Adaptive calculation of deformation resistance model of online process control in tandem cold mill

2005 ◽  
Vol 162-163 ◽  
pp. 585-590 ◽  
Author(s):  
J.S. Wang ◽  
Z.Y. Jiang ◽  
A.K. Tieu ◽  
X.H. Liu ◽  
G.D. Wang
Keyword(s):  
Process Control ◽  
Deformation Resistance ◽  
Resistance Model ◽  
Tandem Cold Mill ◽  
Online Process ◽  
Cold Mill

1450mm Five-Stand Tandem Cold Mill Process Control System

2014 ◽  
Vol 602-605 ◽  
pp. 1248-1251
Author(s):  
He Nan Bu ◽  
Zhu Wen Yan ◽  
Wen Peng ◽  
Shu Zong Chen ◽  
Dian Hua Zhang
Keyword(s):  
Control System ◽  
Process Control ◽  
Rolling Process ◽  
Process Control System ◽  
Rolled Sheet ◽  
Structural Framework ◽  
Stable Production ◽  
Tandem Cold Mill ◽  
And Function ◽  
Cold Mill

The process control system for tandem cold mill is the core of the production line control system. Its operating status influences the stable production of strip directly. In this paper a tandem cold rolling process control system of cold-rolled sheet plant was taken as an object, the structural framework of control system was designed, the composition and function was introduced.

Precise Rolling Force Calculation for the Tandem Cold Mill

2007 ◽  
Vol 561-565 ◽  
pp. 1883-1886
Author(s):  
Zhi Jie Jiao ◽  
Hao Zhang ◽  
Jing Wang ◽  
Chui Hong Liu ◽  
Xiang Hua Liu
Keyword(s):  
Rolling Force ◽  
Steel Grade ◽  
Rolling Speed ◽  
Force Model ◽  
Technical Parameter ◽  
Calculation Process ◽  
Tandem Cold Mill ◽  
Force Calculation ◽  
Online Process ◽  
Cold Mill

Rolling force is the most important technical parameter for the tandem cold mill. In this paper, the precise models and calculation process for the rolling force are introduced. The rolling force model is based on the Bland-Ford and Hill theory, and the roll flatten radius is calculated with the Hitchcok’s formula. The deformation resistance of the strip is calculated with the model, whose parameters are decided according to the steel grade. The friction coefficient model is built according to rolling speed and rolled length of the roll. The rolling force and the roll flatten radius are calculated with the iterative method. These models are used for online process control of one five-stand tandem cold mill. Comparing the calculation result and the actual data, the precision of the rolling force calculation is high.

Thyristor-supplied tandem cold mill

1968 ◽  
Vol 115 (10) ◽  
pp. 1513
Author(s):  
D.W. Draper ◽  
R.J. Goodridge
Keyword(s):  
Tandem Cold Mill ◽  
Cold Mill

Research of Virtual Inertial Control in AC Driver System of Tandem Cold Mill

2021 ◽  
Author(s):  
Jin Wang ◽  
Dapeng Zheng ◽  
Qian Zhang ◽  
Hailong Li ◽  
Chunyi Zhu
Keyword(s):  
Inertial Control ◽  
Tandem Cold Mill ◽  
Cold Mill

Bench to Full-Scale Enhanced Primary Treatment of Municipal Wastewater under Wet Weather Flow for Minimized Pollution Load: Evaluation of Chemical Addition and Process Control Indicators

2020 ◽  
Author(s):  
Mirna Alameddine ◽  
Abdul Rahim Al Umairi ◽  
Mohammed Zakee Shaikh ◽  
Mohamed Gamal El-Din
Keyword(s):  
Process Control ◽  
Municipal Wastewater ◽  
Weather Conditions ◽  
Primary Treatment ◽  
Full Scale ◽  
Operation Conditions ◽  
Wet Weather ◽  
Slow Mixing ◽  
Load Evaluation ◽  
Online Process

The enhanced primary treatment of municipal primary influent under wet weather conditions was studied through a comprehensive approach from bench to full scale. The study delivered a practical solution for managing seasonal fluctuations in the influent wastewater by determining the most effective operation conditions for coagulation/flocculation. Three metal-based coagulants were tested through a series of jar tests. Alum outperformed other coagulants since 1 mg of Al added as alum with low mixing was able to remove 22 NTUs, 19 mg COD and 0.8 mg ortho-P. Three-factor ANOVA indicated that TSS removal depended mostly on rapid mixing while COD and ortho-P removals depended on slow mixing and coagulant dose. In bench and full-scale operations, the addition of polymer did not lead to any pronounced improvements. Finally, turbidity and percent ultraviolet transmittance showed good correlation with TSS and ortho-P which evokes their use as surrogates for micropollutants removal and online process control.

Advanced set-up and control system for Dofasco's tandem cold mill

2002 ◽  
Author(s):  
K. Sekiguchi ◽  
Y. Seki ◽  
N. Okitani ◽  
M. Fukuda ◽  
S. Critchley ◽  
...  
Keyword(s):  
Control System ◽  
Tandem Cold Mill ◽  
Set Up ◽  
And Control ◽  
Cold Mill

The Integrated Robust Control of Interstand Strip Tension for Tandem Cold Rolling Mill

2010 ◽  
Vol 145 ◽  
pp. 230-237 ◽  
Author(s):  
Xiao Feng Zhang ◽  
Qing Dong Zhang ◽  
Meng Yu ◽  
Kang Jian Wang ◽  
Pei Jie Huang
Keyword(s):  
Cold Rolling ◽  
Rolling Mill ◽  
Controller Design ◽  
Integrated Control ◽  
Cold Rolling Mill ◽  
Tandem Cold Rolling ◽  
Synthesis Design ◽  
Tandem Cold Mill ◽  
Strip Quality ◽  
Cold Mill

We describe an integrated tension controller design for a tandem cold rolling mill in steel plants. To achieve stable rolling and ensure strip quality, it is very important to control the tension of the cold rolling mill. Previous researches examined only the operation of a single stand. But it is not sufficient to examine the operation and effect of whole stands because the operation is wholly interdependent. To solve the problem, this paper proposes an integrated control strategy for tension control of tandem cold mill, the full stand model for the tension system of a tandem cold mill is built, and the interaction of all the stands is analyzed. Then applying the method of μ-synthesis design a integrated robust tension controller. Simulation with the practical data proves the integrated robust tension controller can achieve more robust performance than that of typical industrial approach.

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