hot rolling work roll :

(PDF) Damage in hot rolling work rolls - ResearchGate

1999-1-11  A.P. 996, 64000 Monterrey, NL, Mexico. ´. Accepted 11 January 1999. Abstract. Samples from a couple of work rolls employed in a hot rolling steel strip mill were examined by scanning electron ...

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WORK ROLL FOR HOT ROLLING - HITACHI LTD,JA

A work roll for hot rolling comprising a body portion composed of a steel having a ferrite structure and having a yield strength at least 40 kg/mm 2, improvement wherein substantially the whole surface of said body portion in the axial direction is provided with a weld metal having a high smoothed surface and having a thickness of 7 to 50 mm, said weld metal consisting essentially of 0.2 to 0 ...

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Steel Rolling Mill Machine: Hot Rolling Roll

2021-4-13  Hot Rolling Roll. The problems of further reducing the roll consumption of hot rolls are discussed from the aspects of reasonable selection of roll materials, speeding up the application of new material rolls, strengthening the management of rolls, popularizing the application of roll surface repair and strengthening technology, improving the cooling conditions of rolls and developing new ...

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ANALYSIS OF SURFACE THERMAL BEHAVIOR OF WORK

2016-4-23  the work roll of a rolling mill. The considered hot rolling mill consists of two hollow cylinders receiving heat in contact with the work piece and cooled by convection on its internal and external surfaces. Hsu et al. [19] considered a three dimensional inverse model for estimate the surface thermal behavior of the work Roll in hot rolling ...

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Study of the work roll cooling in hot rolling process with ...

2016-9-27  Work roll surfaces for hot strip rolling suffer from consi-derable degradation due to high thermal shocks and addi-tional mechanical load. These shocks and loads produce plastic strain and residual stress. This necessarily leads to nucleation of cracks and forced hot strip mill to tem-porary shutdown, replace work roll or even to work roll

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1. Hot rolling and rolling defects: 1.1 Front and back ...

2019-2-4  Hot rolling and rolling defects: 1.1 Front and back tensions: We have seen that the rolling load is dependent on roll diameter, higher the roll dia, higher the ... Rotation of the axis of the work roll with respect to axis of backup roll in horizontal plane – results in

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HOT ROLLING PRACTICE – An Attempted Recollection

2018-4-12  Hot Rolling Technology Rolling is classified according to the temperature of work piece rolled. If the temperature of the metal is above its recrystallization temperature, then the process is termed as hot rolling. For hot working processes, large deformation can be successively repeated, as the metal remains soft and ductile. The

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Online prediction of work roll thermal expansion in a hot ...

2015-11-14  The results were verified against the actual work roll temperature data measured in Mobarakeh Steel Co. as a real model of a hot rolling process. The computation time of this model using a quad-core 2.8-GHz computer was more than 15 s. Due to the long computation time of the accurate analytical model, the online application of this model was ...

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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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Evaluation of Thermal Breakage in Bimetallic Work Roll ...

In the subsequent hot rolling process, severe thermal stresses are caused by heating-cooling thermal cycles at the roll surface. The combination of heat treated residual stresses and thermal stresses will cause a complex stress field in work roll during hot rolling process.

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(PDF) Damage in hot rolling work rolls - ResearchGate

1999-1-11  A.P. 996, 64000 Monterrey, NL, Mexico. ´. Accepted 11 January 1999. Abstract. Samples from a couple of work rolls employed in a hot rolling steel strip mill were examined by scanning electron ...

Read More

Study of the work roll cooling in hot rolling process with ...

2016-9-27  Work roll surfaces for hot strip rolling suffer from consi-derable degradation due to high thermal shocks and addi-tional mechanical load. These shocks and loads produce plastic strain and residual stress. This necessarily leads to nucleation of cracks and forced hot strip mill to tem-porary shutdown, replace work roll or even to work roll

Read More

Steel Rolling Mill Machine: Hot Rolling Roll

2021-4-13  Hot Rolling Roll. The problems of further reducing the roll consumption of hot rolls are discussed from the aspects of reasonable selection of roll materials, speeding up the application of new material rolls, strengthening the management of rolls, popularizing the application of roll surface repair and strengthening technology, improving the cooling conditions of rolls and developing new ...

Read More

China Rolling Mill Work Roll, Rolling Mill Work Roll ...

China Rolling Mill Work Roll manufacturers - Select 2021 high quality Rolling Mill Work Roll products in best price from certified Chinese Two Roll Machine, Work Safety Equipment suppliers, wholesalers and factory on Made-in-China

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ANALYSIS OF SURFACE THERMAL BEHAVIOR OF WORK

2016-4-23  the work roll of a rolling mill. The considered hot rolling mill consists of two hollow cylinders receiving heat in contact with the work piece and cooled by convection on its internal and external surfaces. Hsu et al. [19] considered a three dimensional inverse model for estimate the surface thermal behavior of the work Roll in hot rolling ...

