| 摘要 |
PURPOSE:To prevent contact at the outside of a sheet width of a rolled stock and to roll the stock into an extremely thin foil by forming one of upper and lower work rolls for a 2nd rolling into a tapered roll and bringing a taper leading edge part to be inside from a sheet width of the rolled stock after a 1st rolling to roll the stock under an increased rolling load. CONSTITUTION:A 2nd rolling of a steel sheet 1 under a high rolling load P is performed after the hot rolled sheet 1 is firstly rolled and annealed. In that time, the sheet 1 is rolled by a flat part of an upper work roll 2 consisting of a tapered roll and a lower work roll 3. Concurrently, the work rolls 2, 3 deflect at the outside of a sheet width of the sheet 1 by the high load P and a strong drafting force is applied to a taper leading edge part 5 of the upper work roll 2 so that both end parts of the sheet 1 are cut. The only central part of the sheet 1 rolled by the flat part of the roll 2 is formed into a steel foil 6. Both cut edge parts 6a, 6b of the sheet 1 are wound on reels 7a, 7b.
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