hot strip journals
Hot Strip Mill - an overview | ScienceDirect Topics
G. Engberg, L. Karlsson, in Fundamentals of Metallurgy, 2005 11.5.1 Hot rolling. Mill data from the hot strip mill has been used to calculate the mean flow stress in each pass, assuming the material to be elastic – ideally plastic. The roll force model used was a classical slab method with constant friction assumed in the roll gap. For the roughing mill (reversible 4-high) both roll force ...
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Hot strip flatness optimization by means of edge masking ...
2006-9-29 · The control of temperature distribution across the strip is essential for the hot strip flatness improvement. Hot strips of Arcelor in Avilès may display wavy edge defects that are generated after the finisher and are attributed to residual stresses introduced by the accelerated cooling on the run-out-table.
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The Hot Strip Mill Looper System - IEEE Journals & Magazine
In the modern hot strip mill, the loopers establish a low and relatively constant level of tension between stands. This aids in minimizing width deviation, and provides an isolated environment for the operation of automatic gage control equipment at each stand. The looper also serves to keep all stands of a mill in synchronism during speedup and slowdown when metal is in the mill. The ...
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IET Digital Library: Hot strip mill multivariable mass ...
Hot strip mills are processes with a very high throughput of products. They are highly developed capital intensive and competitive businesses where control systems are essential to maintain product quality and production efficiency. Even small improvements in the accuracy of the product and mill availability yield significant savings for the steel producer.
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Robust Steering Control of Hot Strip Mill | IEEE Journals ...
2009-11-10 · In this paper, a robust steering control is proposed as a means to guarantee the stability of a hot strip finishing mill and improve its performances. The aim of the rolling process is to obtain a metal strip which is uniform and at the desired thickness. The lateral movement of the strip may reduce the quality of the product and damage the rolls. Hence, this displacement
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Hot-Rolled Steel Strip Surface Inspection Based on ...
2021-10-26 · defects of hot-rolled strips, we compared a convolutional neural network with a transfer learning model. The training timeofthetransferlearningmodel[16]isshorter,itsconver-gence speed is faster, the weight parameters are more accu-rate, and the accuracy of its detection of the surface defects of strip steel is also higher. 2.
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Advances in Mechanical Engineering ... -
2015-7-1 · The purpose of this study is to predict the front-end curvature in hot strip finishing mills and to prevent it by controlling the rolling conditions. A theoretical model based on the slab method is developed for predicting the front-end curvature by taking into account the entrance angle of the strip, the friction condition and the back tension.
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Surface Defects and their Control in Hot Dip Galvanized ...
2018-12-27 · hot dip galvanizing operation entails joining, cleaning, annealing and cooling of cold-rolled steel strip to 455-460 oC before hot dipping in molten zinc (Zn) bath at 455-460 oC followed by post-treatment processes involving air wiping, chromate passivation, temper-rolling and, finally, coiling. The quality
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Research on vertical vibration of hot ... - JVE Journals
In this paper, we find the violent vibration of the hot rolling mill is induced by the combination of the screw-down system and the strip, explain how the srew-down-strip combined excitation effects the rolling mill, and introduce an effective method to restrain the vibration. First, two experiments, stripless rolling and turning off the screw-down system, are conducted, the first experiment ...
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DEFECTS SIMULATION OF ROLLING STRIP
2012-7-25 · - hot slabs rolling, - cold strip rolling. Between the most problematic surface defects, if you like initiators of surface defects, which are created during process of manufacturing and steel casting include: inclusions, blowholes, scars, lines of oxides aluminium, holes, longi- tudinal, transverse and the edge cracks [1-4]. ...
Read More
Hot strip flatness optimization by means of edge masking ...
2006-9-29 · The control of temperature distribution across the strip is essential for the hot strip flatness improvement. Hot strips of Arcelor in Avilès may display wavy edge defects that are generated after the finisher and are attributed to residual stresses introduced by the accelerated cooling on the run-out-table.
Read More
Advanced measurement and flatness control for hot strip ...
2002-10-25 · > Journals > Metallurgical Research & Technology ... that offer advantages over conventional techniques and lead to significant improvements in hot rolling processes and strip shape. The present article aims to demonstrate the principles and advantages of these technologies. ...
Read More
Robust Steering Control of Hot Strip Mill | IEEE Journals ...
2009-11-10 · In this paper, a robust steering control is proposed as a means to guarantee the stability of a hot strip finishing mill and improve its performances. The aim of the rolling process is to obtain a metal strip which is uniform and at the desired thickness. The lateral movement of the strip may reduce the quality of the product and damage the rolls. Hence, this displacement
Read More
The Hot Strip Mill Looper System - IEEE Journals & Magazine
In the modern hot strip mill, the loopers establish a low and relatively constant level of tension between stands. This aids in minimizing width deviation, and provides an isolated environment for the operation of automatic gage control equipment at each stand. The looper also serves to keep all stands of a mill in synchronism during speedup and slowdown when metal is in the mill. The ...
