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technology of hot rolling mill process pdf

Rolling processes 51 introduction Rolling is the process of reducing the thickness or changing the cross section of a long workpiece by compressive forces applied through a set of rolls as shown in figure 51 Fig 51 Most rolling is carried out by hot working called hot rolling owing to the large amount of deformation required
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    specific knowhow in rolling mills in order to provide the best services to the customer The hot rolling technology of Primetals Technologies comprises a wide range of advanced equipment and technologies together with studies services and consultancy in the area of rolling process and quality improvement as well as metallurgical knowhow


    to roll thin hot strip in a finishing mill of a CSP line and in a conventional hotstrip mill The goal is to achieve improved strip thickness performance and operational stability Primetals Technologies has developed a new control concept for rolling ultrathin hotrolled strip in the finishing mill of an ESP line


    Rolling mills are not a standard machine tool nor are they built for stock They are designed and builttoorder to specifically accomplish an end product or process At one point during the industrial revolution in America the United States led the world in hot and cold rolling plate mills slabbing mills and blooming mills

  • HOT ROLLING PRACTICE – An Attempted Recollection

    Hot Rolling Technology Rolling is classified according to the temperature of work piece rolled If the temperature of the metal is above its recrystallization temperature then the process is termed as hot rolling For hot working processes large deformation can be successively repeated as the metal remains soft and ductile The


    Secondary scale on hot strip and the impact on wear is another issue Stresses from Hertzian pressure in 4high 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

  • Hot Rolling an overview ScienceDirect Topics

    The hot rolling of strands to wire 55 mm in diameter comprises five main processes conditioning of the input scarfing grinding heating to rolling temperature descaling rolling down to the final diameter and finishing trimming slitting cutting LCI information on the hot rolling process was taken directly from Althaus et al 2004

  • The Hot Rolling Process

    The Hot Rolling Process The primary function of the Hot Strip Mill is to reheat semifinished 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 77000 hp and finally coiling up the lengthened steel sheet for transport to the next process


    9 17 Rolling Mills Equipment is massive and expensive Rolling mill configurations – Twohigh two opposing rolls – Threehigh work passes through rolls in both directions – Fourhigh backing rolls support smaller work rolls – Cluster mill multiple backing rolls on smaller rolls – Tandem rolling mill sequence of twohigh mills 18 Various configurations of rolling mills a 2

  • Rolling of Metals Process and Principles With Diagram

    The rolling process is shown in Fig 21 Rolling is done both hot and cold It is accomplishes in rolling mills A rolling mill is a complex machine having two or more working rollers supporting rollers roll stands drive motor reducing gear flywheel coupling gear etc Rollers may be plain or grooved depends upon the shape of rolled product

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