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Emulsion flow optimization method for inhibiting vibration of cold continuous rolling unit

A cold tandem rolling unit and flow optimization technology, applied in the field of cold tandem rolling, can solve problems that are not the main treatment objects

Active Publication Date: 2020-02-28
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned patents mainly start from monitoring equipment, forward slip calculation model, emulsion flow control, etc., to realize the control of rolling mill vibration; vibration is only a constraint condition of emulsion flow control, not the main control object

Method used

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  • Emulsion flow optimization method for inhibiting vibration of cold continuous rolling unit
  • Emulsion flow optimization method for inhibiting vibration of cold continuous rolling unit
  • Emulsion flow optimization method for inhibiting vibration of cold continuous rolling unit

Examples

Experimental program
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Effect test

Embodiment 1

[0103] In order to further illustrate the application process of the related technology described in the present invention, take the cold rolling mill 1730 tandem cold rolling unit as an example, the application process of the emulsion flow optimization method aimed at vibration suppression in the tandem cold rolling mill.

[0104] An emulsion flow optimization method for suppressing vibration of a cold tandem rolling mill, comprising the following steps:

[0105] S1. Collect the equipment characteristic parameters of the tandem cold rolling mill. The 1730 tandem cold rolling mill in the cold rolling plant has 5 stands in total, mainly including: the radius R of the work roll of each stand i ={210,212,230,230,228}mm, surface speed v of each stand roll ri ={180,320,500,800,1150}m / min, original roughness Ra of work rolls of each frame ir0 ={1.0,1.0,0.8,0.8,1.0}um, work roll roughness attenuation coefficient B L =0.01, the distance between stands l=2700mm, the rolling kilometer...

Embodiment 2

[0145] In order to further illustrate the application process of the related technology described in the present invention, take the cold rolling mill 1420 as an example, the application process of the emulsion flow optimization method aimed at vibration suppression in the cold rolling mill.

[0146] An emulsion flow optimization method for suppressing vibration of a cold tandem rolling mill, comprising the following steps:

[0147] S1. Collect the equipment characteristic parameters of the tandem cold rolling mill. The 1420 tandem cold rolling mill in the cold rolling plant has 5 stands in total, mainly including: the radius R of the work roll of each stand i ={211,213,233,233,229}mm, surface speed v of each stand roll ri ={182,322,504,805,1153}m / min, original roughness Ra of work rolls of each frame ir0 ={1.0,1.0,0.9,0.9,1.0}um, work roll roughness attenuation coefficient B L =0.015, the distance between the stands l=2750mm, the number of rolling kilometers L after the wor...

Embodiment 3

[0188] In order to further illustrate the application process of the related technology described in the present invention, take the cold rolling mill 1220 as an example, the application process of the emulsion flow optimization method aimed at vibration suppression in the cold rolling mill.

[0189] An emulsion flow optimization method for suppressing vibration of a cold tandem rolling mill, comprising the following steps:

[0190] S1. Collect the equipment characteristic parameters of the tandem cold rolling mill. The 1220 tandem cold rolling mill in the cold rolling plant has 5 stands in total, mainly including: the radius R of the work roll of each stand i ={208,210,227,226,225}mm, the surface speed v of each stand roll ri ={176,317,495,789,1146}m / min, original roughness Ra of working rolls of each frame ir0 ={0.9,0.9,0.7,0.7,0.8}um, work roll roughness attenuation coefficient B L =0.01, the distance between stands l=2700mm, the rolling kilometers L of each stand after t...

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Abstract

The invention discloses an emulsion flow optimization method for inhibiting the vibration of a cold continuous rolling unit, relates to the technical field of cold continuous rolling, and particularlyrelates to the emulsion flow optimization method suitable for the cold continuous rolling unit and taking vibration inhibition as a target. The method is characterized in that the vibration inhibition is taken as a target, on the basis that the over-lubricating oil film thickness critical value and the under-lubricating oil film thickness critical value are provided, and through an oil film thickness model and a friction coefficient model, the emulsion flow optimal set values, taking the vibration inhibition as the target, of racks are obtained. According to the method, the occurrence rate ofvibration defects of a rolling mill is greatly reduced, the production efficiency and the product quality are improved, and great economic benefits are brought to enterprises; and the vibration defects of the rolling mill are overcome, and the surface quality and the rolling process stability of finished strip steel of the cold continuous rolling unit are improved.

Description

technical field [0001] The invention relates to the technical field of tandem cold rolling, in particular to an emulsion flow optimization method for suppressing vibration of a tandem cold rolling mill. Background technique [0002] Rolling mill vibration defects have always been one of the difficult problems that plague the high-speed and stable production of on-site cold tandem rolling mills and ensure the surface quality of finished strips. In the past, on-site treatment of rolling mill vibration defects generally relied on the control of rolling mill speed. Although this can reduce vibration defects, it restricts the improvement of production efficiency and seriously affects the economic benefits of the enterprise. However, for the tandem cold rolling mill, the characteristics of its equipment and process determine the potential of suppressing vibration. Therefore, setting reasonable process parameters is the core means of suppressing vibration. Through theoretical rese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/00B21B45/02G06F30/20
CPCB21B37/00B21B45/0239B21B45/0266B21B2037/002B21B37/007B21B1/28
Inventor 王康健瞿培磊
Owner BAOSHAN IRON & STEEL CO LTD
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