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how to reverse the rougher in a hot strip mill

  • how to reverse the rougher in a hot strip mill

    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.New Rolling Method Of Reversing Cold Rolling Mill,in the mill, and tension between the mill and each reel is established. After that, rolling of the first pass is started. The tension becomes lost when the hot coil is taken out from the payoff reel, so reduction of off-gauge is implemented by applying tension due to friction force using a strip press in the mill.

  • Hot strip mill mathematical models and set-up calculation

    This setup calculation was applied to a New Zealand hot strip mill, which consists of a reversing rougher and a four-stand finishing mill. With this configuration, strip was successfully rolled with a finished thickness of 2 mm and a width of 1250 mm. >Dynamics and Variance Control of Hot Mill Loopers,Layout of a semi-continuous hot strip mill with 1 reversing rougher mm or even less, and its length may well exceed a kilometer. While the strip properties such as centerline gauge, width, proflle and temperature must be precisely controlled to meet product requirements, these properties are only

  • 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.HOT STRIP MILLS Modernization concepts SMS group,The hot strip mill of Chinese steelmaker Baosteel Group Shanghai Meishan Corpo-ration Ltd., Shanghai Meishan for short, had been in operation in Japan for 21 years before it was dismantled there and rebuilt and put into service in Meishan, approx. five hours by car north-west of

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

    One is securing the expected final strip-width with minimized mill margin. At the rougher train in a hot-strip mill, as a slab is rolled by not only horizontal flat-rolls but also vertical edger-rolls, the width spread phenomenon is more complicated than in a simple flat-rolling 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

  • 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.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, Wedge and Strip

    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 reversingDynamics and Variance Control of Hot Mill Loopers,Layout of a semi-continuous hot strip mill with 1 reversing rougher mm or even less, and its length may well exceed a kilometer. While the strip properties such as centerline gauge, width, proflle and temperature must be precisely controlled to meet product requirements, these properties are only

  • New Rolling Method Of Reversing Cold Rolling Mill

    in the mill, and tension between the mill and each reel is established. After that, rolling of the first pass is started. The tension becomes lost when the hot coil is taken out from the payoff reel, so reduction of off-gauge is implemented by applying tension due to friction force using a strip press in the mill.Hot strip mill mathematical models and set-up calculation,This setup calculation was applied to a New Zealand hot strip mill, which consists of a reversing rougher and a four-stand finishing mill. With this configuration, strip was successfully rolled with a finished thickness of 2 mm and a width of 1250 mm. >

  • VSS CONTROL OF STRIP STEERING FOR HOT ROLLING MILLS

    VSS CONTROL OF STRIP STEERING FOR HOT ROLLING MILLS M.Okada, K.Murayama, Y.Anabuki, Y.Hayashi West Japan Works (Kurashiki District), JFE Steel Corporation Kawasakidori 1-chome, Mizushima, Kurashiki 712-8511 Japan Abstract: Strip steering is one of the most serious problems in the finishing mill in the hot strip rolling process.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 ROLLS

  • 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).HEAVY-PLATE MILLS References SMS group,The heavy plate mill at Angang Steel Company went into operation in August 2008. The two-stand mill line consists of a 5.5 m roughing stand and a 5.0 m fin ishing stand. The roughing stand was China's first 5.5 m heavy-plate millstand and the widest to have gone into opera-tion worldwide for over 30 years. The 5.0 m finishing stand is

  • CSP technology SMS group

    Compact in design, CSP ® produces high-quality hot strip in a single manufacturing line that combines casting, heating, and rolling. Our proven CSP ® caster with its patented funnel-shaped mold casts thin slabs in thicknesses ranging from 50 to 90 mm. Next, the slabs go into the CSP ® furnace for temperature equalization. Straight after that, the CSP ® mill rolls them to final strip thickness.Reversing cold mills (steel) SMS group,The reversing cold rolling mill is the all-rounder among the cold rolling mills: Here, thin strips, thick strips, soft grades, high-strength and ultra-high-strength strips

  • (PDF) Wedge and Camber Control ResearchGate

    challenge for today’s production in hot strip m ills. Although camber has been treated as a prob lem for many years, cf. e.g. [1 4], most of such studies areBlair Strip Steel Products,Annealed And One-Pass Hot Rolled Strip Hot rolled strip is annealed for softness and gauge-corrected for closer thickness tolerances on a cold rolling mill. This is a lower cost option where the degree of spheroidization, dimensional tolerances or surface finish may not be as demanding in either the metal forming process or the finished part.

