Twin roll continuous casting of metal strip

Details Twin roll continuous casting of metal strip Twin roll continuous casting of metal strip

1992-06-10

1993-06-08

Batten, Jr., J. Reed

Metal founding

Process

Shaping liquid metal against a forming surface

164428, B22D 1106

Patent

active

052170616

ABSTRACT:
A metal strip is continuously cast through a gap of a pair of internally cooled rolls rotating in the opposite direction to each other having a pair of side dams disposed on both sides of the rolls and a pair of longitudinal dams disposed with their bottom surfaces held slightly above the roll surfaces so that openings are formed between the bottom surfaces of the longitudinal dams and the roll surfaces and that during steady state operation of the apparatus the openings are positioned at a level of the surface of molten metal in the pool. The longitudinal dams are capable of preventing formation of triple point solidified shells and make it possible that the surface of molten metal may come in contact with the surfaces of the rolls while forming the transversely uniform contacting edges, and therefore, the apparatus produces metal strips having enhanced surface quality which are substantially free from molten metal wrinkles. The advantages are further promoted by using a pouring device having a slit-shaped nozzle.

REFERENCES:
patent: 2128941 (1938-09-01), Hudson
patent: 4784208 (1988-11-01), Fukase et al.

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