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Edge Shape Control Method of Sendzimir 20-high Rolling Mill

A technology of shape control and rolling mill, applied in the direction of contour control, etc., can solve the problems of large difference in the movement of the middle roll, strip deviation, broken strip, etc., to ensure the stability and edge shape control effect Effect

Active Publication Date: 2018-10-02
BAOSHAN IRON & STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] In view of the large difference in the movement of the intermediate rolls in the prior art, which will cause the problem of strip deviation or even strip breakage to a certain extent, the purpose of the present invention is to provide a method for controlling the shape of the edge of the Sendzimir 20-roll mill

Method used

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  • Edge Shape Control Method of Sendzimir 20-high Rolling Mill
  • Edge Shape Control Method of Sendzimir 20-high Rolling Mill
  • Edge Shape Control Method of Sendzimir 20-high Rolling Mill

Examples

Experimental program
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Effect test

Embodiment

[0060] The edge shape control technology was applied to a 20-roll mill in Sendzimir. Such as image 3 As shown, the horizontal distance between the Sendzimir rolling mill and the shape measuring roll is 2.3m, the diameter of the shape measuring roll is 0.4m, and the maximum speed of the strip is 800m / min.

[0061] Before the edge shape control is put into operation, the edge shape control ability of the symmetrical-middle roll movement is tested first, and the regulation coefficient of the symmetrical-middle roll movement is obtained:

[0062] k T =5.0

[0063] The weighting coefficient of the target shape, edge shape deviation and the adjustment coefficient k of the symmetrical-middle roll movement T Stored in the board shape control CPU.

[0064] On the basis of the above, the edge plate shape control program performs the following calculations according to the control period (T=0.2s).

[0065] The actual flatness signal is received from the flatness measurement compute...

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Abstract

The invention discloses a sendzimir 20 rolling mill edge plate shape controlling method and device. The method comprises the following steps that (1) strip steel plate shape actual values in all control periods are obtained; (2) operation side edge plate shape deviations and driving side edge plate shape deviations are obtained by subtracting target plate shape values from the plate shape actual values; (3) symmetrical side plate shape deviations are calculated according to strip steel two-side edge plate shape deviations; (4) side plate shape control gain coefficients are calculated; (5) symmetrical side plate shape deviations multiply by the side plate shape control gain coefficients to obtain a middle roller symmetrical moving adjustment amount; and (6) the adjustment amount is output to a mill. By means of the sendzimir 20 rolling mill edge plate shape controlling method and device, the stability in the rolling process is guaranteed, the side plate shape control effect is guaranteed, and the problem of moving of non-symmetrical middle rollers is solved.

Description

technical field [0001] The invention relates to a strip cold rolling method, and more specifically relates to a method for controlling the edge shape of a Sendzimir 20-roll mill. Background technique [0002] The shape of the cold-rolled strip is an important quality index of the cold-rolled strip. The shape of the cold-rolled strip directly affects the productivity, yield and cost of downstream industries such as automobiles, home appliances, instruments, and food packaging, as well as the appearance of the product. Due to the high yield strength of hard strip steel, its shape is difficult to control. Sendzimir rolling mill is an important equipment in cold rolling production. It is most suitable for cold rolling hard strip steel due to its high arch rigidity and small diameter of work rolls. The Sendzimir 20-high rolling mill mainly adjusts the plate shape through ASU crown adjustment, roll shifting and inclination of an intermediate roll. Waves have a certain ability to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/40
CPCB21B37/40
Inventor 徐江华宿德军李山青陈军林润杰王红兵
Owner BAOSHAN IRON & STEEL CO LTD
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