how to reverse the rougher in a hot strip mill
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how to reverse the rougher in a hot strip mill

Width necking at the rougher in a hot-strip mill ...

In the top or tail portion of a hot strip, a local contraction of width unavoidably occurs, called “width necking” or simply “necking”. The amount of necking is determined mainly by the conditions of rougher rolling in the hot-strip mill. In this paper, the mechanism

The Hot Rolling Process - California Steel

The Hot Rolling Process The primary function of the Hot Strip Mill is to reheat semi-finished 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.

Width necking at the rougher in a hot-strip mill ...

The amount of necking is determined mainly by the conditions of rougher rolling in the hot-strip mill. In this paper, the mechanism of necking, the influence of rolling conditions on the amount of necking and the optimum edger-rolling pass schedule are described. The main conclusions obtained are as follows: (i) Necking originates from the ...

How does it work: hot-strip rolling mill - YouTube

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.

MODERNIZATION OF HOT STRIP MILLS - SMSgroup

Dunkirk hot strip mill. This modernization measure ensures the operational reliability of the drive train, prepares the mill for a future extension and reduces mill maintenance. The rougher R5 is the last of four non-reversing stands in the five-stand roughing mill of ArcelorMittal’s hot strip mill in Dunkirk, France.

Roughing Mill - an overview | ScienceDirect Topics

John G. Lenard, in Primer on Flat Rolling (Second Edition), 2014 2.7 Generation III – Coil Box Hot Strip Mills. In the 1970s, Stelco of Canada developed the hot coil box designed for installation in hot strip mills ahead of the finish mill for coiling the transfer bar from the roughing mill and uncoiling it into the finishing mill. The coil box reduced the distance between the roughing mill ...

The Hot Rolling Process - California Steel

The Hot Rolling Process The primary function of the Hot Strip Mill is to reheat semi-finished 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.

Hot strip mill - ArcelorMittal in Belgium

Hot strip mill. Around a third of the products we send out to our customers, are hot rolled. In the hot strip mill (Ghent), slabs coming from the continuous caster are rolled out to steel plates with a thickness of around 1.25 to 13mm. How does this work? First, the slabs coming from the continuous caster are pre-sorted in the slab yard.

Width necking at the rougher in a hot-strip mill ...

Abstract The accuracy of the width of a hot strip is very important for the improvement of yield, both for the steel maker and the steel user. One of the important technical problems concerning width accuracy is securing a final hot strip with uniform width along the whole length. In the top or tail portion of a hot strip, a local contraction of width unavoidably occurs, called “width ...

Rolling Technology for Thin Steel Strip in Hot Strip Mill ...

2. Study with a continuous hot steel strip rolling 2.1 Calculation model for hot steel strip rolling 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 ...

What is a Reversing Mill? - Definition from Corrosionpedia

Nov 28, 2017 · The purpose of the reversing mill is to reduce the thickness of the steel to the customer’s specifications. The hot roll band passes back and forth between the rolls until it reaches the specified thickness. Benefits of reversing mills include: Flexible, low-cost rolling of a wide range of products. Tight strip thickness and shape tolerances.

CN100357043C - Method and installation for hot-rolling ...

Process for hot rolling steel strips comprises cropping the strip using reverse rolling in a Steckel mill (8) using crop shears (20) arranged between a driver (17) and the mill. An Independent claim is also included for a device for hot rolling strips.

Reheat Furnace - an overview | ScienceDirect Topics

Conventional slab hot strip mill-finish mill endless rolling for reduced head end threading, improved yield and higher productivity. Thin slab hot strip mills. Thin slab endless rolling hot strip mills. Hydraulic finish mill loopers to replace motor-operated loopers for faster looper response for more uniform strip width control and reduced ...

Continuous band mill for the production of thick strips

The prior art, for example, installation of hot-rolled strips or sheet blanks containing consistently rougher, front reverse winder, two reversible bucket and rear reverse winder, all stands are equipped with four-roll sets [1]. The main disadvantages of the above devices is, first, its complexity because n is UGA, and, secondly, the need for ...

(PDF) Feedback Control for Hook, Camber, Wedge and Strip ...

Strip-to-Strip Feedback Control Against Hook. The in-bar strip steering in the finishing mill would maintain the camber, i.e. wouldn’t change the wedge in the finishing mil l. too much. In order ...

BLAST FURNACE, STEEL WORK, AND ROLLING AND FINISHING MILL ...

ROUGHER 613.362-018 Rougher, Bar Mill 613.362-018 Rougher, Hot-Strip Mill 613.362-018 Rougher, Merchant Mill 613.362-018 ROUGHER OPERATOR 613.662-014 sampler 509.584-010 SAMPLER 599.684-014 Sampler, Ovens 599.684-014 SATURATOR OPERATOR 558.362-018 scale-and-skip-car operator 921.683-062 SCARFING MACHINE OPERATOR 816.682-010 Scrap Baler

OALJ Law Library, DOT, Machine Trades Occupations 613.360 ...

Jun 01, 2002 · Gives directions to mill crew in readjusting roll draft and realigning guides. May set up and monitor computerized roughing roll stands. May be designated according to type of mill operated as Rougher, Bar Mill (steel & rel.); Rougher, Hot-Strip Mill (steel & rel.); Rougher, Merchant Mill (steel &

Metallurgist & Mineral Processing Engineer

Metallurgists & Mineral Processing Engineers. For its extensive practical experience, 911 Metallurgist has a clear understanding of what successful mineral processing engineering is and how to go about achieving it. Your goal is the production of a material that is marketable and returns you and your investors sustainable revenues.

