Calculation Strategy of Automatic Shape Control in Hot Strip Mill

2014 ◽  
Vol 529 ◽  
pp. 591-594
Author(s):  
Zi Ying Liu ◽  
Yan Guang Sun ◽  
Xiang Rong Song
Keyword(s):  
Control System ◽  
Shape Control ◽  
Distribution Model ◽  
Good Effect ◽  
Hot Strip Mill ◽  
Hot Strip Rolling ◽  
Strip Rolling ◽  
Practical Applications ◽  
Hot Strip ◽  
Profile Distribution

This paper, aimed at Ganglu 1500 hot strip rolling project, developed advanced shape control system. Entry profile calculation strategy was developed. Natural output profile was defined. Profile distribution model based on the buckling limit was developed. Practical applications in domestic 1500 hot strip mill show that the setup calculation strategy achieved good effect and enhanced the profile and flatness precision

Strip Width Model in Hot Strip Rolling

2014 ◽  
Vol 926-930 ◽  
pp. 856-859
Author(s):  
Kai Wu ◽  
Xiang Rong Song ◽  
Zi Ying Liu
Keyword(s):  
Calculation Model ◽  
Strip Width ◽  
Good Effect ◽  
Hot Strip Mill ◽  
Hot Strip Rolling ◽  
Strip Rolling ◽  
Practical Applications ◽  
Hot Strip ◽  
Flat Rolling ◽  
Physical Phenomena

This paper has researched strip width model in hot strip rolling. Analyzed physical phenomena influencing strip width, established calculation model in production including width spread during flat rolling, width change induced by bending, width changed by high temperature creep and thermal expansion and contraction during rolling. Practical applications in domestic 1500 hot strip mill show that the width model achieved good effect and enhanced the calculation precision.

scholarly journals Simulation of Shape Control for CVC Hot Strip Rolling

2011 ◽  
Vol 15 ◽  
pp. 1166-1170 ◽  
Author(s):  
GUO Zhong-feng ◽  
SUN Xue-yan ◽  
WANG Qi ◽  
ZHANG Yi ◽  
GUO Hui
Keyword(s):  
Shape Control ◽  
Hot Strip Rolling ◽  
Strip Rolling ◽  
Hot Strip

Application of Deformation to Improve Hot Ductility in the Peritectic Steel

2005 ◽  
Vol 500-501 ◽  
pp. 203-210 ◽  
Author(s):  
Ahmad Rezaeian ◽  
Faramarz Zarandi ◽  
D.Q. Bai ◽  
Steve Yue
Keyword(s):  
Flow Stress ◽  
High Strength ◽  
Microalloyed Steels ◽  
Hot Strip Mill ◽  
Mean Flow ◽  
Hot Strip Rolling ◽  
Strip Rolling ◽  
Slip Ratio ◽  
Hot Strip ◽  
Mean Flow Stress

The hot strip rolling of advanced microalloyed high strength steels still represents a new task to many mills due to the lack of data on the hot deformation resistance. With the aid of processing data from the Ispat-Inland hot strip mill, the “measured mean flow stresses” are calculated from the mill force using the Sims analysis and taking into account roll flattening, slip ratio and the redundant strain. A modification of the Misaka mean flow stress equation is proposed for C – Mn – Si – Al steels microalloyed with up to 0.02 % Nb. The effects of alloying and microalloying are then estimated. A new fitting parameter shows excellent agreement with the mean flow stress data from industrial processing of advanced high strength microalloyed steels. However, during the second half of the rolling schedule (lower temperature region), indications of austeniteto- ferrite transformation were found.

Application of PDA Industry Data Acquisition System in Analysis of the Reason of Strip Blocked in Hot Mill

2012 ◽  
Vol 591-593 ◽  
pp. 1758-1761
Author(s):  
Su Ying Hu ◽  
He Bao Yu
Keyword(s):  
Control System ◽  
Data Acquisition ◽  
Sampling Rate ◽  
Data Acquisition System ◽  
Fault Analysis ◽  
Acquisition System ◽  
Hot Strip Rolling ◽  
Strip Rolling ◽  
High Sampling Rate ◽  
Hot Strip

PDA, one product from iba AG, is one open progress data acquisition system used for automatic control system. After the simple introduction about the PDA, an application in AISC hot-strip Rolling Mill was shown for analyzing the reason of strip block. The fact showed that the PDA system had many advantage, high sampling rate, highly real-time performance, highly stability, and provide impersonal and accurate evidence for driven system commissioning. Also, this system could record data for fast fault analysis and time sequence analyzing of AUTO control system.

Computational Model of Work Roll Temperature Distribution during Hot Strip Rolling Process

2012 ◽  
Vol 229-231 ◽  
pp. 2432-2435
Author(s):  
Xing Dong Li ◽  
Yan Xia Shan ◽  
Chang Hong Guo
Keyword(s):  
Computational Models ◽  
Work Roll ◽  
Rolling Process ◽  
Hot Strip Mill ◽  
Hot Strip Rolling ◽  
Strip Rolling ◽  
Roll Temperature ◽  
Hot Strip ◽  
Temperature Field Model ◽  
Deformation Work

Computational models of deformation and friction work were established by dividing contact arc between strip and work roll into two sliding regions, two braking regions and one stagnating region. A two dimensional temperature field model of work roll was established by finite difference method according to practical boundary conditions. Simulation results show that with the increase of rolling pass, deformation work reduced while friction work increased, except that deformation and friction works at the last pass were the least. The computed rolling forces and work roll surface temperatures agree well with measured values collected from a hot strip mill.

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