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Sendzimir 20 rolling mill edge plate shape controlling method and device

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: 2017-05-03
BAOSHAN IRON & STEEL CO LTD
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  • Abstract
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  • Claims
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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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  • Sendzimir 20 rolling mill edge plate shape controlling method and device
  • Sendzimir 20 rolling mill edge plate shape controlling method and device
  • Sendzimir 20 rolling mill edge plate shape controlling method and device

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Effect test

Embodiment

[0060] The edge shape control technology was applied to a Sendzimir 20-high mill. 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 flatness control is put into operation, first test the edge flatness control ability of the symmetric-middle roll movement, and obtain the control coefficient of the symmetric-middle roll movement:

[0062] k T = 5.0

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

[0064] Based on the above, the edge flatness control program performs the following calculations according to the control cycle (T=0.2s).

[0065] Receive the actual flatness signal from the flatness measurement computer, and perform the moving average processi...

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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 method for cold rolling of a plate and strip, and more specifically, to a method and a device for controlling the edge shape of a Sendzimir 20-roll mill. Background technique [0002] Plate shape is an important quality indicator of cold-rolled strip steel. The shape of cold-rolled strip steel directly affects the productivity, yield and cost of downstream industries such as automobiles, home appliances, meters, food packaging, and the appearance of products. Due to the high yield strength of the hard strip steel, the plate shape is difficult to control. The Sendzimir rolling mill is an important equipment in cold rolling production. Because of its large arch rigidity and small work roll diameter, it is most suitable for cold rolling of hard steel strip. The Sendzimir 20-high rolling mill mainly uses ASU crown adjustment, an intermediate roll shift and tilt to adjust the shape of the plate. For the middle wave, double-side wave, ...

Claims

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Application Information

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Patent Type & Authority Applications(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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