how to reverse the rougher in a hot strip mill:

New Rolling Method R f Reversing Cold Rolling Mill

Key words: Zoom-MillTM, Off-gauge, Minimization, Yield, Productivity, Leader strip, Spot welding INTRODUCTION For production of cold rolling steel strips in the size of yearly production capacity ranged from 150 to 300 thousands tons, a reversing cold rolling mill, which takes relatively inexpensive capital investment, is put into use.

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MODERNIZATION OF HOT STRIP MILLS - SMSgroup

Dunkirk hot strip mill. This modernization measure ensures the operational reliability of the drive train, prepares the mill for a future extension and reduces mill maintenance. The rougher R5 is the last of four non-reversing stands in the five-stand roughing mill of ArcelorMittal’s hot strip mill in Dunkirk, France.

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Rolling conditions in hot strip mills and their influence ...

in hot strip mills, slabs of 1 50 to 250 mm thick are rolled to strip 1.5 to 12 mm thick. Conventional hot strip mills consist of roughing and finishing stands. The configuration of the roughing mills varies widely. A mill with one reversing stand is called a semi-continuous mill. A mill with one reversing stand

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continuous hot steel strip rolling reversing mill sheet ...

East China MetalContinuous hot steel strip rollingTechnology and machineryTurnkey Supplier

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Examination of Slab Temperature Change, Rolling Power and ...

A mathematical model is proposed for the mill arrangement equivalent to semi continuous type in a hot strip mill. The rolling schedule is arranged so that a slab is rolled from 230 mm into 60 mm in bar thickness by 3 passes roughing with only one reverse mill and 60

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Width necking at the rougher in a hot-strip mill

In the top or tail portion of a hot strip, a local contraction of width unavoidably occurs, called “width necking” or simply “necking”. The amount of necking is determined mainly by the conditions of rougher rolling in the hot-strip mill. In this paper, the mechanism of necking, the influence of rolling conditions on the amount of ...

Read More

MODERNIZATION OF HOT STRIP MILLS - SMSgroup

Dunkirk hot strip mill. This modernization measure ensures the operational reliability of the drive train, prepares the mill for a future extension and reduces mill maintenance. The rougher R5 is the last of four non-reversing stands in the five-stand roughing mill of ArcelorMittal’s hot strip mill in Dunkirk, France.

Read More

Examination of Slab Temperature Change, Rolling Power and ...

A mathematical model is proposed for the mill arrangement equivalent to semi continuous type in a hot strip mill. The rolling schedule is arranged so that a slab is rolled from 230 mm into 60 mm in bar thickness by 3 passes roughing with only one reverse mill and 60

Read More

Width necking at the rougher in a hot-strip mill

Apr 01, 1983  In the top or tail portion of a hot strip, a local contraction of width unavoidably occurs, called “width necking” or simply “necking”. The amount of necking is determined mainly by the conditions of rougher rolling in the hot-strip mill. In this paper, the mechanism of necking, the influence of rolling conditions on the amount of ...

Read More

The Hot Rolling Process - California Steel

The Hot Rolling Process The primary function of the Hot Strip Mill is to reheat semi-finished steel slabs of steel nearly to their melting point, then roll them thinner and longer through 12 successive rolling mill stands driven by motors totaling 77,000 hp, and finally coiling up the lengthened steel sheet for transport to the next process.

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Width necking at the rougher in a hot-strip mill ...

Abstract The accuracy of the width of a hot strip is very important for the improvement of yield, both for the steel maker and the steel user. One of the important technical problems concerning width accuracy is securing a final hot strip with uniform width along the whole length. In the top or tail portion of a hot strip, a local contraction of width unavoidably occurs, called “width ...

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How does it work: hot-strip rolling mill - YouTube

Mar 31, 2015  ThyssenKrupp Steel Europe spent a quarter of a million euros on renovating its hot-strip rolling mill in Duisburg. The animation shows how it all works.

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Roughing Mill - an overview ScienceDirect Topics

John G. Lenard, in Primer on Flat Rolling (Second Edition), 2014 2.7 Generation III – Coil Box Hot Strip Mills. In the 1970s, Stelco of Canada developed the hot coil box designed for installation in hot strip mills ahead of the finish mill for coiling the transfer bar from the roughing mill and uncoiling it into the finishing mill. The coil box reduced the distance between the roughing mill ...

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A BASIC UNDERSTANDING OF THE MECHANICS OF

Secondary scale on hot strip and the impact on wear is another issue. Stresses from Hertzian pressure in 4-high cold mill back up rolls were measured years ago, the results were never published, but of high interest - also, maybe later. K. H. Schröder July 2003 K. H. Schröder: A BASIC UNDERSTANDING OF THE MECHANICS OF ROLLING MILL ROLLS

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Automation and Control in Iron and Steel Industries

In a strip production line, the first step after flame descaling is to reheat the slab in a pusher-type or walking-beam reheating furnace. The slab with a thickness of about 250 to 300 mm is then rolled in a hot strip mill (consisting of 1–4 rougher type stands and a

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Automated method and apparatus for polishing hot strip ...

The projected cost for a new, state-of-the-art hot strip mill is between 500 million and one billion dollars. It can take five to seven years to complete the construction of a new mill. In view of these costs, there are presently no known plans to build a new hot strip mill anywhere in the world.

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Hot strip mill - ArcelorMittal in Belgium

Hot strip mill. Around a third of the products we send out to our customers, are hot rolled. In the hot strip mill (Ghent), slabs coming from the continuous caster are rolled out to steel plates with a thickness of around 1.25 to 13mm. How does this work? First, the slabs coming from the continuous caster are pre-sorted in the slab yard.

