Continuous rolling method of billet and apparatus therefor
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United States of America Patent
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-
Sep 28, 1999
Grant Date -
N/A
app pub date -
Apr 30, 1997
filing date -
May 7, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A continuous rolling method includes the steps of: flash-butt welding a rear end of a preceding billet with a front end of a succeeding billet; grinding the welded portion to remove a burr on the welded portion; heating the continuous billet; and rolling the continuous billet through a series of rolling mills. The flash-butt welding step includes joining the rear end of the preceding billet with the front end of the succeeding billet by using the stationary welder and joining the billets having at least double the length of the preceding billet by using the travelling welder. A continuous rolling apparatus includes a stationary flash-butt welder, a travelling flash-butt welder, a travelling grinding machine, an induction heater and a series of continuous rolling mills.
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