bruise on hotstrip mill finishing mill rolls

Patent US6625515 - Roll defect management process - Google 23 Sep 2003 A method for inspecting a mill roll used for producing flat rolled metal strip rolls to reduce the thickness of steel ss to the desired finished surface roughening, impression marks, bruising, hardness variation, or expression marks . .In a hot strip mill, rolls containing thermal cracks are acceptable

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Roll Mark/Bruise from Hot Strip Mill - Mainline Metals

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. If the marks on the rolls are light, the defect only bruises the next coils surface and eventually wears off the rolls

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A BASIC UNDERSTANDING OF THE MECHANICS OF ROLLING

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 ROLLS

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Rolling of steel in Hot Strip Mill IspatGuru

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.

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The Hot Rolling Process - California Steel Industries

The Hot Rolling Process The primary function of the Hot Strip Mill is to reheat semi-finished steel ss 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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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-serv integrity and premium performance results.

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Hot Strip Mill » California Steel Industries

Hot Strip Mill. The Hot Strip Mill is where CSI's rolling operations begin, as steel s is reheated and rolled to hot rolled coil. With an annual capacity of more than two million tons, the rolling mill is more than a half-mile long and includes a walking beam reheat furnace, a two-high scalebreaker, five four-high roughers, a crop shear, six four-high finish mills, and two downcoilers.

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How does it : 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 s.

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thyssenkrupp
Hot Strip Mill » California Steel Industries

Hot Strip Mill. The Hot Strip Mill is where CSI's rolling operations begin, as steel s is reheated and rolled to hot rolled coil. With an annual capacity of more than two million tons, the rolling mill is more than a half-mile long and includes a walking beam reheat furnace, a two-high scalebreaker, five four-high roughers, a crop shear, six four-high finish mills, and two downcoilers.

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“Frequently Asked Questions about Hot Strip Mill Work Roll

“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 and back up roll, the back up roll” irons” the oxides onto the roll surface to a smooth surface finish.

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How does it : 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 s.

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thyssenkrupp
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,

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Highest performing Hot Strip Mills Primetals Technologies

HOT STRIP MILL — HIGHEST PERFORMANCE FOR NEW AND EXISTING STEEL MILLS The demand for hot rolled strip is growing in multiple ways. To remain competitive, new and existing mills must meet this challenge in the best possible way. The production of hot strip is a

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SMS group - Hot rolling - The modernized bar mill at

Nov 29, 2017  The 3-roll precision sizing mill will be used to roll purely SBQ grades in the diameter range from 25 to 83 millimeters. Supplemented by the PSM® (Precision Sizing Mill), Hyundai Steel can now

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SMS group GmbH
Upgrading of Hot Finishing Mill to 4-Stands, and

TP roll (top / bottom) F1-F3 IHI/Fuji Denki/Toshiba 3750 kW DC 31.2 MN 175/270/360 m/min WR 720 x 2850 mm BUR 1520 x 2850 mm TP 1620 x 2850 mm WRB TP roll (top) Cold coolant sprayer Table 1 Specifications of Hot Finishing Mill TR HTM HRT EDM 38SH 150SH EDM : Edger mill HRM : Hot reversing mill HTM : Hot tandem mill 150SH : 150-mm cut shear

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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 roll roughness in the last stand of a sheet rolling tandem cold mill).

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Main features of a modern hot strip mill - Calmet

Coilers are located between the rolling mill and the finishing mill. They roll and form coils of the transferred steel bar. The temperature is also reduced when the steel bar passes through these coils. These are the main features of a modern hot strip mill that increases quality and productivity.

