Roll pass design book hot rolling mill

Roll pass design is an essential part of long product rolling process, since the long products are rolled between the shaped rolls in the long product rolling mills. At a rolling mill, blooms and slabs are further rolled down to intermediate parts such as plate, sheet, strip, coil, billets, bars and rods. Thorough account of the hot rolling process and facilities as well as followup treatments given to hot rolled products. Rolling mill pass design crusher mills, cone crusher. 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. Pdf roll pass design for hot flat rolling of plain. Roll bond evaporators are manufactured from our rolling mill with the integration of primary and secondary surfaces. A determination of the total roll separating force during rolling of bimetal rods in the grooves the proper design of the rolling process of the bimetal rods in the grooves requires taking into account many constraints affecting the process. A tandem mill is a special type of modern rolling mill where rolling is done in one pass. The complete technology book on hot rolling of steel. When the steel is compressed in the rolls it will obviously. Many of these products will be the starting material for subsequent manufacturing. The final chapter explains the purpose of roll pass design to ensure the maximum output at minimum cost as well as to reduce the roll wear to a minimum.

Watch how an optimum roll pass design leads to the distribution of loads across rolls, ensuring better rolling quality and reduction in specific power consumption. Roll pass design of uic 60 rail using finite element. Objective of roll pass design steel sections are generally rolled in several passes, whose num ber is determined by the ratio of initial input material and final cros s section of finished product. This book is a valuable resource for rolling mill engineers. Basics of rolling a rolling mill consist of several, at least two rolls cylindrical or nearly cylindrical bodies which are termed as roll and which rest in bearings at their ends. Dipartimento di tecnologia e sistemi di produzione, politecnico di torinoltaly received on january 8,1990 in the paper a general computer approach strategy concerning the roll pass design for round bars is presented. Two high stands is either reversing mills in which the steel passes back and forth.

Help with reading books report a bad link suggest a new listing home search new listings authors titles subjects serials. Roll pass design for hot flat rolling of plain carbon steel. What are limitations in bar and rod roll pass design. The top roll closes on it and feeds it to you and releases it as the eccentricity takes the roll away. Mild steel plates of various aspect ratio woho widththickness.

Pdf a new method for roll pass design optimisation sead. An ultimate goal in engineering design is to apply scientific knowledge in order to enable the sustainable manufacture of a product. What you can expect from our hot rolling mills are high productivity and costeffectiveness. This stateoftheart volume examines steelrolling technology in a systematic and comprehensive mannerproviding an excellent synthesis of current information from three different branches of sciencephysics, metallurgy, and engineering. Pass design the leader sections for the multiple slit rolling process, e. Oct 18, 2017 rolling is a metal forming process, in which stock of material is passed between one or more pairs of roller to reduce and maintain the uniform thickness. Roll pass designing article about roll pass designing by. Rollers may be plain or grooved depends upon the shape of rolled product. Rolling process animation rolling mill machine concept by. This book discusses as well the different types of rolls for various rolling mills, including blooming, plate, sheet, sheet bar, small section, heavy product, skin passing, and cold rolling mills. Hot rolling practice an attempted recollection insdag. To be able to comply with customers needs and obtain improvements in productivity and reductions in production cost, it was decided to renew the finishing mill with threeroll rolling mills of the latest design.

In continuous bar mills department of metallurgical and materials engineering. Secondary scale on hot strip and the impact on wear is another issue. Hello friends, in this video i have discussed about the roll pass design of rolling mill and its various key features. In the conventional hot strip mills the minimum strip thickness rolled was 1,5 2 mm. In this study, a computeraided design cad system to support roll pass and roll profile design of bar rolling, where simple shapes like round and square bars are produced, was developed in order. This stateoftheart volume examines steel rolling technology in a systematic and comprehensive mannerproviding an excellent synthesis of current information from three different branches of sciencephysics, metallurgy, and engineering. The rolling mill for roll bond evaporators gives perfect and desired output by providing unique design and flexibility for direct cooling refrigeration system. Standards, roll pass design, layout, equipment and guiding system and discuss the operational. The normal and average center distance from the center of one roll to the center of other determine the size of mill. Thorough account of the hotrolling process and facilities as well as followup treatments given to hotrolled products. During the technology design the rolling separating force is a parameter among many others, which should. This is the first part of video next is coming tomorrow.

We have a technology collaboration with schweitzer rolling technology, inc. 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. In thinslab continuouscast rolling mills the strip rolled thickness is below 1 mm and the strip caster aims to cast between 2 and 1 mm. Jan 08, 2014 design a new product to roll on an existing mill. Roll pass design in continuous bar mills slideshare. There are many types of reheating furnaces with various designs. These rolls can either be flat or grooved contoured for the hot rolling of rods or shapes. The hot rolling process california steel industries, inc. Pdf methodology for calculation of rolling load and. A determination of the total roll separating force during. Correct pass profile in the rolls correct roll gap to ensure no overfill correct pass alignment between top and bottom rolls sound roll neck bearings and positive roll.

