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Automatic controlling technical parameter optimization method of metal plate rolling

A technology of metal strips and process parameters, which is applied in the field of metal rolling, can solve the problems of continuous measurement of deformation resistance and friction coefficient, reduction of parameter calculation accuracy, and simultaneous acquisition

Inactive Publication Date: 2005-03-09
NORTHEASTERN UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the deformation resistance and friction coefficient cannot be continuously measured during the production process, so the actual value can only be calculated indirectly through the actual rolling force
Since the rolling force is a function of the deformation resistance and the friction coefficient, it is impossible to obtain the two calculated values ​​of the deformation resistance and the friction coefficient at the same time through the measured value of the rolling force. Therefore, in the past, only one value can be fixed and the other value can be calculated. Will reduce the calculation accuracy of the parameters

Method used

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  • Automatic controlling technical parameter optimization method of metal plate rolling
  • Automatic controlling technical parameter optimization method of metal plate rolling
  • Automatic controlling technical parameter optimization method of metal plate rolling

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Embodiment Construction

[0061] The invention has been successfully tested on a 1220mm cold rolling mill for cold strip steel. Thickness specification: 1.5-3.5mm; Finished product thickness: 0.2-0.8mm; Width: 550-1020mm; Steel type: SPHC, MRT, Stw22; Work roll diameter: 550mm; Support roll diameter: 1194mm; , Power 3800kW, digital revolution measurement encoder maximum measurement range 1100r / min. The indenter (rolling force sensor) is piezo-magnetic, with a maximum measuring range of 10MN. The speed measurement range of the laser speedometer is 0.6~2520mpm, and the measurement accuracy is ±0.025%. The process optimization computer adopts P4-1.8GHz microcomputer, and the program is written by Visual C++.

[0062] Take the strip rolled steel grade SPHC as an example, the entrance thickness is 2.3mm, the exit thickness is 1.67mm, and the strip width is 1020mm. The motor speed measured by the motor encoder is v R=769m / min, the strip exit velocity v=787m / min measured by the laser velocimeter, and the ...

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Abstract

A method for automatically optimizing the technological parameters in rolling metallic plate or band features use of an automatic control system composed of an in-line automatic measuring unit, a network communication unit and a data processing unit with computer. It includes measuring the rolling force F and advancing value fs, inserting them in a dyadic high-order non-linear equations to find out deforming resistance K and friction coefficient Mu, adaptive learning of the calculation module, and optimizing.

Description

Technical field [0001] The invention belongs to the field of metal rolling, and is particularly suitable for the optimization of automatic control process parameters in the strip rolling process. technical background [0002] The core of high-precision control of metal (including iron, aluminum, copper, molybdenum, titanium and other metals and alloys) strip rolling process is to obtain accurate rolling force setting value. In order to obtain an accurate rolling force setting value, it is necessary to first obtain accurate calculation values ​​of deformation resistance and friction coefficient. Metal strip rolling is a multivariable, nonlinear, and strongly coupled process. It is difficult to calculate accurate rolling process parameters from a theoretical point of view, which affects the control accuracy of strip rolling and causes product quality defects. [0003] For this reason, testing instruments are used at home and abroad to measure the process parameters of the rol...

Claims

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Application Information

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IPC IPC(8): B21B37/58
Inventor 王军生王国栋刘相华白金兰宋蕾
Owner NORTHEASTERN UNIV
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