Read More

Hot strip mill mathematical models and set-up calculation ...

This setup calculation was applied to a New Zealand hot strip mill, which consists of a reversing rougher and a four-stand finishing mill. With this configuration, strip was successfully rolled with a finished thickness of 2 mm and a width of 1250 mm. >

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steel - Hot strip Britannica

For example, a semi-continuous hot-strip mill has only one reversing rougher in front of the finishing train. Another rolling system goes even farther and uses one four-high reversing rougher and one four-high reversing finishing mill, with hot-coiling boxes in front and in back of the finishing mill. (Hot coilers operate in a furnace to keep ...

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Stelco Hot Roll Product Overview

Hot Rolling Technology Stelco’s Lake Erie hot strip mill utilizes three slab reheating furnaces, a vertical edger reversing rougher, a Coilbox, a six-stand finishing train, an advanced run-out table cooling system and two down coilers. These hot rolling technologies, coupled with Stelco’s strict composition

Read More

Width necking at the rougher in a hot-strip mill

Apr 01, 1983  In the top or tail portion of a hot strip, a local contraction of width unavoidably occurs, called “width necking” or simply “necking”. The amount of necking is determined mainly by the conditions of rougher rolling in the hot-strip mill. In this paper, the mechanism of necking, the influence of rolling conditions on the amount of ...

Read More

Examination of Slab Temperature Change, Rolling Power and ...

A mathematical model is proposed for the mill arrangement equivalent to semi continuous type in a hot strip mill. The rolling schedule is arranged so that a slab is rolled from 230 mm into 60 mm in bar thickness by 3 passes roughing with only one reverse mill and 60 mm into 1.2 mm, 2.0 mm,

Read More

MODERNIZATION OF HOT STRIP MILLS - SMSgroup

Dunkirk hot strip mill. This modernization measure ensures the operational reliability of the drive train, prepares the mill for a future extension and reduces mill maintenance. The rougher R5 is the last of four non-reversing stands in the five-stand roughing mill of ArcelorMittal’s hot strip mill in Dunkirk, France.

Read More

Width necking at the rougher in a hot-strip mill ...

Abstract The accuracy of the width of a hot strip is very important for the improvement of yield, both for the steel maker and the steel user. One of the important technical problems concerning width accuracy is securing a final hot strip with uniform width along the whole length. In the top or tail portion of a hot strip, a local contraction of width unavoidably occurs, called “width ...

Read More

The Hot Rolling Process - California Steel

The Hot Rolling Process The primary function of the Hot Strip Mill is to reheat semi-finished steel slabs of steel nearly to their melting point, then roll them thinner and longer through 12 successive rolling mill stands driven by motors totaling 77,000 hp, and finally coiling up the lengthened steel sheet for transport to the next process.

Read More

MODELLING OF WIDTH CONTROL FOR HOT STRIP MILL

continuous slab caster feeding a hot strip mill is limited. This has increased the requirement for width reduction in the hot strip mill rolling stands. The width of a slab can be reduced using vertical edger rolling stands in the roughing mill section and by using a slab sizing press.

Read More

Roughing Mill - an overview ScienceDirect Topics

John G. Lenard, in Primer on Flat Rolling (Second Edition), 2014 2.7 Generation III – Coil Box Hot Strip Mills. In the 1970s, Stelco of Canada developed the hot coil box designed for installation in hot strip mills ahead of the finish mill for coiling the transfer bar from the roughing mill and uncoiling it into the finishing mill. The coil box reduced the distance between the roughing mill ...

Read More

How does it work: hot-strip rolling mill - YouTube

Mar 31, 2015  ThyssenKrupp Steel Europe spent a quarter of a million euros on renovating its hot-strip rolling mill in Duisburg. The animation shows how it all works.

Read More

Automated method and apparatus for polishing hot strip ...

The projected cost for a new, state-of-the-art hot strip mill is between 500 million and one billion dollars. It can take five to seven years to complete the construction of a new mill. In view of these costs, there are presently no known plans to build a new hot strip mill anywhere in the world.

Read More

A BASIC UNDERSTANDING OF THE MECHANICS OF

Secondary scale on hot strip and the impact on wear is another issue. Stresses from Hertzian pressure in 4-high cold mill back up rolls were measured years ago, the results were never published, but of high interest - also, maybe later. K. H. Schröder July 2003 K. H. Schröder: A BASIC UNDERSTANDING OF THE MECHANICS OF ROLLING MILL ROLLS

Read More

Hot strip mill mathematical models and set-up calculation ...

This setup calculation was applied to a New Zealand hot strip mill, which consists of a reversing rougher and a four-stand finishing mill. With this configuration, strip was successfully rolled with a finished thickness of 2 mm and a width of 1250 mm. >

Read More

Stelco Hot Roll Product Overview

Hot Rolling Technology Stelco’s Lake Erie hot strip mill utilizes three slab reheating furnaces, a vertical edger reversing rougher, a Coilbox, a six-stand finishing train, an advanced run-out table cooling system and two down coilers. These hot rolling technologies, coupled with Stelco’s strict composition

Read More

Hot strip mill - ArcelorMittal in Belgium

Hot strip mill. Around a third of the products we send out to our customers, are hot rolled. In the hot strip mill (Ghent), slabs coming from the continuous caster are rolled out to steel plates with a thickness of around 1.25 to 13mm. How does this work? First, the slabs coming from the continuous caster are pre-sorted in the slab yard.

Read More

Feedback Control for Hook Camber Strip Mill

Hot strip mill no. 1 of thyssenkrupp Steel Europe consists of 2 roughers, the first is called R1, the second one called Z3. ... While the first rougher is considered to perform several reversing ...

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