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Hot Rolled Products Analyst Site Visit Port Kembla

Hot Strip Mill 2.4Mtpa Plate Mill 0.3Mtpa Cold Mill 0.5Mtpa Slabs to Coated Products Western Port and to export Hot Rolled Coil to Coated Products Springhill & Export Markets ... Rougher Coil box Finisher 1-10mm thick Coiler 500-800 m Run out table cooling Strip Casting 15-150 m/minute Scale Control Chamber 20-40 metric ton coil 0.7 - 1.8 mm ...

New Rolling Method R f Reversing Cold Rolling Mill

Key words: Zoom-MillTM, Off-gauge, Minimization, Yield, Productivity, Leader strip, Spot welding INTRODUCTION For production of cold rolling steel strips in the size of yearly production capacity ranged from 150 to 300 thousands tons, a reversing cold rolling mill, which takes relatively inexpensive capital investment, is put into use.

Feedback Control for Hook Camber Strip Mill

Hot strip mill no. 1 of thyssenkrupp Steel Europe consists of 2 roughers, the first is called R1, the second one called Z3. ... While the first rougher is considered to perform several reversing ...

REVERSING COLD MILL - Primetals Technologies

A two-stand reversing cold mill can deliver capacities between 300,000 t/a of thin-gauge products or 1,000,000 t/a and more of thicker-gauge products. Main benefits of Primetals Technologies' reversing cold mills. High production capacity and yield. Flexible, low-cost rolling of a wide range of products, especially for small order lots.

Rivers of Steel- Workers and Jobs

Plate Mill Salt thrower: throws salt on slabs to remove scale as they enter the plate mill rolls; Bar Mills Rougher: sets up, adjusts, and regulates the rolls and guides on a continuous roughing train of a bar mill; Bar catcher: catches the bar from one roll stand, loops and feeds it into the next stand; Hot Strip

Study on Short Stroke Control in Roughing Stage of ...

Width necking at the rougher in a hot-strip mill. Journal of Mechanical Working Technology, (1983). DOI: 10.1016/0378-3804(83)90066-9 [3] Wenbin Liu, Yonglin Kang.Parameter optimization of short stroke control model on 2250mm hot strip mill of Qian'an Steel Company. Rolling, (2010). ...

Automated method and apparatus for polishing hot strip ...

The projected cost for a new, state-of-the-art hot strip mill is between 500 million and one billion dollars. It can take five to seven years to complete the construction of a new mill. In view of these costs, there are presently no known plans to build a new hot strip mill anywhere in the world.

US Patent for Semi-continuous hot rolling of metal strip ...

A wide plate mill comprising a reversing breakdown stand with turn-arounds and a reversing finishing stand arranged in the same way as the strip and light plate mill may be added on the other side of the heating furnaces, so utilizing some of the cooling facilities of the strip and light plate mill.

Waterbury Farrel Rolling Mills

* Rapid roll opening in case of strip break 20 High Cold Rolling Mills Mill Type Work Roll Diameter (Nom.) Backing Bearing Diameter Strip Width, Max. Typical Product Minimum Gauge Narrowest Mill Widest Mill Inch mm Inch mm Inch mm Inch mm Inch mm ZR-32 0.250 6.35 1.875 47.63 4.25 105 7.25 180 Ultra-thin foil nonferrous, high carbon, stainless ...

Steel process flow_lines - SlideShare

Nov 05, 2010 · The primer-coated strip passes into a baking oven to cure the primer and then into a cooling zone. The strip is then conveyed to the sec- ond paint coater where the finish coating is applied to both surfaces with reverse roller coaters. The strip then enters another oven for curing and cooling. FAY-OFF REELS F'FlE-TREATMENT 9.

Silviu TUDORACHE - CTO MILLS - Liberty Galati | LinkedIn

Head of Hydraulic Sector Hot Strip Mill. ArcelorMittal Galati. sept. 2000 - iul. 20098 ani 11 luni. Responsabil cu intretinerea si repararea instalatiilor de actionari hidraulice si ungere in Laminorul de Benzi la Cald. Peste 20 de oameni in subordine. Gestionarea unui buget de `800,000 Euro/An.

ENHANCING ENERGY COST EFFICIENCY OF HOT ROLLING

two tendencies reverse, theoretically at optimal target reheating temperature the sum of unit energy consumption of reheating and forming is minimal [4]. 2. COLLECTING AND ANALYZING DATA Great number of data can be obtained in relation with forming in the company group’s hot rolling mill quality management system.

Arvedi ESP — Real Endless Strip Production | Primetals ...

Endless strip production technology revolutionizes flat-steel production in the same way that LD converter steelmaking technology and continuous casting changed the face of the steelmaking industry in the previous century. The Arvedi ESP process produces hot strip in a combined, continuous and uninterrupted casting and rolling process.

Stretch: how innovation continues once investment is made ...

May 21, 2013 · In 1966 a wide hot strip rolling mill was commissioned in Ghent, Belgium for an initial capacity of 1.75 million tonnes of steel strip per year. During the years 2007–2009, the same rolling mill produced 6.5 million tonnes of steel per annum – approaching four times its rated capacity.

Eisenwerk Work Roll Developments | Cast Iron | Rolling ...

in a single reversing roughing stand of a semicontinuous hot strip mill CONAC 2007 – 3rd Steel Industry Conference and Exposition -6– 11th to 14th November, 2007 - Centro Convex, Monterrey, N.L., México Example 2: FINISHING STANDS NO. 1 - 3 of a 7 stand HSM WR Ø740x1800 mm rolling mainly HSLA and automotive sheets (fig. 7)

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