applied in the rolls of the finishing mills to maintain the required crown and flatness in the strip produced. In a fourhigh hot strip mill, the finishing mill of the hot strip mill is equipped with two workrolls and two backup rolls and is shown in Fig. 2. During the passage of the strip between the two
Dec 22, 2013 · Main Features of a modern Hot Strip Mill. The objective of a hot strip mill (HSM) is to reheat and roll thick slabs into thin strip with a wide range of thickness. Because of its huge size and large investment a hot strip mill need to have a life time of several decades.
Rolling conditions in hot strip mills and their influence on the rolling conditions of all passes in roughing and finishing mills.These variables should Seminar on Rolling Mill Rolls, lnstituto Latinoamericano del Fierro v.Acero. . especially in F2 bottom roll: scale rolled in the strip, bruises in the very last
China Strip Rolls for Rolling Mill, Find details about China Mill Roll, Rolling Mill from Strip Rolls for Rolling Mill Tangshan Weilang Trading Co., Ltd.
Analysis of roll stack deflection in a hot strip mill Article (PDF Available) in Journal of the Brazilian Society of Mechanical Sciences and Engineering 29(3) · July 2007 with 355 Reads
"Frequently Asked Questions about Hot Strip Mill Work Roll Surface" (wear, oxidation, firecracks, sticking and fiction) This was originally presented at the WMSP, New Orleans, 2004. In the gap between work and back up roll, the back up roll" irons" the oxides onto the work roll surface to a smooth surface finish.
hot strip mill at Bokaro Steel Plant uses Indefinite Chill Double Poured (ICDP) work rolls with alloy cast iron shell and iron core in finishing stands and HiCr work rolls in few intermediate stands. Back up rolls made of forged high carbon alloy steel (0.9 %C1.5 CrV) were
reduction in roll force indiing that the appliion of pure oil is 50% more efficient than when using an emulsion. A second series of trials were carried out on the pilot mill to investigate the impact on lubriion efficiency when using different types of oil. The classic oils for the finishing hot strip
the finishing train in a hot strip mill. Genetic algorithms proved unsuited to this optimisation problem, despite by rolling between two driven work rolls in a mill stand (Figure 1). To a
Mar 31, 2015 · ThyssenKrupp Steel Europe spent a quarter of a million euros on renovating its hotstrip rolling mill in Duisburg. The animation shows how it all works.
mill. The width deviation after the finishing mill arises from the width deviation in front of the finishing mill and from widthspread anomaly occurring inside the finishing mill. The behavior of width spread in a finishing mill depends on effects in roll bite and on the creep deformation between the stands, whereby the width spread
bruise on hotstrip mill finishing mill rolls las10mas . Home Portfolio Hot Rolling Flat Hot Strip Mill .mill and finishing mill to coil the transfer . ROLL SPEED SETUP IN HOT STRIP FINISHING ROLLING MILL Hot strip finishing mill is initially set up with rolling conditions such as roll speed, roll gap, and cooling pattern obtained by a set.
Vertical Mill 2HI Rough Mill 4HI Rough Mill 7 Stand 4HI Finishing Mill 1. Hot Strip Continuous Mills, CSP. Vertical Roll: Rough Mill WR: 7 Stand 4HI Finish Mill WR: 2HI Rough Mill : 4HI Rough Mill: Front 4．Rolls for Narrow Hot Strip Mills. Rough Mill WR: Medium Mill WR: Finish Mill WR: Back up Roll: Vertical Roll: AS GS AD SGP: SGP
TMEIC Supplies Superior Control Systems for Hot Rolling Mills Hot rolling mills roll heated steel, stainless, and aluminum slabs to make hot strip with a thickness of a few millimeters to over ten millimeters. Hot coils are shipped as they are, or moved to another operation and processed to cold rolled sheet, coated steel sheet, or steel pipe.
