Research on Mill Longitudinal Stiffness Calculation of Wide Hot Strip Mills

2011 ◽  
Vol 211-212 ◽  
pp. 240-245
Author(s):  
Lian Sheng Wang ◽  
Quan Yang ◽  
An Rui He ◽  
Tian Wu Liu ◽  
De Fu Guo ◽  
...  
Keyword(s):  
Hydraulic System ◽  
Functional Relationship ◽  
Theoretical Formula ◽  
Strip Line ◽  
Geometric Accuracy ◽  
Parallel Connection ◽  
Hot Strip ◽  
Longitudinal Stiffness ◽  
Hot Strip Mills ◽  
Set Up

Mill is always weighed by its longitudinal stiffness. The prediction precision of longitudinal stiffness related strip geometric accuracy. Taking 1700mm hot strip line as research object, stiffness of housing, bearing wall and roll was calculated by finite elements method(FEM), hydraulic system stiffness was obtained by theoretical formula. Analyzing vertical system and structural symmetry of mill, functional relationship between longitudinal stiffness and its components stiffness was derived according to series or parallel connection with various components. Longitudinal stiffness was the basis on thickness set-up model. Calculation result was verified by practical test.

An online parallel controller for the runout table of hot strip mills

2001 ◽  
Vol 9 (6) ◽  
pp. 821-830 ◽  
Author(s):  
R.K. Kumar ◽  
S.K. Sinha ◽  
A.K. Lahiri
Keyword(s):  
Hot Strip ◽  
Hot Strip Mills ◽  
Runout Table

Time Synchronization in Tandem Hot Strip Line Based on Improved Broadcast Mode

2013 ◽  
Vol 341-342 ◽  
pp. 679-683
Author(s):  
Jian Zhao Cao ◽  
Dian Hua Zhang
Keyword(s):  
Control System ◽  
Process Control ◽  
Time Synchronization ◽  
Process Control System ◽  
New Method ◽  
Strip Line ◽  
Total Delay ◽  
Synchronization Problem ◽  
Hot Strip ◽  
Distributed Process

In order to solve the time synchronization problem in tandem hot strip line, the traditional algorithm of time synchronization was analyzed, and the server-client mode was compared with the broadcast mode using multithread technology, then the present paper improved the broadcast mode to improve its precision. The new method can estimate total delay including clock offset and network transmission time. A simple, easy and little loading time synchronization method was designed for the distributed process control system of tandem hot strip line. The new method was applied in domestic some tandem hot strip line successfully which showed that it could meet the demands of process control system with little expenses, simple structure and high precision.

A Robust Width Control Design for Hot Strip Mills: An LPV System Approach with Time Variable Transformation

2001 ◽  
Vol 34 (18) ◽  
pp. 107-112
Author(s):  
Hideaki Takahashi ◽  
Hisaya Fujioka ◽  
Yutaka Yamamoto ◽  
Makishi Nakayama
Keyword(s):  
System Approach ◽  
Control Design ◽  
Time Variable ◽  
Variable Transformation ◽  
Hot Strip ◽  
Lpv System ◽  
Hot Strip Mills

Development of slab sizing press for extensive width reduction in hot strip mills

1989 ◽  
Vol 86 (4) ◽  
pp. 335-342 ◽  
Author(s):  
T. Fujitsu ◽  
T. Fujimoto ◽  
H. Nikaido ◽  
M. Nihei
Keyword(s):  
Hot Strip ◽  
Hot Strip Mills ◽  
Width Reduction

Rolling of stainless steel in wide hot strip mills

1975 ◽  
Vol 2 (1) ◽  
pp. 565-576 ◽  
Author(s):  
H. Wright ◽  
T. Hope
Keyword(s):  
Stainless Steel ◽  
Hot Strip ◽  
Hot Strip Mills

Statistical Evaluation of Some Hot Rolling Theories

1982 ◽  
Vol 104 (1) ◽  
pp. 47-52 ◽  
Author(s):  
A. Murthy ◽  
J. G. Lenard
Keyword(s):  
Experimental Data ◽  
Hot Rolling ◽  
Laboratory Experiments ◽  
Statistical Evaluation ◽  
Low Carbon ◽  
Flow Strength ◽  
Hsla Steels ◽  
Accuracy And Precision ◽  
Hot Strip ◽  
Hot Strip Mills

The accuracy and precision of four mathematial models of varying complexity are evaluated by comparing their predictions to experimental data generated in carefully controlled laboratory experiments and to production logs obtained from the finishing trains of several Canadian, American, and European hot strip mills. The materials rolled are low carbon and HSLA steels; the models used are Orowan’s formulation with Shida’s flow strength and Ford and Alexander’s formulation with Shida’s flow strength; then both these formulations are combined with Ekelund’s flow strength equation. It is concluded that Orowan’s formulation with Shida’s flow strength relation is the most consistently accurate technique of analysis. Further, the behavior of HSLA steels is not well described by either Shida’s or Ekelund’s equations.

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