bruise for hotstrip mill finishing mill rolls

  • Roll Mark/Bruise from Hot Strip Mill Mainline Metals

    This defect can be caused when a tail-end of a previous coil has variable shape, and passes through the last hot mill finishing stand. The sheet can whip/hit into the roll surface and mark it. As a result, the following coil produced through the hot strip mill will have these bruises on the head end.Rolling of steel in Hot Strip Mill IspatGuru,Dec 03, 2015· After exiting the finishing mills, the strip is carried down by a large number of individually-driven rolls through four to 12 banks of low-pressure, high-volume water sprays that cool the red-hot strip to a specified coiling temperature between 400 deg C and 900 deg C and into down coilers.

  • EDDY CURRENT INSPECTION RESULTS ON WORK ROLLS FOR

    conducted in field by Innse Cilindri on work rolls of finishing stands of hot strip mills. The correct interpretation of the eddy current signals and a good calibration of the automatic system have allowed, in many cases, a substantial optimisation of regrinding practices. Key Words: Work roll; Eddy current system; Bruise signal; Roll redressing.The Hot Rolling Process,Finishing CSI’s Hot Strip Mill includes six finishing mills, which reduce the thickness of the transfer bar down to the gauge required by the customer or the next process. The rolling speed is set to allow the last stand to perform the final reduction at the finishing temperature, between 1500° to

  • Hot Strip Mill YouTube

    SAMPLE VIDEO FOR ROLLING MILLSMill Processing & Finishing ASKO, Inc.,ROLLING MILLS: Flat Product Mills Mill Processing & Finishing Applications in which our knives are used include Flat Rolled Coil and Sheet Processing Lines for: Cut-to-Length Galvanizing Hot Roll Finishing Recoil & Inspection We manufacture every type of k

  • rolls for rolling mill SlideShare

    Feb 24, 2017· These rolls are suitable for both two-Hi roughing and early stand of four-Hi finishing for hot strip mills. Chemical Composition % Symbol C Si Mn Cr Ni Mo HCrS 1.00-1.80 0.40-1.00 0.50-1.00 8.00-15.00 0.50-1.50 1.50-4.50 Properties and Application % Symbol Hardiness HS Tensile Strength MPa Application HCrS 70-85 ≥450 (core) Roughing workThe Hot Rolling Process California Steel Industries,Finishing CSI’s Hot Strip Mill includes six finishing mills, which reduce the thickness of the transfer bar down to the gauge required by the customer or the next process. The rolling speed is set to allow the last stand to perform the final reduction at the finishing

  • 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 ROLLSEDDY CURRENT INSPECTION RESULTS ON WORK ROLLS ,conducted in field by Innse Cilindri on work rolls of finishing stands of hot strip mills. The correct interpretation of the eddy current signals and a good calibration of the automatic system have allowed, in many cases, a substantial optimisation of regrinding practices. Key Words: Work roll; Eddy current system; Bruise signal; Roll redressing.

  • CARBIDE REINFORCEMENT FOR FINISHING MILL ROLLS

    The challenges for work rolls in the last finishing stands of hot strip mills can be summarized as follows [12]: The work rolls must have a low friction coefficient and a low sticking tendency, an excellent surface quality and a good resistance against cracks due to mechanical overload in the mill.rolls for rolling mill SlideShare,Feb 24, 2017· These rolls are suitable for both two-Hi roughing and early stand of four-Hi finishing for hot strip mills. Chemical Composition % Symbol C Si Mn Cr Ni Mo HCrS 1.00-1.80 0.40-1.00 0.50-1.00 8.00-15.00 0.50-1.50 1.50-4.50 Properties and Application % Symbol Hardiness HS Tensile Strength MPa Application HCrS 70-85 ≥450 (core) Roughing work

  • “Frequently Asked Questions about Hot Strip Mill Work Roll

    Keywords: rolls, wear, oxidation, firecracks, sticking, friction Abstract 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 intoHow 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.

  • Hot Strip Mill Rolls|Nippon Steel Rolls Corpoaration

    We are supplying HSS rolls to the most advanced Hot Strip Mills in Asia, North America and Australia as well as in Japan, and their performance has been proven in every type of mill such as pair cross mill, CVC mill and CSP mill. The following materials are available for each finishing stands. 1) Front stands work rollsHot strip mills (Steel) SMS group,You'll appreciate X-Roll ® hot strip mills from SMS group as all-round plants for high-quality hot strip. They are designed to produce flat steel from thin strip with a minimum final gauge of 1.2 millimeters to high-strength pipe steels up to 25.4 millimeters

  • MBI Rolls

    MBI Rolls, a division of M. Brashem, Inc., has provided the best value for quality, price and service to the steel industry for more than 30 years. We are a leading distributor of mill rolls to the north American steel mill industry, with significant share of the long bar market.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

