Rolling mill pass design pdf

Simulating a multistage rolling mill process, part 1. Redesigning passes of an existing product to roll the same cross section out of a different material. Roll pass design in case of ribbed bars with longitudinal slitting is based on. Pdf a new method for roll pass design optimisation sead. 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. Hot rolling is among the most widely used manufacturing techniques. Work rolls for cold rolling mills of 91, 92, 92, 82 steel grades 22 mm. 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. Cold rolling mill, zoommilltm, offgauge, minimization, yield, productivity, labor saving, leader strip, spot welder, evennumbered pass 1. A determination of the total roll separating force during. Therefore, it is important to optimise rpd including. The cross section area is reduced in each pass and form and size of the stock gradually approach to the desired profile.

Acharya n k and sengupta d 1983investigation into rolling technology of continuous billet. 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. 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. 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. Methodology for calculation of rolling load and forces acting on herringbone gear using hot rolling theory. 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. The rolling sequence of a roll pass design is subject to the limitations applied by the rolling load, the. Roll pass design in continuous bar mills slideshare.

The roll grooves in a roller and the roll pass sequence in a hot rolling mill are usually designed based on the type of. Roll pass designs projects typically follow the following timeline. Watch how an optimum roll pass design leads to the distribution of loads across rolls, ensuring better rolling quality and reduction in. Rolling system design is the preparation of a series of roll pockets and draughting. Rolling is the process of reducing the thickness or changing the cross section. Turnkey solutions for complete hot rolling mills design process of rolling mills. Hot rolling mill pass design pdf roll pass design software for roll pass designers, roll pass engineers, used in rolling mills and. 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. The application of finite element simulation to the problem of roll pass design for round bar rolling is considered.

The pass design is created based on your specific mill layout and product requirements. Hello friends, in this video i have discussed about the roll pass design of rolling mill and its various key features. 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. Complete set of structural design drawings of an industrial building. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. Pass design and groove details this calculation gives the. Pass design of finishing mill group of angle iron and finite. Rolling mill pass design crusher mills, cone crusher. May 18, 2015 roll pass design in continuous bar mills 1. The course will provide the participants with the theoretical knowledge, practical skills, and confidence to deal with daytoday roll pass, quality, and production issues. The prediction of the load and torque with different groove designs plays an important role in order to improve the draft during rolling. Mill, motor and the whole process of roll pass design.

With known reduction between consecutive passes, geometrical dimension of square and diamond passes are computed. The foundation of a successful rolling mill operation is a fine tuned pass design. However, rolling mills are major resource consumers. During this time we will cover the basics of metal deformation, the rolling of steel, and roll pass design concepts. Pdf on the optimization procedure of rolling mill design. 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. 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.

Pdf roll pass design for hot flat rolling of plain. Wicon the versatile tool for long products rolling simulation, optimization, process design and product quality. As regards abnormal rolling conditions which are more or less very normal for rolling mills roll damage often occurs with consequences for the mill. Feb 25, 2016 a long product rolling mill comprised of equipment for reheating, rolling and cooling. Roll pass design is a set of methods for determining the dimensions, shape, number, and type of arrangement of rolling mill passes. Rollers may be plain or grooved depends upon the shape of rolled product. Two roll pass sequences were developed by analytical methods and then optimized. Their mounting and maintenance is also covered in detail.

This technology as applied to bar mills enables the production of two or more bars from one billet. Steel frame hangar complete design drawings cad dwg,dxf and pdf steel frame hangar complete design drawings. A tandem mill is a special type of modern rolling mill where rolling is done in one pass. Rolling of steel in a modern long product rolling mill. Presented by ansar hussain rizvi manager production roll pass designing in continuous bar mill. Roll pass design also includes the calculation of pressing forces and their distribution on the roll passes. 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. Rolling mill pass design software henan mining heavy machinery co.

This book is a valuable resource for rolling mill engineers. Jan 08, 2014 extend the size range of products already rolled on an existing mill. Angle of bite in degrees with reference to speed of mill. 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.

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. This continuous mill consists of 25 stands arranged in 5 groups and is able for rolling. The pass design model was generated on the basis of above two models as well as the rulebased pass design algorithm. 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. Pass design the leader sections for the multiple slit rolling process, e. A designer of rolling mills will find here the principles for selection and calculation of roll neck bearings. 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.

If you are interested in our company or products, welcome to visit our company and factories. 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. 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. 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. Steel sections are generally rolled in several passes, whose number is determined by. The pass design is created based on your specific mill layout and product. A study on design of slitting passes used for rebar rolling stanislaw turczyn, michal dziedzic, zbigniew kuzminski. Standards, roll pass design, layout, equipment and guiding system and discuss the. Uralmashplant is rated among the leaders at the worlds roll market due to renovated production capacities. Basics of rolling a rolling mill consist of several, at least two rolls cylindrical or nea. 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. 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. 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. Section area after roll pass v speed of deformation.

Roll pass design methods includes determining the dimensions, shape, number and type of arrangement of rolling mill passes. The normal and average center distance from the center of one roll to the center of o. 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. Since then, rolls for cold rolling mills have become an integral part of uralmashplants assortment. Roll pass design for hot flat rolling of plain carbon steel. High mill efficiency can be maintained without regard.

A long product rolling mill comprised of equipment for reheating, rolling and cooling. Pdf a new roll pass design and a new method of rolling in slitting passes of bar with. Its goal is to achieve uniform deformation throughout the cross section in each reduction. Roll pass design rpd is a principal factor that determines process efficiency, product quality and resource consumption. Principles and applications of metal rolling siddhartha ray. 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. A new technique is developed to analyze the roll pass design of a section rolling mill. The work diameter of the rolls of the twohigh rolling stand was. Pdf roll pass design for hot flat rolling of plain carbon steel tariq.

Its goal is to achieve uniform deformation throughout. Figure 1 shows a fishbone diagram that classifies the rolling system components for. Effect of pass schedule and groove design on the metal. During the technology design the rolling separating force is a parameter among many others, which should. 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. 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. Newtons substitution method has been used to solve the equation. For example, providing a design for 8 mm x 3 rebar on a mill that already rolls 10 mm x 2 rebars. The rolling unit accommodates a single pass design from stand 1 through the last stand of the finishing block. 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.

Automated procedure for roll pass design on researchgate, the professional network for scientists. Various rolling mill configurations are available to deal with the variety of. Fag rolling bearings in rolling mills schaeffler group. Pdf roll pass design for hot flat rolling of plain carbon. The roll grooves in a roller and the roll pass sequence in a hot rolling mill. Pdf automated procedure for roll pass design researchgate. 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. 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. 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. 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. 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. Computeraided roll pass design for continuous billet mill. Mill optimization of pass schedule crown distribution, roll profile. This is the first part of video next is coming tomorrow.

Development of a rational roll pass design for a rolling. Development of detailed groove drawings, roll barrel layouts, roll stress calculations, rolling power, torque and separating force predictions, and roller setup sheets. 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. Pdf the aim of this work has been to develop an automatic roll pass design method, capable of minimizing the. 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. Rolling mill pass design crusher mills, cone crusher, jaw. Pdf numerical simulation in roll pass design for bar rolling. Pdf methodology for calculation of rolling load and.