Read More
28 Journal of Material Science and Technology Research ...
between the microstructure of the hot strip and the cold Deformation Microstructure and Textures after Cold Rolling Journal of Material Science and Technology Research, 2018, Vol. 5 29
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Microstructural model for hot strip rolling of high ...
The microstructural evolution during hot-strip rolling has been investigated in four commercial high-strength low-alloy (HSLA) steels and compared to that of a plain, low-carbon steel. The recrystallization rates decrease as the Nb microalloying
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Analysis of rate dependency on roll ... -
2019-1-23 · Deformation resistance stress generated during strip rolling has a direct impact on rolling pressure and roll force. Roll force is a key parameter in the process control of hot strip rolling, and its computational accuracy directly determines thickness precision, strip shape quality, and rolling stability. 1,2 Therefore, getting a more accurate roll force has received substantial
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Advances in Mechanical Engineering ... -
2015-7-1 · The purpose of this study is to predict the front-end curvature in hot strip finishing mills and to prevent it by controlling the rolling conditions. A theoretical model based on the slab method is developed for predicting the front-end curvature by taking into account the entrance angle of the strip, the friction condition and the back tension.
Read More
Research on vertical vibration of hot ... - JVE Journals
In this paper, we find the violent vibration of the hot rolling mill is induced by the combination of the screw-down system and the strip, explain how the srew-down-strip combined excitation effects the rolling mill, and introduce an effective method to restrain the vibration. First, two experiments, stripless rolling and turning off the screw-down system, are conducted, the first experiment ...
Read More
Surface Defects and their Control in Hot Dip Galvanized ...
2018-12-27 · hot dip galvanizing operation entails joining, cleaning, annealing and cooling of cold-rolled steel strip to 455-460 oC before hot dipping in molten zinc (Zn) bath at 455-460 oC followed by post-treatment processes involving air wiping, chromate passivation, temper-rolling and, finally, coiling. The quality
Read More
Advanced measurement and flatness control for hot strip ...
2002-10-25 · > Journals > Metallurgical Research & Technology ... that offer advantages over conventional techniques and lead to significant improvements in hot rolling processes and strip shape. The present article aims to demonstrate the principles and advantages of these technologies. ...
Read More
Microstructural model for hot strip rolling of
The microstructural evolution during hot-strip rolling has been investigated in four commercial high-strength low-alloy (HSLA) steels and compared to that of a plain, low-carbon steel. The recrystallization rates decrease as the Nb microalloying
Read More
IET Digital Library: Hot strip mill multivariable mass ...
Hot strip mills are processes with a very high throughput of products. They are highly developed capital intensive and competitive businesses where control systems are essential to maintain product quality and production efficiency. Even small improvements in the accuracy of the product and mill availability yield significant savings for the steel producer.
Read More
28 Journal of Material Science and Technology Research ...
between the microstructure of the hot strip and the cold Deformation Microstructure and Textures after Cold Rolling Journal of Material Science and Technology Research, 2018, Vol. 5 29
Read More
Industrial application of HCX-MILL to hot strip mills ...
1996-6-1 · @misc{etde_401476, title = {Industrial application of HCX-MILL to hot strip mills; Netsukan`yo HCX-MILL no jikki tokusei} author = {Ono, H, Watanabe, T, Yoshimoto, K, and Kaga, S} abstractNote = {Hot-rolled steel is increasingly becoming harder and thinner. As a result, the first stand of a finishing mill is required to have expanded control capacity for fabrication of
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The simulations of camber in hot strip rolling--《Journal ...
An finite element model was established for the rough rolling process based on finite element software ABAQUS from the point of view of the rolling deformation.The model was used to simulate the rolling process of hot strip rolling mill in a domestic steel plant.The result shows that,the wedge of slab directly causes the uneven longitudinal extension of the strip steel and
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Advances in Mechanical Engineering ... -
2015-7-1 · The purpose of this study is to predict the front-end curvature in hot strip finishing mills and to prevent it by controlling the rolling conditions. A theoretical model based on the slab method is developed for predicting the front-end curvature by taking into account the entrance angle of the strip, the friction condition and the back tension.
Read More
Research on vertical vibration of hot ... - JVE Journals
In this paper, we find the violent vibration of the hot rolling mill is induced by the combination of the screw-down system and the strip, explain how the srew-down-strip combined excitation effects the rolling mill, and introduce an effective method to restrain the vibration. First, two experiments, stripless rolling and turning off the screw-down system, are conducted, the first experiment ...
Read More
DEFECTS SIMULATION OF ROLLING STRIP
2012-7-25 · - hot slabs rolling, - cold strip rolling. Between the most problematic surface defects, if you like initiators of surface defects, which are created during process of manufacturing and steel casting include: inclusions, blowholes, scars, lines of oxides aluminium, holes, longi- tudinal, transverse and the edge cracks [1-4]. ...
Read More
Une miss météo sexy fait un strip-tease en direct (vidéo)
Une miss météo sexy fait un strip-tease en direct (vidéo) par Non Stop Zapping. info. Once Flores, une Miss météo très sexy venue du Honduras, avait réservé une belle surprise à ses ...
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