Metal deforming – By use of roller or roller-like tool-element – Plural roller-couples
Patent
1991-05-10
1992-09-29
Larson, Lowell A.
Metal deforming
By use of roller or roller-like tool-element
Plural roller-couples
72234, 295277, B21B 134
Patent
active
051505975
ABSTRACT:
In this invention, a reversing roughing mill and a reversing finishing mill are disposed at such a distance that a material can reach the finishing mill only in the final pass of roughing, can thus prevent damage to and surface deterioration of finishing rolls in the roughing pass, can reduce the heat loss of the material located between the roughing mill and finishing mill and can produce a strip having excellent surface quality.
In the present invention, a continuous casting plant and a hot rolling plant are connected to each other by a furnace having reheating and soaking functions and a heat retaining box for accumulating slabs is disposed adjacent to this furnace. Therefore, even when rolling is stopped due to any trouble with the rolling plant and extraction of the slab from the furnace to the rolling plant cannot be made, the continuous casting plant can continue to cast the slab without stopping its operation and the cast slabs are accumulated in the heat retaining box and the accumulated slabs can be heated by the furnace and can be extracted to the rolling plant before the next pouring by a ladle.
REFERENCES:
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patent: 4319474 (1982-03-01), Gronbech
patent: 4348882 (1982-09-01), Tippins
patent: 4433566 (1984-02-01), Tippins et al.
patent: 4497191 (1985-02-01), Langer et al.
patent: 4503697 (1985-03-01), Tippins et al.
patent: 4829656 (1989-05-01), Rohde
patent: 5020208 (1991-06-01), Feldmann et al.
Hitachi Review, vol. 37, No. 4, 1988, pp. 181-188, T. Kimura et al., "HC-Mill in Hot Strip Mill Plant-Operational Data and Effect--".
Kimura Tomoaki
Nishimura Sadao
Sekiya Teruo
Hitachi , Ltd.
Larson Lowell A.
Schoeffler Thomas C.
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