rolls for a hot mill
The Hot Rolling Process - California Steel
The Hot Mill rolls slabs weighing up to 30 tons between 30" and 74". Steel slab 8 to 9 inches thick and up to 36 feet long is rolled into strip as thin as 1/16 inches and up to a half-mile in length. Coils are produced with a 30"
Rolling Mills | Metal Rolling Mill Machine | Rolling Mill ...
Two-High: Generally, a 2-HI mill is used for hot or cold breakdown and finishing of bar, sheet or strip. A wide range of sizes with separating force capacities from 10,000 lbs. (4.53 MT) to over 3,000,000 lbs. (1360 MT) are available. Three-High: A 3-HI mill is an economic milling solution for the breakdown of rod and ingot. Four-High: A 4-HI mill may be used for finish rolling of thin …
Rolling of steel in Hot Strip Mill – IspatGuru
the primary function of the conventional hot strip mill (hsm) is to reheat the semi-finished steel slabs (rolled or continuously cast) to the rolling temperatures and then to roll them thinner and longer through a series of rolling mill stands driven by large motors and finally coiling up the lengthened steel sheet for its easy handling and …
Roll chocks in Rolling Mill – IspatGuru
The mills roll steel materials of different cross-sections, sizes and qualities and in material conditions which are either hot or cold. The mills have different configurations and speeds of rolling. The configurations of the mills can vary from cross country, reversing, semi continuous to continuous. ...
Technical Article Rolling Mills Revamp
This application is performed on rolls of 2-HI mills, but could be extended to the back-up rolls of 4-HI mills. Figure 5 shows the roll load and current fillet radius detail. Mill design attributes Mill type: 2-HI mill Roll barrel diameter: 990 mm Barrel width: 2180 mm Roll neck diameter: 595 mm Roll neck to barrel ratio: 60 percent
Hot Strip Mill Work Rolls - Union Electric Åkers
Our plants can manufacture almost any size or grade of Hot Strip Mill Work Rolls for all applications ranging from Roughing Mill Work Rolls, including Vertical Edgers, to Finishing Stand Work Rolls. Our products are used in conventional Hot Strip Mills, Thin Slab Compact Strip Mills, and Steckel Mills. Main Roll Grades
Shape Control Technologies in Hot Strip Mill – IspatGuru
TP rolls are used for hot rolling mills whose back-up rolls have a large barrel length. TP rolls can also easily be installed in 2-high rolling mills, in which shape control actuating devices cannot easily be installed because it is not possible to apply the work roll bending. Since TP rolls can be installed as work rolls, the size and ...
rolls for rolling mill - SlideShare
rolls for rolling mill. 1. INTRODUCTION MACHINERY AND METALLURGICAL ROLLS USED IN ROLLING MILL SINOM GROUP CO., LTD. ROLLS BRANCH FACTORY 2016 VERSION. 2. SINOM@SINOMGROUP Machinery and Metallurgical Rolls SINOM GROUP CO., LTD. ABOUT US Rolls branch factory is a specialized manufacturer of rollers …
Rolling mill Rolls and Roll Shop – IspatGuru
These rolls are usually heat treated, the hardness range is 35 -55 deg Shore and they are commonly used as back-up rolls in 4-high rolling mills. An alloy steel containing tungsten (W) and with a hardness of 40 – 50 deg Shore is very resistant to fire cracking and is sometimes used for roughing rolls in hot strip mills.
Forged Steel Rolls & Cast Steel Rolls for Rolling Mills
LPR offers forged steel rolls and cast steel rolls to steel mills, steel processing lines and for machine makers that supply to steel rolling mills. Product range includes forged steel work rolls, tension leveling rolls, bridle rolls, furnace rolls, deflector …
4 High Rolling Mill - Element
Rolling mill consisting of four rolls or known as a 4 High rolling mill is used for reducing material to extremely small thicknesses. Through the use of larger backup rolls, the issues of roll deflection can be avoided and smaller work rolls can be used.
How the Operations of Hot Rolling Mill Works | Deem Rolls
There are two major types of rolling mills, and one is hot rolling mills and second is the cold rolling mills. Let's see how the operation of hot rolling mills works. Knowing the process will allow you to find the right rolling mill rolls manufacturer easily. Steel rolling is the process of reducing the cross-section of large ingots or plates ...
(PDF) Wear of hot rolling mill rolls: an overview
In addition, there are different perceptions of "roll wear" amongst rolling mill operators, designers and roll producers. Roll "performance" is a vague term that may concern: mass or length of hot ...
Hot mill self-centering roll design - Kennecott Corporation
A rolling mill, particularly one capable of forming a hot, continuously cast metallic strand into a strip with a large bite and with one pass per mill stand, uses only two small diameter rolls per stand, each mounted for rotation in a pair of chock blocks and each having a comparatively narrow, enlarged diameter working portion.
