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

A New Off-Line Computer Model for Improving Width Reduction in Roughing Trains of Hot Strip Mills of Mobarakeh Steel Company

2009 ◽  
Author(s):  
M. Eghtesad ◽  
S. Javid ◽  
J. Izadi ◽  
M. Rasouli ◽  
Y. Bazargan-Lari ◽  
...  
Keyword(s):  
Computer Model ◽  
Hot Strip Mill ◽  
Important Process ◽  
Steel Company ◽  
Acceptable Accuracy ◽  
Hot Strip ◽  
On Line ◽  
Hot Strip Mills ◽  
And Control ◽  
Width Reduction

Edging of slab is an important process to reduce and control width in the roughing area of hot strip mills. Width reduction amount that is required for edger in every pass is computed in the form of a very complicated on-line computer model. The model which previously was used for computation of width in roughing strip mill of Iran’s Foolad Mobarakeh Company did not have acceptable accuracy and caused many problems in final product width. Obviating these problems and adopting a reasonable and optimal way in allocating the width reduction amount of edger in every pass, the process of width reduction was put under close examination and an off-line computer model was written that precisely computes the width reduction. The performed computations by this model in roughing strip mill of this company were put to use; this was followed by very satisfactory results. Finally, according to the obtained results, the on-line model was corrected. Correction of the aforementioned model has had a significant effect in increase of quality and decrease of damages of hot strip mill products.

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

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

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.

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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