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how to reverse the rougher in a hot strip mill

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    Width necking at the rougher in a hot-strip millBlair Strip Steel

    The amount of necking is determined mainly by the conditions of rougher rolling in the hot-strip millIn this paper, the mechanism of necking, the influence of rolling conditions on the amount of .Annealed Hot Rolled Strip - Hot rolled strip can be batch annealed for softer, more consistent hardness with moderate spheroidization This option is lower cost, but retains relatively wide and variable hot rolled thickness tolerances and a rougher, more variable hot rolled pickled finish.

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    Hot Strip Mill Model

    The Hot Strip Mill Model can be used for a variety of applications Current users have utilized the Current users have utilized the HSMM to study mill configurations, rolling schedules, and process parameters to gain detailed insightThe 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.

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    Rougher Price, China Rougher Price Manufacturers ,Design and Application of Roll Shape on the Rougher of Hot

    Rougher Price

    During hot mill strip production the symmetry between upper and lower work rolls cannot always be ensured Asymmetrical conditions occurring during the rolling of hot strip can cause strip curvature, ie turn up/down The mechanism of rolled strip curvature is not a simple oneREVERSING COLD MILL Advanced reversing cold-mill technology from Primetals Technologies is an ideal solution for small- to medium-sized production capacities, or for the rolling of smaller order lots of special steel grad.

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    Steckel Mill

    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)Reheat furnaces Roughing stand Finishing mill Runout table Shear Water coolant headers Coiler Transfer table Fig 1 Layout of a semi-continuous hot strip mill with 1 reversing rougher.

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    Steel

    For example, a semi-continuous hot-strip mill has only one reversing rougher in front of the finishing train Another rolling system goes even farther and uses one four-high reversing rougher and one four-high reversing finishing mill, with hot-coiling boxes in front and in back of the finishing mill (Hot coilers operate in a furnace to keep the strip hot) In addition, there are planetary .Berlin Metals - Steel Making & Technical Information Download weight charts and the Rockwell Table for more steel making information a slab enters the hot strip mill 7-1/2 to 9.

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    A BASIC UNDERSTANDING OF THE MECHANICS OF ROLLING MILL ,Upgrading of Hot Finishing Mill to 4-Stands, and

    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

    Originally, width gauges were typically positioned at the exit of the finishing train and mounted in a house for protection against the hot mill environment, and to ,Froth flotation is a process for separating minerals from gangue by taking advantage of differences in their hydrophobicity Hydrophobicity differences between valuable minerals and waste gangue are increased through the use of surfactants and wetting agents.

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    Influence of roll speed mismatch on strip curvature during ,DEFECT PREDICTION IN HOT STRIP ROLLING USING ANN AND

    Five ingoing strip thicknesses were considered, each one representing a particular pass of the reversing rougher at Corus Port Talbot hot mill Alterations were made to the finite element model's boundary conditions, ie roll gap height, to determine how the reduction affects the magnitude of strip curvature Each model has a 5% roll speed mismatch applied Results have identified, on .The data used was gathered from the hot strip mill of Ruukki in Raahe, Finland The mill with its pyrometers is illustrated in Figure 1 Slab dimensions, the chemical com-position of the slabs as.

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    Rolling of steel in Hot Strip Mill

    The hot strip mill can be either a high performance mill or a compact mill The difference in the two mill types is the coil box which, in compact hot mills, is installed between the roughing and the finishing mill It equalizes the transfer bar temperatures to the effect that with as few as six finishing stands final gauges of 12 mm can be achieved The thickness of transfer bar which the .-02-28 A hot strip mill includes at least one roughing reversing mill and a finishing train with the reversing mill spaced from the finishing mill by a distance greater than the length of the transfer bar on the penultimate pass but less than the distance of the final pass through the roughing reversing mill so as to be close coupled to the.

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    Hot strip mill

    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 125 to 13mmHBIS WORLD MAP AND COMPANY PRODUCTS HBIS GROUP Serbia Iron & Steel llc Belgrade GENERAL INFORMATION ON PLANT FACILITIES COMPANY PRODUCTS Hot.

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    Strip tracking measurement and control in hot strip ,Tata Steel upgrades hot strip mill in Port Talbot

    Poor strip tracking is one of the notorious problems threatening process stability in a hot strip mill These issues often lead to tail pinching and in the worst cases even to cobbl The main pillars of the strategy set out to tackle these issues for the Hot Strip Mills in IJmuiden are rougher mill camber control and finishing mill strip steering and tail control For such applications, a .The reversing rougher is believed to be the most powerful in Europe, with two new 125MW motors, each equivalent to 17,000hp The upgrade of the Hot Strip Mill follows investments totalling more than GBP 250M in state-of-the-art steelmaking and processing technology at the South Wales operations.

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    STATE OF THE ART WORK ROLLS FOR HOT ROLLING FLAT PRODUCTS ,Everything you need to know about flatteners and levelers

    in a single reversing roughing stand of a semi-continuous hot strip mill Figure 6: wear profiles of work rolls (Øx) in a single reversing roughing stand of a semicontinuous hot strip millAt the Hot Mill At the hot mill the crown or thickness profile can be changed without changing the shape or flatness, and vice versa Hot mills try to get the relationship between crown or profile and shape, but achieving both perfect shape and perfect crown control is almost impossible.

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    HOT STRIP MILLS Modernization concepts

    HOT STRIP MILLS Modernization concepts METALLURGICAL PLANT and ROLLING MILL TECHNOLOGY Hot Rolling Mills SMS metallurgy SMS SIEMAG Hot Strip Mills 2 ADAPTING existing hot strip mills to present-day market requirements Owing to their size and high investment volume, hot strip mills have an extremely long life Almost 40 % of the 140 conven-tional hot strip mills currently ,The Hot Strip Mill is a vital plant area in the Port Talbot steelworks where steel is rolled into continuous strip, forming 'hot rolled coil' The steel is further processed at Tata Steel sites in Wales and England, before being delivered to manufacturers of cars, food and.