Numerical simulation in roll pass design for bar rolling. Roll pass designingalso includes the calculation of pressing forces and their distribution on the roll passes. Main content use access key 5 to view full text ocr mode. Rail, rollers, shape rolling, roll pass design, finite element method. Depending on your final products and production volume, we develop custom solutions wherever you are in the world. The first in the ussr rolls for hotrolling mills were produced from ingots weighing up to 40. The cross section area is reduced in each pass and form and size of the stock gradually approach to the desired profile.

Creating the rolling plan, calculating the power and roll loads, and analyzing the suitability of the equipment to provide the necessary power and torque and withstand the rolling loads. Pdf methodology for calculation of rolling load and forces. Mar 09, 2018 watch how an optimum roll pass design leads to the distribution of loads across rolls, ensuring better rolling quality and reduction in specific power consumption. The adoption of artificial intelligence technologies, particularly expert systems, and a hybrid model for the surface profile evaluation of rolled bars. Rolling mills are facilities that carry out a series of processes including rolling the billets, blooms, slab and beam blanks extracted from the reheating furnace into the prescribed size and correcting any bending, cutting them into given lengths. With over 30 years experience with hot rolling mills and oems of rolling mill equipment, we have the knowhow to solve your problems and develop new products for you. Ginzburg 2004 metallurgical design of flat rolled steels manufacturing engineering. Rolling process animation rolling mill machine concept. Nov 30, 2016 hot rolling is among the most widely used manufacturing techniques. However, rolling mills are major resource consumers.

In this study, a computeraideddesign cad system to support roll pass and roll profile design of bar rolling, where simple shapes like round and square bars are produced, was developed in order. Roll pass design generally means the cutting of grooves in the roll body through which steel to be rolled is made to pass sequentially to get the desired contour and size. Designing a rolling mill machinery general discussions. Roll pass designs projects typically follow the following timeline. Look for editions of this book at your library, or elsewhere. May 18, 2015 roll pass design in continuous bar mills 1. Effect of pass schedule and groove design on the metal. In the past it used to take weeks to produce coiled strip from iron ore. Rolling mills are facilities that carry out a series of processes including rolling the billets, blooms, slab and beam blanks extracted from the reheating furnace into the prescribed size and correcting any bending, cutting them into given lengths, then piling or bundling as needed for shipment. Number ten of the manufacturing engineering and material processing series. Jing, limei 2001 rolling mill roll design, durham theses, durham university. Basic terminology two facing grooves form a roll pass, or simply a. Production of seamless pipe and tube by hot rolling using rotary piercing mill, plug mill, continuous mill, pilger mill and finishing mills, such as reeling, sizing.

Companion volume to cold rolling of steel by william roberts circa 1978 and number two of the series. Pdf numerical simulation in roll pass design for bar rolling. The design of a leading oval groove for rolling a wire rod is presented as an example. Methodology for calculation of rolling load and forces acting on herringbone gear using hot rolling theory. Only section iron is rolled between theshaped rolls. Therefore, it is important to optimise rpd including the selection of roll. Our plants give you what you need to respond flexibly to market demands. 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. Roll pass design rpd is a principal factor that determines process efficiency, product quality and resource consumption. Fundamentals of rolling presents the theoretical knowledge of longitudinal rolling in a comprehensive procedure. Chapteri matrixbased hot rolling roll design durham etheses.

Roll pass designing pass designing, sizing, a set ofmethods for determining the dimensions, shape, number, andtype of arrangement of rolling mill passes. Whether you have a small, large or medium sized rolling mill for precious metal projects, well talk you through the facts to help you get to grips with rolling sheet metal. Schweitzer rolling technology offers the highest quality roll pass design to ferrous and nonferrous hot rolling mills. 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 77,000 hp, and finally coiling up the lengthened steel sheet for transport to the next process. Thumb rules in rolls pass design fittings from oval to round must be 0. During this time we will cover the basics of metal deformation, the rolling of steel, and roll pass design concepts. Development of detailed groove drawings, roll barrel layouts, roll stress calculations, rolling power, torque and separating force predictions, and roller setup sheets. Rolling is most often, particularly in the case of the conversion of an ingot or continuous casting, performed hot. Angle of bite in degrees with reference to speed of mill 0 0. Basics of rolling a rolling mill consist of several, at least two rolls cylindrical or nea. The other was wusatowski 6 known by his book entitled fundamental of rolling made a. Extend the size range of products already rolled on an existing mill.

Hot rolling mill pass design pdf roll pass design software for roll pass designers, roll pass engineers, used in rolling mills and. Rolling mills are a quick and easy way to transform the metal youre using in your jewellery making. Hot rolling with rough rolls serrations on rolls 27 to 34. In a traditional rolling mill rolling is done in several passes, but in tandem mill there are several stands 2 stands and reductions take place successively. The course will provide the participants with the theoretical knowledge, practical skills, and confidence to deal with daytoday roll pass, quality, and production issues. Rolling mill pass design crusher mills, cone crusher, jaw. Roll pass design methods includes determining the dimensions, shape, number and type of arrangement of rolling mill passes. The aim of this work has been to develop an automatic roll pass design method, capable of minimizing the number of roll passes. Pdf a new method for roll pass design optimisation. This book from the wire rod mill pass design of the basic knowledge. Hot rolling is among the most widely used manufacturing techniques. Computeraided analysis and design of the shape rolling process for.