  • MODELLING OF WIDTH CONTROL FOR HOT STRIP MILL

    continuous slab caster feeding a hot strip mill is limited. This has increased the requirement for width reduction in the hot strip mill rolling stands. The width of a slab can be reduced using vertical edger rolling stands in the roughing mill section and by using a slab sizing press.Causes detection of unqualified bendability of hot rolled,(4) Down coiler: On exit from the mill, the hot strip typ-ically has a velocity of up to 10m/s and can be hun-dredsofmetresinlength.Thedowncoilerallowsthe striptobeconvertedintoacoil. 1.2. Bendabilityofhotstrip In hot strip rolling, mechanical properties of steel mate-rials are important to steel quality which are detected offline and

  • New Rolling Method Of Reversing Cold Rolling Mill

    in the mill, and tension between the mill and each reel is established. After that, rolling of the first pass is started. The tension becomes lost when the hot coil is taken out from the payoff reel, so reduction of off-gauge is implemented by applying tension due to friction force using a strip press in the mill.Product Overview Stelco,Hot Rolling Technology Stelco’s Lake Erie hot strip mill utilizes three slab reheating furnaces, a vertical edger & reversing rougher, a Coilbox, a six-stand finishing train, an advanced run-out table cooling system and two down coilers. These hot rolling technologies, coupled with Stelco’s strict composition

  • Hot rolling

    The slabs heated to the temperature of hot forming are rolled by the rougher into transfer bars with a thickness of 24 36 mm (depending on the gauge, width and quality of the rolled sheet). The reversing roughing mill is composed of one vertical, so-called edging mill stand and one horizontal two-high mill 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).

  • REVERSING COLD MILL Primetals Technologies

    Also strip flatness measuring equipment mounted at one or both ends of the mill combined with multi-zone work-roll cooling to meet the highest demands for flatness. Two-stand reversing cold mills Primetals Technologies' two stand reversing cold mills combine the flexibility of single-stand reversing mills with the capacity of conventional coilReversing cold mills (steel) SMS group,The reversing cold rolling mill is the all-rounder among the cold rolling mills: Here, thin strips, thick strips, soft grades, high-strength and ultra-high-strength strips

  • Causes detection of unqualified bendability of hot rolled

    (4) Down coiler: On exit from the mill, the hot strip typ-ically has a velocity of up to 10m/s and can be hun-dredsofmetresinlength.Thedowncoilerallowsthe striptobeconvertedintoacoil. 1.2. Bendabilityofhotstrip In hot strip rolling, mechanical properties of steel mate-rials are important to steel quality which are detected offline andCSP technology SMS group,Compact in design, CSP ® produces high-quality hot strip in a single manufacturing line that combines casting, heating, and rolling. Our proven CSP ® caster with its patented funnel-shaped mold casts thin slabs in thicknesses ranging from 50 to 90 mm. Next, the slabs go into the CSP ® furnace for temperature equalization. Straight after that, the CSP ® mill rolls them to final strip thickness.

  • Active disturbance rejection control for strip steering

    Abstract Strip off-centering is a displacement of strip center from a roll center. The mathematical model is constructed based on strip dynamics, roll deformation and tension. It includes time-varying input delay and actuator dynamics. To reduce an off-center value of the strip, active disturbance rejection control algorithm is proposed. The simulation using a realtime simulator shows that theSteel Forming of steel Britannica,Steel Steel Forming of steel: Forming processes convert solidified steel into products useful for the fabricating and construction industries. The objectives are to obtain a desired shape, to improve cast steel’s physical properties (which are not suitable for most applications), and to produce a surface suitable for a specific use.

  • Thick unevenness compensation in a hot rolling mill having

    Hot rolling products are under an increasing demand of better quality features as thickness profile, strip width and flatness, and material mechanical properties. The project goal is the improvement of the production quality in an existing hot rolling mill at Aceralia Steel Corporation.SAIL commissions hot strip mill at Rourkela steel plant,The new hot strip mill-2 at SAIL's Rourkela steel plant rolled out its first HR coil, within two days of commencement of hot trials, the filing said.

  • Roughing Mill Buyers Customers of Roughing Mill (Product

    Top buyers of roughing mill from around the world. Panjiva helps you find, evaluate and contact buyers of roughing mill.Steckel Mill Solutions by Primetals Technologies,A twin stand mill with a rougher stand before the steckel mill is suitable for an output of 800,000 tonnes a year. Features. Mill types: 4-high work roll shift mill; 4-high Pair Cross mill (PC mill) with on-line roll profiler and dynamic PC option for dynamic Automatic Profile and Flatness Control (APFC).

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