Method and apparatus for continuous rolling by reheating locally cold portions produced by clamping during flash-butt welding
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United States of America Patent
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Sep 12, 2000
Grant Date -
N/A
app pub date -
Jun 16, 1997
filing date -
Jun 28, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of continuous rolling comprises the steps of: forming a continuous billet 20 by joining a rear end of preceding billet 21 with a front end of succeeding billet 21 by flash-butt welding 3; removing burr on welded portions of the continuous billets 20; then rolling the continuous billet 20 in a rolling mill line 6; wherein locally cold portions produced by clamping at welding are reheated after removing the burr using a travelling induction-heating unit 5 running at a speed synchronously with a running speed of the continuous billet 20, which travelling induction-heating unit 5 is provided with induction-heating coils arranged at the same distance with that of the locally cold portions.
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