roughing mill rolls

Influence of roll speed mismatch on strip curvature during the roughing …

A typical reduction schedule for a roughing mill is also given. Download : Download high-res image (36KB) Download : Download full-size image; Fig. 2. Undeformed mesh. Table 1. ... This would have a direct significance to rolling mills, where roll lubrication is utilised on later passes (usually pass 5) to reduce the mill load through a ...

How to optimize the roughing rolling mill roll to prevent …

The roughing mill work rolls of many hot rolling mills in the world are faced with the problem of contact fatigue in the bonding and bonding zone before reaching the scrap diameter. This phenomenon is caused by factors such as rolling steel with high resistance to deformation, long rolling cycle, increased reduction in order to increase the ...

Hot rolling mills for aluminum

On the 1+4 hot rolling line strips of all kinds of aluminum and aluminum alloys with best surface quality, excellent thickness profile and flatness tolerances and perfect final rolling temperature. Layout of semi-continuous aluminum mill. Let's get in touch! Use our contact form for questions, inquiries or personal contact.

How to optimize the roughing rolling mill roll to …

The roughing mill work rolls of many hot rolling mills in the world are faced with the problem of contact fatigue in the bonding and bonding zone before reaching the scrap diameter. This phenomenon is caused by …

Principles of Hot Rolling

THICKNESS REDUCTION: Roughing mill reduces slab thickness in five (5) to seven (7) reversing passes down to 1.125" (transfer bar). DESCALING: High pressure descale …

Analysis of Spalling in Roughing Mill Backup Rolls of …

2. Backup Roll Spalling. The 1580mm hot strip mill (HSM) is one of the largest production lines for wide and thin electrical steel in the world, consisting of a 2-high roughing mill R1, a 4-high ...

Difference Between a 2 Hi Rolling Mill and a 4 Hi Rolling Mill

The specific choice is to be selected according to the requirements of the customer, and it is also determined according to the actual use. Difference Between a 2 Hi Rolling Mill and a 4 Hi Rolling Mill. In the 2 hi rolling mills, the entire roll diameter is relatively large, and the area of contact with the tie pieces is also very large, so ...

Optimal control of plate motion and camber in a reversing rolling mill

A roughing mill is The financial support by the Christian Doppler Research Associa- tion, the Austrian Federal Ministry for Digital and Economic Affairs, the National Foundation for Research, Technology and Development, and voestalpine Stahl is gratefully acknowledged. electromechanical actuation edger roll plate work roll Fig. 1.

A Cutting-Edge Technology for Hot Strip Mills

an overview on the X-Roll Guide system for hot roll-ing mills. Roughing Mill Wedge and Camber Control — The roughing mill has the task to transform the incoming slab into transfer bar with typical quality parameters of: • Uniform thickness <1.5%. • Wedge in cross-profile <0.5%. • Camber (straightness) <50 mm.

Finishing Rolling Mill Process Explanation

After all this processing of the rolling mill through the finishing mill machine, the steel has been rolled into a flat bar nearly 200 feet. However, in contrast to the roughing mills, the way of the finishing mills roll the transfer bar in tandem, meaning each bar would be rolled through all six stands at once.

High Speed Steel Rolls | HSS Roll

High-speed tool steel (HSS) rolls were devoloped to meet the demand. Usage of HSS rolls to hot strip mill roughing stands, structural mill universal rolling stands, and bar and wire rod mill intermediate stands. The HSS rolls are now manufactured by the CPC process, centrifugal casting (CF) process, or hot isolating pressing (HIP) process to ...

Current developments of alloyed steels for hot strip roughing mills …

of roughing mill work roll grades, a short descr iption of . the different layouts found w orldwide wil l be he lpful for . the reader (F igure 10). Many different kinds of roughing mills have been .

Hot Strip Mill

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 and roll torque were available so the friction coefficient could be evaluated in addition to the flow stress for each pass. The values were close to 0.3 so it was decided to use this for ...

Rolls – Gontermann Peipers

Gontermann-Peipers is a well-known name in the international steel and aluminum industries. GP is synonymous with a wide range of wear-resistant and high-performance rolls of excellent durability, manufactured with the highest precision. Particular highlights of GP's product range include work rolls in HSS and semi-HSS grades and double ...