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HSS Rolls Mill Rolls Manufacturer

High Speed Steel Rolls. The microstructure consists of tempered bainitic / martensitic matrix with primary and secondary carbides. Primary carbides MC, M 7 C 3, M 6 C and M 2 C are originated during the eutectic solidification. Secondary carbides are precipitated during

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Hot Strip Mill Rolls - Kaida Roll Group

Add: No.66 Xingwang Rd, Dong'an, Huangli Town, Changzhou, China +86-519-6969 5301 +86-519-6969 5305 E-mail: [email protected]

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Mill 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

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Rolling Mill Rolls -Designing Manufacturing - Hani Tech

Small, wire finishing mill stand, strip finishing mill stand. Forging. Steel. Rolling. Roll. Hot roll. Cold roll. Backup roll. Forged semi-steel and white iron. 35~60. 75-105. 40-70. 35-70. 500~1100. 700-1400. 700-1400. 500-1000. Opening, large roughing mill stand, Plate . Roughing mill stand. Cold rolled strip roll, profile and welded

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Rolls For Hot Strip Plate Mill Loyal Road Inc.

Rolls For Hot Strip Plate Mill. High Chrome Steel Rolls. HiCr Steel is characterized by excellent fire crack resistance and very good oxidation behavior at rolling temperature. Very good wear resistance and constant material properties throughout the shell layer. Work Rolls for finishing stands of bar mills.

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HSS Rolls Mill Rolls Manufacturer

High Speed Steel Rolls. The microstructure consists of tempered bainitic / martensitic matrix with primary and secondary carbides. Primary carbides MC, M 7 C 3, M 6 C and M 2 C are originated during the eutectic solidification. Secondary carbides are precipitated during

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Hot Strip Mill Rolls - Kaida Roll Group

Add: No.66 Xingwang Rd, Dong'an, Huangli Town, Changzhou, China +86-519-6969 5301 +86-519-6969 5305 E-mail: [email protected]

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Mill 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

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Rolling Mill Rolls -Designing Manufacturing - Hani Tech

Small, wire finishing mill stand, strip finishing mill stand. Forging. Steel. Rolling. Roll. Hot roll. Cold roll. Backup roll. Forged semi-steel and white iron. 35~60. 75-105. 40-70. 35-70. 500~1100. 700-1400. 700-1400. 500-1000. Opening, large roughing mill stand, Plate . Roughing mill stand. Cold rolled strip roll, profile and welded

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Rolls For Hot Strip Plate Mill Loyal Road Inc.

Rolls For Hot Strip Plate Mill. High Chrome Steel Rolls. HiCr Steel is characterized by excellent fire crack resistance and very good oxidation behavior at rolling temperature. Very good wear resistance and constant material properties throughout the shell layer. Work Rolls for finishing stands of bar mills.

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Used Hot Rolling Mills for sale. Demag equipment more

Asian Built Hot Rolling Mill Installation for producing Bar,. Equipment List: 25 tons per hour Re-Heating Furnace new 1991 Roughing Mill Group: Roughing - Rolling Mill, 25 Tons per Hour - built 2014 Intermediate Mill Group: Four Mill Stands #'s 1 ~ #4 Fiber Metal Type, new

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Hitachi Roll Material

Applications for these rolls include hot strip mill finishing train, rod and bar mill finishing, and universal mill finishing. Because of the excellent properties of these rolls, new applications are continuously being investigated and tried. H ISO 9001, ISO 14000 Certified High Speed Steel Rolls Hitachi Roll Material Adamite Steel Cr Iron Cr Steel

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Dynamic modelling and simulation of a hot strip finishing mill

A 7-stand finishing mill is shown in Fig. 2, together with the runout table and coiler.Typical values for strip thickness, temperature and speed are also given. A 4-high mill stand consists of two rolls and two backup rolls supporting them, the former having a smaller diameter as seen in Fig. 2.The backup roll supports the roll to mitigate the deflection caused by the deformation force.

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Mill Surface Defects - Mainline Metals

mill surface defects steel industry term category. When I have something I need to sell, move, or get off the floor, Mainline is my go to.

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EDDY CURRENT INSPECTION RESULTS ON WORK ROLLS

conducted in field by Innse Cilindri on 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 practs. Key Words: Work roll; Eddy current system; Bruise signal; Roll redressing.

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Rolling Mill Process - RMT Tools

Rolling Mill Process. Because a square head-end is critical to properly threading the finish mills, and because an uneven tail can bruise -roll surfaces or cause threading problems for the next production process, the head- and tail-ends of nearly every transfer bar are cropped by using crop shear, and Snap shear.

