Strip rolling reduction rate control method for two-stand four-high mill

A four-high rolling mill and strip rolling technology, applied in the direction of tension/pressure control, etc., can solve the problems of long transformation period, high cost of production equipment transformation, customer loss, etc.

Active Publication Date: 2016-12-28
上海宝钢钢材贸易有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The high cost and long transformation cycle of production equipment will often affect the market supply of enterprises and even cause the loss of customers, so it is generally not easy to consider large-scale transformation of production equipment

Method used

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  • Strip rolling reduction rate control method for two-stand four-high mill
  • Strip rolling reduction rate control method for two-stand four-high mill
  • Strip rolling reduction rate control method for two-stand four-high mill

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0109] Taking a double-stand 1420 rolling mill as an example, with the help of image 3 to describe the rolling reduction setting process for high-grade automotive sheet of a specific specification.

[0110] Firstly, in step 1, the main equipment parameters of the two-stand four-high rolling mill to be set are collected, mainly including the diameters of the work rolls of the first stand and the second stand The maximum rolling pressure P of the first stand and the second stand rolling mill 1max =1800t,P 2max =1800t, the maximum rolling power F of the first stand and the second stand rolling mill 1max =4000Kw, F 2max =4000Kw;

[0111] Subsequently, in step 2, the characteristic parameters of the strip to be rolled are collected, mainly including: the width B=1200mm of the strip; the thickness h of the incoming strip 0 =0.9mm; Elastic modulus E of strip=2.1×10 5 MPa; Poisson's ratio of the strip v=0.3; initial deformation resistance σ of the strip s0 =420MPa; Deformatio...

no. 2 approach

[0138] In order to further illustrate the implementation process of this patent, taking a certain double-stand 1550 rolling mill as an example, with the help of image 3 to describe the rolling reduction setting process for high-grade automotive sheet of a specific specification.

[0139] Firstly, in step 1, the main equipment parameters of the double-stand 1550 four-high rolling mill to be set are collected, mainly including the diameters of the work rolls of the first stand and the second stand The maximum rolling pressure P of the first stand and the second stand rolling mill 1max =2000t, P 2max =2000t, the maximum rolling power F of the rolling mills of the first stand and the second stand 1max =4500Kw,F 2max =4500Kw;

[0140] Subsequently, in step 2, the characteristic parameters of the strip to be rolled are collected, mainly including: the width B=1320mm of the strip; the thickness h of the incoming strip 0 =1.20mm; Elastic modulus E=2.1×10 5 MPa; Poisson's ratio...

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Abstract

The invention discloses a strip rolling reduction rate control method of a double-rack four-roller mill. The strip rolling reduction rate control method includes the steps of collecting parameters, wherein the parameters collected in the parameter collecting step include the parameters of racks and the mill, the parameters of to-be-rolled strips, the rolling technology parameters and the technological lubrication parameters; conducting initialization, wherein the control process parameters are initialized; searching for the optimal reduction rate, wherein control target variables and search parameters are set, looping execution is carried out on the basis of initial values of the control target variables and the search parameters until quit conditions are met, the quit conditions are related to the strip thickness, the looping execution process is stopped after the quit conditions are met, and the optimal reduction rate is output.

Description

technical field [0001] The invention relates to a strip processing technology, in particular to a strip rolling reduction rate control method of a double-stand four-high rolling mill used in the high-grade automobile plate cold rolling and skin-leveling production technology. Background technique [0002] In recent years, with the rapid development of the automobile industry, automobile manufacturers have higher and higher requirements on the quality and output of automobile plates. For steel production enterprises and steel sales enterprises, in the face of the requirements and opinions put forward by automobile production enterprises, it is necessary to improve the quality and output of automobile plates. Automobile sheets are formed by strip processing, and there are two main ways to improve quality and output: upgrade the production equipment or improve the production process. [0003] The high cost and long transformation cycle of production equipment will often affect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/48
CPCB21B37/48
Inventor 张海峰钟辰朱明德季仁康蒋秀华
Owner 上海宝钢钢材贸易有限公司
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