Rolling Mills: 6 Different Types of Rolling Mills …

Types of Rolling Mills. Following are the 6 different types of rolling mills used in many industries: Two high rolling mills; Three high rolling mills; Four high rolling mills; Cluster rolling mills; Planetary …

Mill Rolls

Block Mill Rolls. Quality of the wire or rod is decided by these rolls. These rolls demand very high resistance to wear and thermal fatigue. Performances of the rolls are determined in terms of tonnage rolled per pass. Kennametal grades between 12% and 20% binders are preferred. Selection of binder depends on the water quality and discharge.

Mill Rolls | WHEMCO

The WHEMCO companies in Pennsylvania and Ohio, USA manufacture a full range of mill rolls – spun cast iron, cast steel and forged steel. ... Roughing Mill Work Rolls; Synergy 500 & 700; FORGED STEEL WORK ROLLS. 3 - 5 Cr Alloy Forged Steel; 15.7 – 31.4 inches diameter;

Roughing Mill

Roughing mill: Precise control of roll gaps enables better stock control in each pass and avoids excess loading on mill rolls and drive systems owing to improper roll gaps. …

Roughing Stand Rolls at Best Price in India

Finishing Stand Rolls. Ask Price. Roughing Stand Rolls. We manufactures Roughing Mill Rollers from diameter 300mm to 600mm and length from 600mm to 1200mm. The hardness of these Rollersranging …

Are edger rolls useful to control the plate motion and …

In [1], a mathematical model of the lateral plate motion in a roughing mill is proposed and used to analyze how the plate motion can be influenced by exerting lateral forces with edger rolls.It is further investigated how forces on the entry or exit side of the roll gap influence the stability of the plate motion. A review of models for the evolution of …

ROLLS

The Reinosa steel plant specializes in: Forged Rolls for Roughing Stands for Long Product Mills: Refined by advanced melt shop processes and forged in the most modern liquid hydraulic presses, these rolls result in …

Finite element analysis of strip and rolling mills

2.1 Backup roll spalling of 2250 roughing mill 3 spalling accidents occurred continuously in this roughing mill within a month of 2250 HSM on March 8, April 4 and April 8, 2008, e.g., the ...

Selection of Rolling Mill Rolls in Long Products Rolling Mill

Nodular cast iron roll: in a continuous bar rolling mill, nodular cast iron roll is used for roughing mill stand and finishing mill stand. For roughing stands, molybdenum alloyed, annealed pearlitic cast iron rolls are used. The roll hardness value depends on the actual production conditions of the mill. If the burning crack resistance is ...

Typical spalled backup roll surface. | Download Scientific …

The roughing mill withstood extreme service conditions with long service cycles for backup and work rolls, a large variety of the same width rolling campaigns, severe and non-uniform wear contours ...

RECENT TRENDS IN HOT STRIP ROUGHING MILLS: …

Abstract. Two alloys grades for work rolls used in the roughing stand of Hot Strip Mill (HSM) are compared. The first grade known as High Chromium Steel (HCS) is presently the most widely used alloy for such an application, while the second one known as semi-High Speed Steel (semi-HSS) is the new grade developed to improve the overall ...

Rolling of steel in Hot Strip Mill – IspatGuru

The roughing mill also contains edger rolls which are used to roll the edge of slab and center it. The hot strip mill can be either a high performance mill or a compact mill. The difference in the two mill types is the coil box which, in compact hot mills, is installed between the roughing and the finishing mill. ...

Hot Strip Mill Work Rolls

11 rowsFor roughing mill work rolls, we can also offer the forged grade SDSII with proven excellent performances. Hot Strip Mill Work Rolls account for a substantial part …

(PDF) New Trends in Hot Strip Mill Roughing Mills

F. Martiny, "The Roughing Work Roll for Hot Strip Mills," Proceedings of Rolls 2000 + Conference, Birmingham, March 1999, pp. 269-280. La Microstructure des Aciers et des Fontes – Genèse et ...

3 High Rolling Mill – Element Machinery

Rolling mill consisting of three rolls or known as 3 High rolling mill is typically used for performing multiple reduction passes by wrapping material around the center mill roll and performing another reduction on the opposite mill roll pair. 3 High mill can also be used with varying mill roll sizes to induce a specific percentage of reduction of material on a …

What Is Roughing Stand Rolling Mill?

The roll gap, which is the distance between the rolls, is set to achieve the desired reduction in thickness. Drive System of Roughing Stand Rolling Mill. Due to the high rolling forces in the roughing stand, powerful drive …