The micro structure offers excellent surface finish to rolled product along with bruise and crack resistance due to presence of graphite which can be altered depending upon the rolling condition. Appliions: These rolls are used as work rolls in the finishing stands of Hot Strip Mills, Plate Mills and Steckel Mills. Low hardness spun cast
The modern hot strip mill is furnished with a tremendous amount of equipment from the reheat furnaces all the way down to the coiling equipment. Fortunately for both our ferrous and nonferrous customers alike Butech Bliss can provide equipment and technical services for nearly every element of the hot strip mill.
"Crane view midway of the Hot Strip Mill looking south towards the furnace area at the end of the mill. The yellow apparatus was used to change finish mill work rolls. Past the tow motor is the large backup finish mill rolls. Farther down you can see the Hot strip coming out of the 4 high Roughing mill. Past that is a Two High ''Scale'' breaker.
EDDY CURRENT INSPECTION RESULTS ON WORK ROLLS FOR FINISHING STANDS OF HOT STRIP MILL* Alberto Tremea1 Abstract The eddy current system is universally recognized as a most suitable method to point out discontinuities or modifiions on the roll
Equipped with an automatic gauge control system and technologically advanced computer controls, the hot strip mill rolls slabs of seven to nine inches thick, into coils ranging in thickness from .0538" to .500" and widths of 27 to 72 inches wide. Finishing facilities
Secondary scale on hot strip and the impact on wear is another issue. Stresses from Hertzian pressure in 4high 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
process is the amount of friction in strip rolls. The roll friction is considered as one of the complex phenomena in hot strip mill process. In this article, we intend to obtain a mathematical model to calculate friction profile of rollers of Mobarakeh steel company hot strip mill unit. To do this, we need to
Work Rolls of finishing stands, High Chrome Iron as well as Chrome Steel Work Rolls of Bruise/soft spots are induced on a roll body new Indefinite Chilled Cast Iron rolls of Hot Strip Mill. 2.2. Ultrasonic Evaluation of Surface Cracks in Rolls by Surface wave / Angle Probe Usually depth of penetration of theses surface (Rayleigh) waves
Our finishing mill stands are equipped with CVC ® plus the world''s most successful technology package for strip profile, contour, and flatness control. This explains why more than 450 hot mill stands worldwide operate with CVC ® plus technology today.. Here''s what this technology can do for you: The system combines axial work roll shifting with special CVC ® grinding, a work roll bending
2005. A. Mill scale consists primarily of magnetite, Fe 3 O 4, of characteristic bluegray "steely" color. An extremely thin outer film of hematite, Fe 2 O 3, is invisible to the naked eye. The inner portion of the magnetite contains fine metal grains and sometimes, residual black FeO (see below), which contribute to the roughness of descaled metal.
ball mill hammer mill roller mill machine manufacturer of high 0peration and maintenance for milling machines bridgeport milling machine 2 roll mill machine lrm s 110 t2e styrene tetrablock copolymers and polymer blen concasseur broyeur CGM juin 201 · bruise on hotstrip mill finishing mill rolls caroube hammer mill translate
The Hot Rolling Process The primary function of the Hot Strip Mill is to reheat semifinished 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.
bruise on hotstrip mill finishing mill rolls devalklierbe bruise on hotstrip mill finishing mill rolls CAEF Roll failures manualEisenwerk, bruise on hotstrip mill finishing mill rolls When specifying work roll grades for wide strip mills, roll manufacturers need to know the rolling conditions and in particular the Finishing Mill stand number
A hot strip mill rolls cast steel slabs into thin sheets. A typical hot strip mill facility consists of, in written order, the following units: reheat furnace, roughing mill, transfer table, coilbox, crop shear, finishing mill, runout table and coiler. A layout of the plant is given in Fig. 1. Download fullsize image
Bruise On Hotstrip Mill Finishing Mill Rolls. bruise on hotstrip mill finishing mill rolls. a result, it came to be widely used as the work rolls of finish mill stands of hot strip mills. currence of roll bruises such as top marks and end marks and the. Patent US6625515 Roll defect management process Google .