CENTRIFUGAL CAST CALIBER ROLL FOR HOT ROLLING MILL (AS ...
A centrifugal cast caliber roll for a hot rolling mill has excellent abrasion resistance, fatigue resistance, and slip resistance. The roll has a chemical composition containing, by mass %, C: 1.8% or more and 3.0% or less, Si: 0.2% or more and 1.0% or less, Mn: 0.2% or more and 1.5% or less, Cr: 5% or more and 9% or less, Mo: 4.0% or more and 7.0% or less, V: 4.0% or more …
Rolling Mill Rolls | Xtek, Inc.
The Xtek Pinch Roll is known for its "pickup free" performance and is in use in hot mills worldwide. Forged Cold Mill Rolls Pinch Rolls Edger Rolls Leveler Rolls Specialty Rolls Roll Repair For hot strip mill Edger applications, Xtek developed another special steel grade with superior resistance to the thermal fatigue and firecracking so ...
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 …
3B(2) Deformation of Rolling Mill
The mill modulus is 500-1,000 ton/mm for plate rolling mills and 400-600 ton/mm for cold rolling mills. The larger the diameter of the back-up rolls, the higher the mill modulus. A rolling force of the order of 1,000 tons is generated during rolling, so …
China Roll for Hot Strip and Plate Mill Manufacturers ...
The forged steel rolls for hot mills are manufactured by forged steel blanks with special heat treatment is applied to make rolls in satisfactory barrel hardness and hardening depth. The forged rolls for hot mills have good wear-ability, high toughness and excellent biting...
Mill Roll for HSM,Cast Roll for hot mill, Forged Roll for ...
Hot Rolling Mill Rolls. Hot Rolling Mill Rolls Product Description It is for the iron and steel industry and nonferrous metal industies for the purpose of specializing in cast iron. Main products are alloy cast steel rolls, adamite rolls, graphite steel rolls, alloy indefinite cast iron rolls, alloy nodular cast iron...
What Is A Rolling Mill? | Metal Processing Machinery ...
What Is A Rolling Mill? In metalworking, rolling is a metal forming process in which metal stock is passed through one or more pairs of rolls to reduce the thickness and to make the thickness uniform. The concept is similar to the rolling of dough. Rolling is classified according to the temperature of the metal rolled.
Rolling mill Rolls and Roll Shop – IspatGuru
Types of rolls used in various hot rolling mills. The types of rolls used in blooming and slabbing mill, billet and merchant bar mill, section mills, plate mill, and hot strip mill are given in Tab 2, Tab 3, Tab 4, tab 5 and tab 6 respectively. The selection of any particular roll depends on production demands, initial cost, specific qualities ...
GENERAL ASPECTS OF ROLL COOLING FOR HOT & COLD …
rolling mill, dedicated roll cooling systems are required to fulfill the required functions. Examples are suitable roll cooling and lubricationsystems to fully utilize the advantages of HSS rolls in hot strip mills, and selective roll cooling systems as a method to control the flatness of the strip in cold rolling mills.
1. Hot rolling and rolling defects: 1.1 Front and back ...
the rolls get deflected by high rolling forces. Elastic deformation of the mill takes place. If we use stiffer rolls, namely roll material of high stiffness or elastic constant, we could avoid mill spring. Normally elastic constant for mills may range from 1 to 4 GNm-1. Roll elastic deformation may result in uneven sheet thickness across.
Computer Simulation of the Cooling System for Rollers of ...
We consider the operation of an existing cooling system for the rolls of a 1950 wide-strip hot-rolling mill aimed at the production of thin-sheet strips. On the basis of the results of computer simulation of this cooling system, we propose a new scheme for the supply of coolants. This system enables one to reduce thermal stresses on the surfaces of rollers, to …
Aluminum Mill Rolls - Union Electric Åkers
From hot to cold - covering a wide variety of needs Union Electric Åkers supplies rolls to some of the world's leading aluminum mills. We were the first roll manufacturer to introduce the 5% Cr and 10% Cr semi HSS grade with considerably improved performance for the hot mill process. Additionally, having our own ESR installation gives us the ability to have full control over the …
ANALYSIS OF SURFACE THERMAL BEHAVIOR OF WORK …
merchant mill. When the maintenance takes place, equipment will be down, availability will be reduced and the production capacity will be impacted. 2. LITERATURE REVIEW 2.1 Work Roll Analysis Martha et al. [26] proposed a heat transfer model for hot rolling work rolls. Three models have been implemented to determine the transient heat flow.
METHOD FOR THE PRODUCTION OR RESTORATION OF WORKING ROLLS …
The invention relates to a method for the production or restoration of working rolls for hot rolling metallic flat products, in particular for shaping steel slabs to pre-strips on broad strip mills, wherein the improvement resides in that the central circumferential zone of the roll body is provided with a greater coarseness than the two marginal zones.