  • Hot Strip Mill an overview ScienceDirect Topics

    John G. Lenard, in Primer on Flat Rolling (Second Edition), 2014. 3.5 Friction and Wear. Work rolls in hot strip mills wear due to friction between the roll surface and hot strip. (Back-up rolls wear as well, but under pressure with elastic deformation, the friction is much less, except for the high work roll roughness in the last stand of a sheet rolling tandem cold mill).Method for improving hot strip mill processing Blazevic,In a hot strip mill, relatively wide steel slabs are rolled into very thin strips. Typically, a hot strip mill operation consists of three stages: a roughing stage, a finishing stage and a coiling stage. In the roughing stage, the thickness of the slab is reduced from a

  • Rolling mill Rolls and Roll Shop IspatGuru

    Dec 10, 2015· 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 Hot Rolling Process California Steel Industries,Finishing CSI’s Hot Strip Mill includes six finishing mills, which reduce the thickness of the transfer bar down to the gauge required by the customer or the next process. The rolling speed is set to allow the last stand to perform the final reduction at the finishing temperature, between 1500° to

  • EDDY CURRENT INSPECTION RESULTS ON WORK ROLLS

    conducted in field by Innse Cilindri on work rolls of finishing stands of hot strip mills. The correct interpretation of the eddy current signals and a good calibration of the automatic system have allowed, in many cases, a substantial optimisation of regrinding practices. Key Words: Work roll; Eddy current system; Bruise signal; Roll redressing.HYBRID STEEL ROLL GRADES FOR HOT STRIP MILL LATE ,Most Hot Strip Mill Finishing Stand rolls are centrifugal cast. The exception being in Japan and various North American Mills, where CPC rolls produced in Japan are used. There have been few revolutionary changes in roll grades. Prior to the 1970s, ICDP rolls were used in all stands.

  • A novel real-time fuzzy-based diagnostic system of roll

    1342 IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL. 34, NO. 6, NOVEMBER/DECEMBER 1998 A Novel Real-Time Fuzzy-Based Diagnostic System of Roll Eccentricity Influence in Finishing Hot Strip Mills Daniel F. Garc´ıa, Jos´e M. L´opez, Francisco J. Su´arez, Javier Garc´ıa, Faustino Obeso, and Juan A. Gonz´alez Abstract—This paper proposes a method for the Temperature Monitoring for Hot Rolling Mills Williamson,Steel Hot Rolling Mills Temperature Monitoring Temperature Control in Hot Rolling Mills. Hot Rolling Mills are used to reheat shapes of steel to soften them enough so that they can be rolled thinner and longer through a series of rolling stands. The finished product can be either a strip, plate, rod, bar, wire, or shape (rails and H-beams).

  • “Frequently Asked Questions about Hot Strip Mill Work Roll

    Keywords: rolls, wear, oxidation, firecracks, sticking, friction Abstract 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 intoSuccess Stories Hot Strip Mill,Hot Strip Mill: A large manufacturer of rolled steel in Russia wanted to extend the bearing replacement intervals on the finishing section of its hot strip mill. Due to severe operating conditions, the standard 4-row tapered roller bearings were only lasting 1,400 hours, with replacements and maintenance costing 442,000€ per annum.

  • 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 ROLLSHot Strip Mill Rolls|Nippon Steel Rolls Corpoaration,We are supplying HSS rolls to the most advanced Hot Strip Mills in Asia, North America and Australia as well as in Japan, and their performance has been proven in every type of mill such as pair cross mill, CVC mill and CSP mill. The following materials are available for each finishing stands. 1) Front stands work rolls

  • MBI Rolls

    MBI Rolls, a division of M. Brashem, Inc., has provided the best value for quality, price and service to the steel industry for more than 30 years. We are a leading distributor of mill rolls to the north American steel mill industry, with significant share of the long bar market.HOT STRIP MILLS Mechanical Equipment SMS group,SMS DEMAG Hot Strip Mills 10 The drum-type shear installed between the roughing and finishing mills of a hot strip mill crops the trans-fer bar at its head and tail. In special applications, the drum-type shear also serves to divide transfer bars and finished plates. Based on the experience gained from more than 60 drum-type shears built so far,

  • Hot Strip Mill an overview ScienceDirect Topics

    John G. Lenard, in Primer on Flat Rolling (Second Edition), 2014. 3.5 Friction and Wear. Work rolls in hot strip mills wear due to friction between the roll surface and hot strip. (Back-up rolls wear as well, but under pressure with elastic deformation, the friction is much less, except for the high work roll roughness in the last stand of a sheet rolling tandem cold mill).Method and apparatus for polishing hot strip mill run-out,A hot strip mill usually includes five to seven finishing stands, each finishing stand consisting of two work rolls and two back-up rolls. The work rolls in a finishing stand must be frequently replaced (two to three times in an eight hour shift), due to the rapid roll surface deterioration which occurs during rolling.

  • End Mills Finishing End Mills End Mill Sets

    MSC offers an extensive line of end mills for almost any application. Available in different configurations, sizes and features, MSC's end mill offering ranges from square end and corner radius to indexable end and roughing.MSC also carries indexable copy end mills, CNC end mill holders and milling chucks, manual end mill holders and so much more.,