Read More

HOT ROLLING PRACTICE – An Attempted Recollection

2018-4-12  Hot Rolling Technology Rolling is classified according to the temperature of work piece rolled. If the temperature of the metal is above its recrystallization temperature, then the process is termed as hot rolling. For hot working processes, large deformation can be successively repeated, as the metal remains soft and ductile. The

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

Failure analysis of work rolls of a thin hot strip mill ...

2015-4-1  In hot rolling mills, premature failure of rolls is a major concern as it adversely affects the mill operation as well as production. Analysis of failed roll materials and actual rolling conditions in service are therefore necessary to understand the roll failure mechanism and thereby improve the wear resistance and extend the service life of rolls.

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ROLLING - Primetals Technologies

2018-2-21  the effects of width spread in the roll bite as well as creep deformation between the stands. Effective width-deviation compensation using tension control is limited to low-frequency width deviations. By default, the strip width in a hot-strip mill is deter-mined by edging and rolling the strip in

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Thermal Camber and Temperature Evolution on Work Roll ...

Flatness is an important quality characteristic for rolled products. Modern hot rolling mills are equipped with actuators that can modify the uneven thickness distribution across the width of the strip (crown), taking into account online measurements of various process parameters such as temperature, force and exit strip profile, either automatically or manually by the operator.

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China Forged Hot Rolling Mill Work Roll - China Cast Roll ...

stand and blooming stand to perform with excellent strength to avoid some rolling accidents. Meanwhile, it is also a good choice to work on the cold rolling mill as backup roll and work roll.The whole process form melting, casting, forging, heat treatment to final machining and packing is under control of TANGSHAN WEILANG quality system.

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China Forged Steel Rolls For Hot Rolling Mills Work Roll ...

As one of the most professional forged steel rolls for hot rolling mills work roll manufacturers and suppliers in China, LONSUN is featured by high quality steel mills with competitive price. Please rest assured to buy good quality forged steel rolls for hot rolling mills work roll from our factory.

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Study of the work roll cooling in hot rolling process with ...

2016-9-27  Work roll surfaces for hot strip rolling suffer from consi-derable degradation due to high thermal shocks and addi-tional mechanical load. These shocks and loads produce plastic strain and residual stress. This necessarily leads to nucleation of cracks and forced hot strip mill to tem-porary shutdown, replace work roll or even to work roll

Read More

China Rolling Mill Work Roll, Rolling Mill Work Roll ...

China Rolling Mill Work Roll manufacturers - Select 2021 high quality Rolling Mill Work Roll products in best price from certified Chinese Two Roll Machine, Work Safety Equipment suppliers, wholesalers and factory on Made-in-China

Read More

HOT ROLLING PRACTICE – An Attempted Recollection

2018-4-12  Hot Rolling Technology Rolling is classified according to the temperature of work piece rolled. If the temperature of the metal is above its recrystallization temperature, then the process is termed as hot rolling. For hot working processes, large deformation can be successively repeated, as the metal remains soft and ductile. The

Read More

“Frequently Asked Questions about Hot Strip Mill Work

2005-12-22  The roll surface is crucial for work rolls in hot rolling mills. We have to deal with wear, oxidation, firecracks, sticking and friction. This paper starts with temperature simulations on and below the roll surface during rolling and takes common experience into consideration.

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Hot Strip Mill Work Rolls - Union Electric Åkers

A core product of Union Electric Åkers Thousands of Hot Strip Mill Work Rolls come off of our production lines each year, making Union Electric Åkers one of the world’s largest roll manufacturers of Hot Strip Mill Work Rolls. All our Hot Strip Mill Work Rolls are made using the vertical centrifugal casting method, ensuring high in-service integrity and premium performance results.

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ROLLING - Primetals Technologies

2018-2-21  the effects of width spread in the roll bite as well as creep deformation between the stands. Effective width-deviation compensation using tension control is limited to low-frequency width deviations. By default, the strip width in a hot-strip mill is deter-mined by edging and rolling the strip in

Read More

An investigation of worn work roll materials used in the ...

2013-8-16  1 An investigation of worn work roll materials used in the finishing stands of the hot strip mill for steel rolling M. Nilsson1,2*, M. Olsson1,2 1Dalarna University, SE-791 88 Falun, Sweden. 2Uppsala University: Ångström Laboratory, Box 534 SE-751 21, Sweden. Abstract The surface failure characteristics of different work roll materials, i.e. High Speed Steel, High Chromium Iron

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Rolling of Metals: Process and Principles (With Diagram)

2021-11-22  The rolling process is shown in Fig. 2.1: Rolling is done both hot and cold. It is accomplishes in rolling mills. A rolling mill is a complex machine having two or more working rollers, supporting rollers, roll stands, drive motor, reducing gear, flywheel, coupling gear etc. Rollers may be plain or grooved depends upon the shape of rolled product.

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