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Steel rolling roller changing model

A model and roll technology, applied in the field of mathematical models to control roll change during steel rolling, can solve some problems such as inaccurate data and lack of basis for roll change

Active Publication Date: 2019-07-16
LIUZHOU IRON & STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The problem to be solved by the present invention is to provide a roll change model for steel rolling to solve the problem of lack of basis for roll change and inaccurate part of the data caused by defects in the roll change model in existing industrial automation

Method used

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Experimental program
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Effect test

Embodiment Construction

[0050] Embodiments of the present invention are described in further detail below:

[0051] The roll change model of this rolling steel is based on the 1250mm pickling and tandem rolling unit of Liuzhou Iron and Steel Co., Ltd.:

[0052] 1. The material number is L2181016605100, the theoretical length of the exported material is 3839973mm, the actual length of the exported material is 3830959mm, the actual length of the exported material / the theoretical length of the exported material = 1.00, then l 5 =3.831 kilometers. ε 1 , ε 2 , ε 3 , ε 4 , ε 5 are 0.3165, 0.351, 0.2975, 0.2468, 0.07 respectively, then

[0053] l 4 =l 5 ×(1-ε 5 )=3.831×(1-0.07)=3.5628 kilometers;

[0054] l 3 =l 5 ×(1-ε 5 ) × (1-ε 4 )=3.831×(1-0.07)×(1-0.2468)=2.6835 kilometers;

[0055] l 2 =l 5 ×(1-ε 5 ) × (1-ε 4 ) × (1-ε 3 )=3.831×(1-0.07)×(1-0.2468)×(1-0.2975)=1.8852 kilometers;

[0056] l 1 =l 5 ×(1-ε 5 ) × (1-ε 4 ) × (1-ε 3 ) × (1-ε 2 )=3.831×(1-0.07)×(1-0.2468)×(1-0.2975)...

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Abstract

The invention discloses a steel rolling roller changing model. The steel rolling roller changing model comprises the following steps that A, broadsiding is ignored in a cold continuous rolling process; B, secondary setting is carried out and the data is uploaded to a three-level PES system; C, l5 is obtained by measuring the length of a finished product of an acid rolling outlet; and D, the numberof the rolling kilometers of all racks are obtained when the roller is in the machine time period. Through researching and analyzing the relation among the number of the rolling kilometers of 1# to 5# rack working rollers, the number of the rolling kilometers of each rack of the 1# to 4# is calculated by using the number of the rolling kilometers of the 5# rack and the rolling rate of each rack as calculation elements, and a reasonable accurate kilometer number is obtained. According to the steel rolling roller changing model, the problems that in the existing industrial automation, a rollerchanging model is defective, the roller changing basis is missing, and part of data are not accurate can be solved.

Description

technical field [0001] The invention relates to the technical field of cold-rolled steel strip manufacturing, in particular to a mathematical model for controlling roll change during steel rolling. Background technique [0002] The production process of cold-rolled steel strip generally includes hot coiling, feeding and uncoiling, welding, pickling, rolling, coiling, bundling, annealing, skinning, recoil oiling, coiling, and packaging in sequence. The steel coil needs to be replaced when the amount of steel passed by the rolls in the rolling process reaches a certain amount. The commonly used industrial automation (PES) roll change control is to track the amount of steel passed by the rolls and realize the roll change based on the number of rolling kilometers. roll. [0003] The company's cold rolling plant has used PES since December 2016, and there are the following problems: [0004] 1#-3# stand work rolls are based on the rolling tonnage; 4# and 5# stand work rolls are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B31/08B21B38/00G06F17/50
CPCB21B31/08B21B38/00G06F30/20
Inventor 武辉吴春平谭翠英蔡国庆黄运刚潘敏
Owner LIUZHOU IRON & STEEL