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Quick early warning method of in-furnace tension fluctuation of cold rolled production line

A technology of production line and tension, applied in the direction of metal rolling, metal rolling, and keeping roll equipment in an effective state, can solve problems such as production instability and broken belts, reduce human factors, reduce broken belts, and speed up early warning Effect

Inactive Publication Date: 2015-04-29
SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to different personal preferences and experiences, this will inevitably lead to unstable production, and a little carelessness will cause broken belts.

Method used

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  • Quick early warning method of in-furnace tension fluctuation of cold rolled production line
  • Quick early warning method of in-furnace tension fluctuation of cold rolled production line
  • Quick early warning method of in-furnace tension fluctuation of cold rolled production line

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Experimental program
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Effect test

Embodiment Construction

[0016] See figure 1 with figure 2 , a method for rapid early warning of tension in a cold rolling production line furnace of the present invention includes

[0017] 1. Tension setting model formation

[0018] The on-site tension setting model of the unit is based on the common sense analysis of tension setting plus the regression of measured data. According to common sense, the main factors affecting the set tension of the strip are: the thickness, width and speed of the strip. Since the speed factor has been compensated in the electrical control, it will not be considered here. The relationship between strip tension and thickness and width can generally be described as: the wider and thicker the strip, the greater the tension. Its mathematical expression is:

[0019] T=α+β×(Th×Wd) (1)

[0020] Among them: T is tension [N], Th is thickness [μm], Wd is width [mm], α, β are coefficients. Analyzing field data. According to the convention of tension setting, it is general...

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Abstract

The invention relates to a cold rolled production line monitoring method, in particular to a quick early warning method of the in-furnace tension fluctuation of a cold rolled production line. The quick early warning method of the in-furnace tension fluctuation of the cold rolled production line comprises the following steps: setting an early warning value in a level-2 machine, wherein a computational formula of band steel early warning tension sigma Omicron1 is as follows (shown in the specification); collecting and transmitting a tension signal to a DCS (distributed control system); comparing the tension signal with the preset early warning value by the level-2 machine; if the tension signal is greater than the early warning value, giving out an early warning signal. A situation that faults are caused since an operator sets a tension value from feelings can be avoided, and more optimal tension control values can be quickly set.

Description

technical field [0001] The invention relates to a monitoring method for a cold rolling production line, in particular to an early warning method for tension in a furnace of a cold rolling production line. Background technique [0002] In many domestic iron and steel enterprises, the tension setting of many cold rolling mills is set by the second-level computer according to the characteristics of the incoming materials, and sent to the first-level computer for implementation after table look-up calculation. [0003] As the speed of the cold rolling line increases, the difficulty of tension setting and control also increases. With the continuous expansion of production specifications, the tension warning speed in the original furnace can no longer adapt to production, mainly because the setting speed of the warning value is too slow. In order to increase the setting speed of the early warning value, it is set completely by the personal experience of the operator, and the earl...

Claims

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Application Information

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IPC IPC(8): B21B28/00B21B38/00
Inventor 史懿
Owner SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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