Regulation method for a cold-rolling train with complete mass flow regulation

Abstract

A cold-rolling train comprises a plurality of rolling stands (2) through which a cold strip (1) passes in succession and a strip feeding device (3) located prior to the first passed-through rolling stand (2-1). A nulled setpoint speed (v-0*) is sent to the strip feeding device (3) so that the strip feeding device (3) feeds the cold strip (1) to the first passed-through rolling stand (2-1) at a nulled actual speed (v-0) corresponding to the nulled setpoint speed (v-0*). A first setpoint speed (v-1*) is sent to the first passed-through rolling stand (2-1) so that rolls (7-1) of the first passed-through rolling stand (2-1) rotate at a first actual speed (v-1) corresponding to the first setpoint speed (v-1*). Between the first passed-through rolling stand (2-1) and the rolling stand (2-2) passed through next is a first thickness detection device (4-1), by means of which a first actual thickness (d-1) of the cold strip (1) is detected. A base output signal (delta) is determined using the first actual thickness (d-1) and a first setpoint thickness (d-1*), said base output signal being used to adjust the first setpoint speed (v-1*), but not the nulled setpoint speed (v-0*), so that the first actual thickness (d-1) is conformed to the first setpoint thickness (d-1*). Between the strip feeding device (3) and the first passed-through rolling stand (2-1) is a nulled thickness detection device (4-0), by means of which a nulled actual thickness (d-0) of the cold strip (1) is detected. The nulled setpoint speed (v-0*) is adjusted by way of a nulled feed-forward controller (9-0) in such a way that the product is adjusted to a setpoint mass flow by the nulled setpoint speed (v-0*) and the nulled actual thickness (d-0).

Description

technical field

[0001] The invention relates to an adjustment method for a cold-rolling train having a plurality of stands through which cold-rolled strip passes one after the other and a strip conveying device arranged in front of the first passing stand,

[0002] - wherein the zeroth rated speed is input to said strip conveying device, so that said strip conveying device conveys the cold rolled strip at a zeroth actual speed corresponding to said zeroth rated speed to the first passing frame,

[0003] - wherein a first nominal speed is input to said first passing stand such that the rolls of said first passing stand rotate at a first actual speed corresponding to said first nominal speed,

[0004] - wherein the first actual thickness of the cold-rolled strip is detected by means of a first thickness detection device arranged between said first passing stand and the next passing stand,

[0005] - wherein the basic output signal is ascertained from the first actual thickness...

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