Casting steel strip

Details Casting steel strip Casting steel strip

2006-05-23

2006-05-23

Tran, Len (Department: 1725)

Metal founding

Process

Shaping liquid metal against a forming surface

C164S480000

Reexamination Certificate

active

07048033

ABSTRACT:
A method of producing strip comprising the steps of assembling a pair of casting rolls with a nip between them, introducing between the casting rolls to form a casting pool of molten carbon steel having a total oxygen content of at least 70 ppm usually less than 250 ppm, and a free oxygen content 20 and 60 ppm, counter rotating the casting rolls, solidifying the molten steel on the rolls to form metal shells with levels of oxide inclusions reflected by the total oxygen content of the molten steel, and forming thin steel strip through the nip between the casting rolls from the solidified shells. The molten steel may have a total oxygen content is at least 100 ppm and the free oxygen content may be between 30 and 50 ppm. A unique steel strip may be obtained using the method having ductile properties.

REFERENCES:
patent: 4073643 (1978-02-01), Kumai et al.
patent: 5934359 (1999-08-01), Strezov
patent: 6059014 (2000-05-01), Strezov
patent: 57134-249 (1982-08-01), None
patent: 62050-054 (1987-03-01), None
patent: 02205-618 (1990-08-01), None
patent: 03291-139 (1991-12-01), None
patent: WO 02/26422 (2002-04-01), None

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