| 摘要 |
PURPOSE:To accomplish free control of the temper and correction of the shape through rolling with tension bending by bridle rolls, with a variable rotation speed and relative position of the tension bridle rolls, in temperaed-rolling of thin band steels. CONSTITUTION:In tempered-rolling of a thin babd steel 3 with a tempered-rolling mill having two four-stage than the upper roll 1 rotating at a circumferential speed V0. The band steel 3 is wound around the upper roll 1 and the lower roll 2 in such a manner as to follow the speed V1 of the lower roll 2 at the outgoing side and the speed V0 of the upper roll 2 at the incoming side. Accordingly, when passing through the pair of the rolls, the band steel 3 is elongated for to V1 on the roll 2 from V0 on the roll 1, thus reducing the thickness thereof to the final h1=h0(V0/V1) from the initial value h0. Herein, the required value of the final thickness h1 can be freely controlled by a roll speed controller and a roll positioning apparatus. |
