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Rolling force and rolling moment setting method for steel strip cold rolling full deformation area

A technology of rolling torque and setting method, applied in the field of rolling production

Pending Publication Date: 2022-07-08
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no method for setting the rolling force and rolling moment in the full deformation zone of the plastic zone and elastic zone of steel strip rolling

Method used

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  • Rolling force and rolling moment setting method for steel strip cold rolling full deformation area
  • Rolling force and rolling moment setting method for steel strip cold rolling full deformation area
  • Rolling force and rolling moment setting method for steel strip cold rolling full deformation area

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0177] Taking the 1740mm five-stand six-high tandem cold rolling mill as an example, the work roll diameter of the mill is 430-480mm, the intermediate roll diameter is 510-580mm, the backup roll diameter is 1315-1465mm, and the maximum rolling force of the mill is 32000kN. The thickness of each rolling pass of DP590 steel strip with a width of 1358mm before rolling (ie, the thickness at the entrance of the rolled steel strip / thickness before rolling), the thickness after rolling (the thickness at the exit of the rolled steel strip / the thickness after rolling), the front and rear tension and the use of the present invention The rolling force calculated by the method and the measured rolling force are shown in Table 1.

[0178] Table 1 Example 1 Steel strip thickness, front and rear tension, calculated rolling force and measured rolling force

[0179]

[0180]

[0181] It can be seen from Table 1 that the error between the cold rolling force of DP590 steel strip calculated...

Embodiment 2

[0183] Taking the 1740mm five-stand six-high tandem cold rolling mill as an example, the work roll diameter of the mill is 430-480mm, the intermediate roll diameter is 510-580mm, the backup roll diameter is 1315-1465mm, and the maximum rolling force of the mill is 32000kN. The thickness of each rolling pass of W780QX steel strip with a width of 1223 mm before rolling (namely, the thickness at the entrance of the rolled steel strip / thickness before rolling), the thickness after rolling (the thickness at the exit of the rolled steel strip / the thickness after rolling), the front and back tension and the use of the present invention The rolling force calculated by the method and the measured rolling force are shown in Table 2.

[0184] Table 2 Example 2 Steel strip thickness, front and rear tension, calculated rolling force and measured rolling force

[0185]

[0186] It can be seen from Table 2 that the error between the cold rolling force and the measured rolling force of the...

Embodiment 3

[0188] Taking a 1340mm six-high tandem cold rolling mill as an example, the work roll diameter of the mill is 420-460mm, the intermediate roll diameter is 440-490mm, the backup roll diameter is 1000-1090mm, and the maximum rolling force of the mill is 15000kN. The thickness of each rolling pass of 16Mn steel strip with a width of 919.0mm (thickness at the entrance of the rolled steel strip / thickness before rolling), thickness after rolling (ie the thickness at the exit of the rolled steel strip / thickness after rolling), front and rear tension and use The rolling force calculated by the inventive method and the measured rolling force are shown in Table 3.

[0189] Table 3 Example 3 Steel strip thickness, front and rear tension, calculated rolling force and measured rolling force

[0190]

[0191] As can be seen from Table 3, the 16Mn steel strip cold rolling force calculated by the present invention has an error of less than 7.4% and the measured rolling force, and the error...

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Abstract

The invention belongs to the technical field of rolling production, and particularly relates to a rolling force and rolling moment setting method for a steel strip cold rolling full-deformation area. The method mainly comprises the following steps that S1, rolling parameters are determined; s2, dividing a deformation area; s3, calculating the thickness of a plastic deformation area inlet and the thickness of a plastic deformation area outlet; s4, calculating a neutral angle parameter; s5, the total unit width rolling force of the rolling deformation area is calculated; s6, calculating the torque per unit width; and S7, according to the finally obtained total unit width rolling force calculation value and unit width torque calculation value of the rolling deformation area, the rolling force and the rolling torque in the rolling process are set. According to the method, the difference of the plastic deformation area and the elastic deformation area on rolling pressure is considered in the calculation process, the influence of the rolling plastic area and the elastic deformation area is comprehensively considered, and the calculation error value of the rolling force is set to be within 8%.

Description

technical field [0001] The invention belongs to the technical field of rolling production, and in particular relates to a method for setting rolling force and rolling torque in the full deformation zone of cold rolling of a steel strip. Background technique [0002] Rolling force is an important parameter to formulate the rolling process in the steel strip rolling process. Rapid and accurate prediction of the rolling force is particularly important in the steel strip rolling process. Setting and control of roll gap and rolling speed in rolling process. With the development of plate and strip production technology and the improvement of product thickness accuracy and shape quality requirements, as the key and fundamental requirements for producing qualified steel strips, a reasonable rolling force calculation model and high-precision model directly affect the thickness control of the steel strip and the Shape quality is the basis for automatic control of steel strips. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/17B21B37/58G06F119/14
CPCG06F30/17B21B37/58G06F2119/14
Inventor 李长生王煜冯平杰彭良贵
Owner NORTHEASTERN UNIV
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