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A Method and System for Improving the Prediction of Power Parameters of Straightening Machine

A straightening force and straightening technology, which is applied in the field of improving the prediction of the force and performance parameters of the straightening machine, can solve the problem of low control effect, and achieve the effect of reducing the difficulty.

Active Publication Date: 2019-05-28
北京冶自欧博科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the above-mentioned technical problems, the present invention provides a method for improving the forecasting of the force parameters of the straightening machine, which can solve the problem that the current control effect is not high

Method used

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  • A Method and System for Improving the Prediction of Power Parameters of Straightening Machine
  • A Method and System for Improving the Prediction of Power Parameters of Straightening Machine
  • A Method and System for Improving the Prediction of Power Parameters of Straightening Machine

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] A method to improve the prediction of the energy parameters of the straightening machine, such as figure 1 As shown, the method includes the following steps:

[0070] S1: Initialize the inverse curvature of each straightening roller, the inclination angle of the straightening entrance and the number of straightening rollers;

[0071] S2: Calculate the pressing displacement and straightening force of each straightening roller;

[0072] S3: Calculate the actual pressing displacement according to the straightening force of each straightening roller calculated in step S2, the stiffness of the roll and the spring displacement of the rolling mill;

[0073] S4: Calculate the error between the pressing displacement and the actual pressing displacement, and compare it with the error threshold range, if the error is not within the error threshold range, proceed to step S5, and if the error is within the error threshold range, proceed to step S6;

[0074] S5: Adjust the anti-cur...

Embodiment 2

[0083] A method for improving the prediction of the power parameters of a straightening machine, the method differs from Embodiment 1 in that, as figure 2 As shown, step S2 calculates the straightening force of each straightening roller and specifically includes the following steps:

[0084] S21: Initialize the inclination angle, residual curvature, residual stress and inverse curvature of the i-th roll at the entrance of the first roll, where i is 2-N rolls, and N is the total number of straightening rolls;

[0085] S22: starting from the second roll, calculate the stress, strain, bending moment, residual curvature and residual stress of each straightening roll according to steps P1-P2;

[0086] P1: Calculate the stress, strain and bending moment of each layer of the strip layered in the thickness direction under the i-th roll according to the initial inverse curvature of the i-th roll, and the residual curvature and residual stress of the i-1th roll;

[0087]

[0088] σ...

Embodiment 3

[0105] A method for improving the prediction of force parameters of a straightening machine. The difference between this method and Embodiment 2 is that the actual reduction displacement is calculated by formula 3:

[0106]

[0107] in,

[0108] y_real(i) is the actual pressing displacement of the i-th roller;

[0109] Redu(i) is the reduction of the i-th rack;

[0110] s_f(i) is the straightening force of the i-th roller;

[0111] Bounce_Coef is the stiffness coefficient of the roll;

[0112] Yframe(i) is the mill bounce displacement of the i-th roll

[0113] The mill bounce displacement Yframe(i) of the i-th roll is calculated through the following steps:

[0114] S31: Calculate the force of the front and rear frame arches according to the moment balance;

[0115] S32: Divide the force of the front and rear frame archways by the frame stiffness to obtain the displacement at the position of the archway;

[0116] S33: Obtain the rolling mill bounce displacement Yframe...

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Abstract

The invention a method and a system for improving straightening machine force-energy parameter prediction. The method comprises the following steps: initializing the reverse bend curvature and straightening entrance tilt angle of each straightening roll and the number of the straightening rolls; calculating the pressure displacement and straightening force of each straightening roll according to the beam bending integral theory; calculating the actual pressure displacement according to the calculated straightening force of each straightening roll and the stiffness and mill bounce displacement of the rolls; according to the error between the pressure displacement and the actual pressure displacement, using an optimization algorithm to adjust and correct the reverse bend curvature and the straightening entrance tilt angle to make the error less than a set target value; and judging whether there is any straightening roll which is lifted up and does not contact steel strip according to the calculation result; if there is any straightening roll which is lifted up and does not contact steel strip, deleting the straightening roll which does not contact strip steel, changing the number of the straightening rolls, and performing calculation again; or, ending calculation, and outputting the result. By using the method and the system, the accuracy of straightening roll parameter prediction can be improved to 95%.

Description

technical field [0001] The invention belongs to the field of straightening treatment of medium and thick plate production lines, and in particular relates to a method and system for improving the forecast of power parameters of a straightening machine. Background technique [0002] The straightening machine is arranged on the medium and heavy plate rolling line to eliminate the single-sided and double-sided wavy bending of the steel plate during the rolling process, improve the accuracy of the unevenness of the steel plate, and eliminate the key equipment for residual stress. [0003] With the continuous development of domestic steel rolling technology and the application of controlled cooling and rolling technology, the requirements for the width, thickness, flatness and yield limit of the steel plate to be straightened are constantly increasing, and the performance requirements for the straightening machine are also getting higher and higher. . The production of medium an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 孟新伍延平唐超
Owner 北京冶自欧博科技发展有限公司