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Control means of rolling apparatus and control device thereof

A control method and control device technology, applied in the direction of contour control, etc., can solve problems such as product quality degradation, achieve the effect of reducing impact and preventing edge fracture

Inactive Publication Date: 2008-12-17
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to prevent such edge breakage, it is necessary to reduce the tension applied to the end of the board in shape control (control the end of the board in the direction of elongation), but if the target shape of the end of the board is to be changed, the center of the rolled material The shape of a part will be affected, causing a decrease in the quality of the product as a whole

Method used

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  • Control means of rolling apparatus and control device thereof
  • Control means of rolling apparatus and control device thereof
  • Control means of rolling apparatus and control device thereof

Examples

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Embodiment Construction

[0011]

Hereinafter, embodiments of the present invention will be described using drawings. First, use figure 1 A general example of a control system applied to the present invention will be described.

[0012]

Control object 11 includes control object A (for example, the shape of the center part described later), and control object B1 (corresponding to the shape of the WS edge part described later)...Control object Bn (corresponding to the shape of the DS edge part described later) . These can also be distribution values ​​such as the distribution in the sheet width direction in the rolled material, for example. For each value, a measurement value 12 of the control object A, a measurement value 13 of the control object B1 , and a measurement value 14 of the control object Bn are measured by a measuring device (not shown). The target setting means 15 sets the target value 17 of the controlled object A. Control system-1 (16) ... control system-n (17), in order to make th...

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PUM

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Abstract

Control is kept at a certain extent while the objective different from the original objective is achieved. For a controlled object, if a plurality of control systems are adopted, the control target value of each control system is varied so as to obtain a control target. The control target value of the plurality of control systems is varied within the allowable value of the control accuracy, and the objective different from the original objective is achieved by generation of interference between the control systems. For shape control of a rolling apparatus, it is possible to control the end section of a plate by varying the target shape of bender control and coolant control.

Description

technical field [0001] The invention relates to a control method of a rolling device and a control device thereof. Background technique [0002] In cold rolling mills for producing metal sheets, shape control for controlling the shape of a material to be rolled (waviness of the sheet) has been performed conventionally. Shape control makes the actual signal from the shape detector installed on the output side of the rolling mill consistent with the target shape, using the bender (bender) installed on the rolling mill (applying pressure at both ends of the work roll to generate a deflection control shape), Coolant nozzles (or also referred to as positional cooling, hereinafter the same) are performed (using the thermal expansion caused by the rolling of the work roll to control the shape). Such a technique is disclosed in Japanese Unexamined Patent Publication No. 2004-66310, for example. [0004] On the one hand, the shape of the rolled material in the rolling mill is...

Claims

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Application Information

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IPC IPC(8): B21B37/28
Inventor 服部哲
Owner HITACHI LTD
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