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. The course will provide the participants with the theoretical knowledge, practical skills, and confidence to deal with daytoday roll pass, quality, and production issues. We pride ourselves for developing the highest quality roll pass design to ferrous and nonferrous hot rolling mills for production of the most challenging sections. Its goal is to achieve uniform deformation throughout the cross section in each reduction. Automated procedure for roll pass design on researchgate, the professional network for scientists. This is the first part of video next is coming tomorrow. 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.
Development of detailed groove drawings, roll barrel layouts, roll stress calculations, rolling power, torque and separating force predictions, and roller setup sheets. Roll pass design in case of ribbed bars with longitudinal slitting is based on. The work diameter of the rolls of the twohigh rolling stand was. This is the first in a threepart webinar series that will highlight the use of mathworks products for modeling and control of a multistage rolling mill process.
Mill optimization of pass schedule crown distribution, roll profile. As regards abnormal rolling conditions which are more or less very normal for rolling mills roll damage often occurs with consequences for the mill. Standards, roll pass design, layout, equipment and guiding system and discuss the. Effect of pass schedule and groove design on the metal.
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. A new technique is developed to analyze the roll pass design of a section rolling mill metal forming nonuniformity and efficiency coefficients which determine the degree of working of a metal microstructure in rolling of section bars are used as performance criteria the system of roll. May 18 2015 roll pass design in continuous bar mills 1 african foundries ltd lagos nigeria presented by rahul kishore 2 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 the normal and average center distance from the center of one roll to. A new technique is developed to analyze the roll pass design of a section rolling mill. A long product rolling mill comprised of equipment for reheating, rolling and cooling. For example, providing a design for 8 mm x 3 rebar on a mill that already rolls 10 mm x 2 rebars. Principles and applications of metal rolling siddhartha ray. Roll pass design is a set of methods for determining the dimensions, shape, number, and type of arrangement of rolling mill passes. Discusses the entire gamut of rolling process and the practices followed in rolling industry and operation and use of various rolling mill equipment and systems provided by publisher. 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.
Pdf roll pass design for hot flat rolling of plain carbon steel tariq. However, rolling mills are major resource consumers. Rolling mill pass design software henan mining heavy machinery co. 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. Roll pass design methods includes determining the dimensions, shape, number and type of arrangement of rolling mill passes. Their mounting and maintenance is also covered in detail. Pass design the leader sections for the multiple slit rolling process, e. Methodology for calculation of rolling load and forces acting on herringbone gear using hot rolling theory.
Uralmashplant is rated among the leaders at the worlds roll market due to renovated production capacities. Angle of bite in degrees with reference to speed of mill. Rolling mill pass design crusher mills, cone crusher. This complete design can be used either as a ready to go solution, as an example or even as a template for future similar projects. This technology as applied to bar mills enables the production of two or more bars from one billet. Roll pass design in continuous bar mills slideshare. As regards abnormal rolling conditions which are more or less very normal for rolling mills roll damage often occurs with consequences for the mill and the rolled product. Roll pass design for hot flat rolling of plain carbon steel. With known reduction between consecutive passes, geometrical dimension of square and diamond passes are computed. Development of a rational roll pass design for a rolling.
Therefore, it is important to optimise rpd including. Hot rolling mill pass design pdf roll pass design software for roll pass designers, roll pass engineers, used in rolling mills and. Introduction for the production of cold rolling steel strips in a yearly production capacity range from 150,000 to 300,000 tons, a reversing cold rolling mill, which. Each cad and any associated text, image or data is in no way sponsored by or affiliated with any company, organization or realworld item, product, or good it may purport to portray. The pass design is created based on your specific mill layout and product requirements. Section area after roll pass v speed of deformation. Presented by ansar hussain rizvi manager production roll pass designing in continuous bar mill. Basics of rolling a rolling mill consist of several, at least two rolls cylindrical or nea. Acharya n k and sengupta d 1983investigation into rolling technology of continuous billet. The slit rolling technology is a combination of special roll pass design with designated guide guiding is our business equipment to shape and longitudinally separate the incoming billet into two or more. The roll grooves in a roller and the roll pass sequence in a hot rolling mill are usually designed based on the type of. Rolling is the process of reducing the thickness or changing the cross section.
May 18, 2015 roll pass design in continuous bar mills 1. Dec 17, 2009 this is the first in a threepart webinar series that will highlight the use of mathworks products for modeling and control of a multistage rolling mill process. Steel sections are generally rolled in several passes, whose number is determined by. 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. 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. Aug 27, 2017 this lecture describes the fundamentals of rolling process including working principle, calculation of various rolling parameters rolling force, power consumption, torque etc. 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. The pass design model was generated on the basis of above two models as well as the rulebased pass design algorithm. Pdf roll pass design for hot flat rolling of plain. Rolling mill pass design crusher mills, cone crusher, jaw. Pdf a new method for roll pass design optimisation sead.