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Rolling of hot strip and strip defects IspatGuru

Jan 14, 2017  The temperature in the last finishing stand of the hot strip mill varies from 700 deg C to 900 deg C. normally camber of 0.5 mm on roll diameter is provided. Also during hot rolling, rolls get heated up and bulge out at the center, causing camber of the rolls. Gauge control in hot strip rolling mills is achieved through measurement of

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Hot 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 thick, including stainless steel grades.

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Mill Rolls Manufacturer TSR ROLLS

+86-519-83553805 E-mail: [email protected] Web Site: tsroll

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Rolling Mill Process - RMT Tools

Rolling Mill Process. Because a square head-end is critical to properly threading the finish mills, and because an uneven tail can bruise -roll surfaces or cause threading problems for the next production process, the head- and tail-ends of nearly every transfer bar are cropped by using crop shear, and Snap shear.

More
Rolling of hot strip and strip defects IspatGuru

Jan 14, 2017  The temperature in the last finishing stand of the hot strip mill varies from 700 deg C to 900 deg C. normally camber of 0.5 mm on roll diameter is provided. Also during hot rolling, rolls get heated up and bulge out at the center, causing camber of the rolls. Gauge control in hot strip rolling mills is achieved through measurement of

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Hot 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 thick, including stainless steel grades.

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Mill Rolls Manufacturer TSR ROLLS

+86-519-83553805 E-mail: [email protected] Web Site: tsroll

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finishing mill rolls

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

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Steel Rolling Mill Rolls Manufacturer Dalian - Buy Rolling

Steel Rolling Mill Rolls Manufacturer Dalian , Find Complete Details about Steel Rolling Mill Rolls Manufacturer Dalian,Rolling Mill Rolls,Rolling Mill Rolls Manufacturer,Steel Rolling Mill Rolls from Supplier or Manufacturer-Liaoning Mineral Metallurgy Group Co., Ltd.

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SIMULATED ANNEALING AND GENETIC ALGORITHMS

the finishing train in a hot strip mill. Genetic algorithms proved unsuited to this optimisation problem, despite the development of a non-linear rank-based genetic algorithm that counters the

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Used Steel Mill Equipment: Rolling Mill Equipment

As a large supplier of used steel mill equipment, we have worldwide sources availe for Bar Mills, Rod Mills, Rolling Mills, Reversing Cold mills, Rail Mills, Plate Mills and Hot Strip Mills.We can provide you with equipment best suited to your needs.

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MBI Rolls

MBI Rolls, a division of M. Brashem, Inc., has provided the best value for quality, p and serv 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.

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Rolling Technology for Thin Steel Strip in Hot Strip Mill

The hot strip mill shown in was assumed as a Fig. 1 calculation model for analysis. This facility consists of one rougher and six finishing stands. Table 1 shows the rolling conditions (Case-R) based on the assumption that low carbon steel strips which are 1.2 mm thick are produced by this hot strip mill train.

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Hot Rolling Mills TMEIC

TMEIC Supplies Superior Control Systems for Hot Rolling Mills Hot rolling mills roll heated steel, stainless, and aluminum ss 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.

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FINISHING MILL - BRS

Our off-line, four-high skin pass mill is the most powerful SMS temper mill availe. It has 18000kN of roll force as well as entry and exit bridle rolls with the ability to achieve elongations of up to 10%, required for many niche products including electrical steels. FLEX MILL™ ATTRIBUTES FINISHING MILL

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Forged and Cast Rolls AHCS - Union Electric Steel

the roughing stands of hot strip mills. High Chrome Steel Work Rolls, known for reliability and performance in operation, are the industry standard in roughing mill applications. We have re-engineered our High Chrome Steel microstructure to achieve optimal retention of surface profile and texture as well as

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Rolling (metaling) - Wikipedia

Modern rolling pract can be attributed to the pioneering efforts of Henry Cort of Funtley Iron Mills, near Fareham, England. In 1783, a patent was issued to Henry Cort for his use of grooved rolls for rolling iron bars. With this new design, mills were able to produce 15 times more output per day than with a hammer. Although Cort was not the first to use grooved rolls, he was the first to

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