052 A (Nippon Steel Corp), Feb. 12, 1992, “Method for Continuously Casting Cast Strip,” Kajioka Hiroyuki.
“Recent Developments in Project M the Joint Development of Low Carbon Steel Strip Casting by BHP and IHI”; W. Blejde, R. Mahapatra and H. Fukase; METEC Congress 99, Dusseldorf, Germany; Jun. 13-15, 1999.
International Search Report for PCT/AU2004/000085 mailed Mar. 9, 2004.
“Scanning Electron Microscopy and X-Ray Microanalysis”. A Text for Biologists, Materials Scientists, and Geologists. Second Edition. 1992. Chapter 8.
Blejde Walter
Mahapatra Rama
Strezov Lazar
Hahn Loeser & Parks LLP
Nucor Corporation
Stein Arland T.
Tran Len
LandOfFree
Casting steel strip with low surface roughness and low porosity does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Casting steel strip with low surface roughness and low porosity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Casting steel strip with low surface roughness and low porosity will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3869780