Cold rolling mill, zoommilltm, offgauge, minimization, yield, productivity, labor saving, leader strip, spot welder, evennumbered pass 1. A study on design of slitting passes used for rebar rolling stanislaw turczyn, michal dziedzic, zbigniew kuzminski. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. 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. Simulating a multistage rolling mill process, part 1. Pdf on the optimization procedure of rolling mill design. A tandem mill is a special type of modern rolling mill where rolling is done in one pass. The rolling sequence of a roll pass design is subject to the limitations applied by the rolling load, the. This book is a valuable resource for rolling mill engineers. High mill efficiency can be maintained without regard. Rolling system design is the preparation of a series of roll pockets and draughting.
Used in a combination bar and rod mill, both the morgan rod reducingsizing mill and morgan bar reducingsizing mill are integrated to work with the same singlefamily pass design. Pdf numerical simulation in roll pass design for bar rolling. A determination of the total roll separating force during. A designer of rolling mills will find here the principles for selection and calculation of roll neck bearings. 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 roll grooves in a roller and the roll pass sequence in a hot rolling mill. A model has been used to calculate pass design of a finishing train of a continuous billet mill producing 60 mm square billet from 120 mm square bloom.
Mill, motor and the whole process of roll pass design. Pdf the aim of this work has been to develop an automatic roll pass design method, capable of minimizing the. Watch how an optimum roll pass design leads to the distribution of loads across rolls, ensuring better rolling quality and reduction in. Figure 1 shows a fishbone diagram that classifies the rolling system components for. Complete set of structural design drawings of an industrial building. K4, also the finite element software ansys lsdyna was applied for three passes rolling process simulation to verify the rationality of passes design, and the rolling force curve was simulated. Due to its higher rolling forces, the 6 high ucm mill is the preferred skin pass mill solution to meet the continually increasing demands placed on strip flatness, elongation and roughness, especially for hardmaterial grades. 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.
Pass design and groove details this calculation gives the. Computeraided roll pass design for continuous billet mill. Work rolls for cold rolling mills of 91, 92, 92, 82 steel grades 22 mm. Pdf roll pass design for hot flat rolling of plain carbon.
Turnkey solutions for complete hot rolling mills design process of rolling mills. The pass design is created based on your specific mill layout and product. Pass design of finishing mill group of angle iron and finite. The cross section area is reduced in each pass and form and size of the stock gradually approach to the desired profile. During this time we will cover the basics of metal deformation, the rolling of steel, and roll pass design concepts. Two roll pass sequences were developed by analytical methods and then optimized. Pdf methodology for calculation of rolling load and. The rolling unit accommodates a single pass design from stand 1 through the last stand of the finishing block. Feb 25, 2016 a long product rolling mill comprised of equipment for reheating, rolling and cooling. Hot rolling is among the most widely used manufacturing techniques. If you are interested in our company or products, welcome to visit our company and factories. Newtons substitution method has been used to solve the equation. Pdf a new roll pass design and a new method of rolling in slitting passes of bar with.
This continuous mill consists of 25 stands arranged in 5 groups and is able for rolling. Roll pass design also includes the calculation of pressing forces and their distribution on the roll passes. Fag rolling bearings in rolling mills schaeffler group. The normal and average center distance from the center of one roll to the center of o. Rolling of steel in a modern long product rolling mill. Pdf automated procedure for roll pass design researchgate. The application of finite element simulation to the problem of roll pass design for round bar rolling is considered. Various rolling mill configurations are available to deal with the variety of. In this webinar mathworks engineers demonstrate the benefits of using simulink as a platform for modeling and control system design for a sheetmetal rolling application. Jan 08, 2014 extend the size range of products already rolled on an existing mill.
Steel frame hangar complete design drawings cad dwg,dxf and pdf steel frame hangar complete design drawings. 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. The prediction of the load and torque with different groove designs plays an important role in order to improve the draft during rolling. Since then, rolls for cold rolling mills have become an integral part of uralmashplants assortment. 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. Rollers may be plain or grooved depends upon the shape of rolled product. A tandem cold rolling mill usually consists of three to five stands of rollers, each of which reduces the strip thickness by about 20 to 40% so that the total reduction in one pass may be by a factor ten. Introduction for the production of cold rolling steel strips in a yearly production capacity range from 150,000 to 300,000 tons, a reversing cold rolling mill. Redesigning passes of an existing product to roll the same cross section out of a different material. 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. Using these factors and a basic equation of spread for flat rolling, a governing equation incorporating angle of diamond and reduction in consecutive passes has. During the technology design the rolling separating force is a parameter among many others, which should.