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US 8,943,868 B2Granted
Method of cold-rolling steel sheet and cold-rolling facility
AssigneeNippon Steel & Sumitomo Metal Corporation
InventorsHiroyuki Mimura, Takao Mukai, Kazuhiro Miyamoto
Life of this patent
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Abstract
In cold-rolling a steel sheet coil, when a tail end portion of a steel sheet coil (7) is wound around a tension reel (3) prior to second-pass rolling after the completion of first-pass rolling, the tail end portion is heated to a temperature within a range of not lower than 50° C. nor higher 350° C. with a heater disposed between a rolling stand (1) and the coil tail end-side tension reel (3).
Claims6
A cold-rolling facility for cold-rolling a steel sheet coil comprising:
- a pay-off reel from which the steel sheet coil is uncoiled;
- a single-stand reverse rolling mill;
- a first tension reel on the opposite side of the reverse rolling mill from the pay-off reel;
- a second tension reel on the same side of the reverse rolling mill as the pay-off reel;
- a deflector roll disposed between the reverse rolling mill and the second tension reel, and
- a heater disposed between the deflector roll and the second tension reel, and heating a tail end portion of the steel sheet coil.
3 more elements
Dependencies are inferred from the claim text.