JPS5764403A - Cold rolling method in continuous process line - Google Patents

Abstract

PURPOSE: To perform a cold rolling process while adapting its efficiency even in case of being connected to a continuous annealing process, etc., by accumulating a continuously received strip in an accumulator installed on the feed-in side of a reversing mill, by feeding a prescribed length of this accumulated strip to the said mill for performing odd number of reversing passes.

CONSTITUTION: A mother material (strip) is fed to a feed-in side accumulator 2 at a speed Vs and an amount Vs×T of the mother material is accumulated at an initial stage. The mother material is sent out of this accumulated mother material at a speed VM1/α1 to a rolling mill 1. The rolling mill 1 is stopped at a point by which a length l₁=L.α₁/α is rolled as the 1st pass; then, the rolling mill 1 is at once driven in the reversed direction for rolling a length l₂=L.α1α2/α as the 2nd pass; again the rolling mill 1 is driven in the normal direction for rolling a length L3=L as the 3rd pass. The tracking for this eutectic point is carried out by a process computer 9 by processing signals sent from distance meters 6, 6 and thickness gauges 5, 5 installed before and after the rolling mill. After the rolling mill 1 performs one cycle of the rolling process for obtaining a prescribed length L and aimed thickness of the cold rolled strip, the rolling 1 uniterruptedly enters the next cycle for performing the scheduled rolling process, and thereinafter, these procedures are repeated.

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