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Method for controlling middle, low grade electric steel rolling using conventional rolling model

A technology of electrical steel and low grades, applied in rolling mill control devices, metal rolling, manufacturing tools, etc., can solve problems such as poor control accuracy, and achieve the effect of improving accuracy and setting accuracy

Inactive Publication Date: 2009-04-29
PANGANG GROUP VANADIUM TITANIUM & RESOURCES
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Problems solved by technology

[0025] In order to overcome the shortage of poor control accuracy of the existing conventional hot rolling mathematical model for controlling the production of low-grade electrical steel, the technical problem to be solved by the present invention is to provide a conventional rolling model-based control medium-low Rolling method of grade electrical steel

Method used

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  • Method for controlling middle, low grade electric steel rolling using conventional rolling model
  • Method for controlling middle, low grade electric steel rolling using conventional rolling model
  • Method for controlling middle, low grade electric steel rolling using conventional rolling model

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Embodiment

[0053] Such as Figure 1 ~ Figure 1 As shown in 1, the present invention is a method for controlling the rolling of medium and low grade electrical steels based on conventional rolling models.

[0054]First of all, the relationship between deformation temperature and deformation resistance of medium and low-grade electrical steel is studied through experiments, and the corresponding test data are obtained. According to the test data, the main influencing factors of the deformation resistance of electrical steel are analyzed, and finally the relationship curve between deformation resistance and temperature is drawn to provide the basic data for establishing the correction algorithm of the rolling model of electrical steel.

[0055] The deformation resistance curve test was completed on the Gleeble-3500 thermal / mechanical simulation testing machine. The testing machine can accurately simulate the thermal processing state of metal materials and accurately measure and record vari...

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Abstract

The invention discloses a method for controlling the rolling of medium and lower grade electric steel, which can meet the requirements of control accuracy and relies on a conventional rolling control mould. The method comprises the following steps: a relation curve between the deformation temperature and the deformation resisting force corresponding to the steel grade of the medium and lower grade electric steel is obtained by tests, the algorithm of the deformation resisting force in a conventional rolling mould is corrected according to the relation curve; an independent steel grade property list and a thickness interval list corresponding to the grades of the steel grade are established in the data area of the conventional rolling mould; according to the grades of the steel grade, the corresponding independent steel grade property list and the thickness interval list thereof are called for involving control; the 'inflexion' temperature of the deformation resisting force is determined according to the relation curve, and a rack corresponding to the 'inflexion' temperature is determined by the comparison with the set rack temperature distribution of the a temperature mould, and the correcting algorithm of the deformation resisting force is called for calculating the rolling force of the electric steel by the determined rack corresponding to the 'inflexion' temperature in the mould calculation process. The method is applicable to the rolling of the medium and lower grade electric steel.

Description

technical field [0001] The invention relates to a method for controlling the rolling of medium and low grade electrical steel, in particular to a method for controlling the rolling of medium and low grade electrical steel relying on a conventional strip steel hot rolling model. Background technique [0002] Domestic hot rolling mills producing medium and low-grade electrical steel basically import special models from abroad for mass production. At present, there is no domestic precedent for successful mass production of medium and low-grade electrical steel relying on conventional hot rolling mathematical models. [0003] The conventional hot rolling mathematical model has three major data areas: steel characteristic data area, thickness interval data area and constant area, and has the following functions: setting function, self-learning function, self-adaptive strip threading function. The main models of setting functions are: rolling roll gap model adopts thickness meter ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/00
Inventor 胡松涛
Owner PANGANG GROUP VANADIUM TITANIUM & RESOURCES
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