Feedforward control method for edge drop of head part and tail part of strip steel

A feedforward control and edge drop technology, which is used in rolling mill control devices, metal rolling, manufacturing tools, etc., can solve problems such as poor control effect of the head and tail sections of the strip, fluctuations in the edge drop of hot rolling incoming materials, and incompatibility. , to achieve the effect of accurate movement value, guaranteed realization, and accurate control of target positioning
CN104249083AActive Publication Date: 2014-12-31BAOSHAN IRON & STEEL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BAOSHAN IRON & STEEL CO LTD
Publication Date
2014-12-31

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Abstract

The invention discloses a feedforward control method for edge drop of a head part and a tail part of strip steel. The feedforward control method comprises the following steps: dividing the head part and the tail part of the strip steel into a plurality of segments along the direction of travel of the strip steel; for each of the segments, performing the following steps: getting n points from the edge part to the center of the strip steel and in the width direction of the strip steel; collecting edge drop values, at the n points, of the incoming strip steel; determining a play value, which corresponds to each point, of a working roll through the following model formula: DeltaWRSi=-ki{[(EC-Ei)-alpha]*beta+m}; calculating the sum DeltaWRS of play values which correspond to the n points; executing the DeltaWRS so as to perform edge drop control. According to the feedforward control method for the edge drop of the head part and the tail part of the strip steel, accurate control can be performed on the edge drop of the head part and the tail part of the strip steel.
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Description

technical field

[0001] The invention relates to a control method in the rolling process of strip steel, in particular to a control method for edge drop of strip steel. Background technique

[0002] The edge drop of cold-rolled strip (Edge Drop, referred to as edge drop, also known as edge thinning) is an important parameter of dimensional accuracy index. The traditional definition of edge drop is the difference between the thickness tA at the position 100mm from the edge of the strip minus the thickness tB at the position 15mm from the edge of the strip.

[0003] However, with the continuous improvement of users' requirements for product quality, the traditional edge drop definition has been difficult to meet the requirements. It often happens that when the control level of the traditional edge drop fully meets the control requirements of the unit, it still cannot meet the user's requirements for the shape of the strip section. . Therefore, at present, when producing cold-...

Claims

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