Electric heating – Inductive heating – With heat exchange
Patent
1994-07-01
1997-06-10
Hoang, Tu
Electric heating
Inductive heating
With heat exchange
219614, 219645, 219655, 72128, 72148, H05B 614, B21C 4706
Patent
active
056372493
ABSTRACT:
For economy of operation, as much as possible of the total length of a steel strip being rolled by a Steckel mill should be maintained at an acceptably high temperature. To this end, the trailing edge of the strip is drawn into the coiler furnace to the extent possible without losing driving control of the strip. This is enabled by providing within or in close proximity with the entrance/exit port of the coiler furnace a pair of preferably heated pinch rolls that drive the trailing edge of the strip (that has just completed a pass through the Steckel mill) into the coiler furnace as far as possible, leaving only a very short protruding portion of that trailing edge outside the coiler furnace. The strip may be left idle within the coiler furnace for as long a time as is required to bring the temperature of the wound strip up to a target operating temperature. Then the same pair of pinch rolls in or near the entrance/exit port of the coiler furnace drive the strip out of the furnace toward the Steckel mill.
REFERENCES:
patent: 4430874 (1984-02-01), Tippins et al.
patent: 4455848 (1984-06-01), Tippins et al.
patent: 4522050 (1985-06-01), Thomas
patent: 4703640 (1987-11-01), Buchegger et al.
Barrigar Robert H.
Hoang Tu
IPSCO Enterprises Inc.
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