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Target shape setting method

A setting method and target plate technology, applied in the direction of contour control, etc., can solve problems such as poor plate shape, no treatment, broken strips, etc., and achieve the effects of reducing broken strips, ensuring rolling stability, and improving physical quality

Active Publication Date: 2016-03-30
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Feedforward compensation technology has a good control effect on the flatness deviation caused by the change of rolling force, but its core is still to control according to the set target flatness
[0018] In addition, currently thin-gauge strip steel is prone to poor shape or even strip breakage during the rolling force fluctuation stage during the rolling process, and there is no effective measure to deal with such problems at present

Method used

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Embodiment Construction

[0047] The flow steps of the target shape setting method of the present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0048] Generally speaking, in the method for setting the target shape of the present invention, in the rolling force fluctuation stage when the strip is rolled, considering the influence of process parameters such as rolling force, coverage ratio, and exit thickness on the target shape, determine Rolling force compensation value, coverage ratio compensation coefficient and exit thickness compensation coefficient, and through these compensation values, determine the edge compensation value of the target plate shape in the rolling force fluctuation stage. The 6th order coefficient is corrected to obtain the dynamic target shape curve. Finally, the system adjusts the shape of the strip according to the target shape curve, so as to effectively improve the shape quality of the edge of...

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Abstract

The invention discloses a target board shape setting method. The target board shape setting method comprises: step S100, confirming a target board shape rolling force compensation value, a coverage rate compensation factor and an outlet thickness compensation factor at a rolling force fluctuation stage; step S200, confirming a target board shape side portion compensation value at the rolling force fluctuation stage; step S300, confirming a dynamic target board shape curve; finally step S400, obtaining board shape deviation according to the dynamic target board shape curve and a measured curve and performing belt material board shape adjustment. The target board shape setting method can improve the board shape material object mass of belt material side portion at the rolling force fluctuation stage and ensures the rolling stability and decrease broken belt situation and the like.

Description

technical field [0001] The invention relates to the cold-rolling technology of strips, more specifically, a method for setting the target shape during the rolling force fluctuation process of cold-rolling the strips. Background technique [0002] In the shape control system of cold-rolled strip steel, the target shape may include the system measurement error and the shape requirements of the next process for this process. Its application reflects the progress of flatness measurement technology and flatness control technology, and is of great significance to flatness control. [0003] Such as figure 1 As shown, the measured shape curve S1 measured by the shape roller and the preset target curve S2 do not completely coincide, and the subtraction of the two curves is the shape deviation (that is, the shaded part d in the figure). The automatic flatness control system identifies the flatness defects according to the flatness deviation, and adjusts the flatness control mechanis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/28
Inventor 陈军宿德军徐江华
Owner BAOSHAN IRON & STEEL CO LTD
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