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Mathematical Modeling Of Deformation During Hot Rolling
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Book Synopsis Mathematical Modeling of Deformation During Hot Rolling by :
Download or read book Mathematical Modeling of Deformation During Hot Rolling written by and published by . This book was released on 1994 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: The deformation that occurs in the roll bite during the hot rolling of steel, particularly the strain-rate and strain distribution, has been mathematically modeled using finite-element analysis. In this paper three different finite-element models are compared with one another and with industrial measurements. The first model is an Eulerian analysis based on the flow formulation method, while the second utilizes an Updated Lagrangian approach. The third model is based on a commercially available program DEFORM which also utilizes a Lagrangian reference frame. Model predictions of strain and strain-rate distribution, particularly near the surface of the slab, are strongly influenced by the treatment of friction at the boundary and the magnitude of the friction coefficient or shear factor. Roll forces predicted by the model have been compared with industrial rolling loads from a seven-stand hot-strip mill.
Book Synopsis Thermal-Mechanical Modelling of the Flat Rolling Process by : Maciej Pietrzyk
Download or read book Thermal-Mechanical Modelling of the Flat Rolling Process written by Maciej Pietrzyk and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: Flat rolling is considered to be one of the most important and most widely used metal forming processes. This book emphasizes the importance of mathematical simulation of this process in the light of the ever in- creasing need for quality improvements through automation. Mathematical models of the hot, warm and cold rolling processes are discussed, compared and critically evaluated. Engineers in the steel industry will find this book particularly useful in their everyday work.
Book Synopsis Mathematical and Physical Simulation of the Properties of Hot Rolled Products by : Maciej Pietrzyk
Download or read book Mathematical and Physical Simulation of the Properties of Hot Rolled Products written by Maciej Pietrzyk and published by Elsevier. This book was released on 1999-07-05 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this publication is to comprehensively discuss the possibilities of producing steels with pre-determined attributes, demanded by the customer to fit exacting specifications. The information presented in the book has been designed to indicate the reasons for the expenses and to aid in the process of overcoming the difficulties and reducing the costs. In nine detailed chapters, the authors cover topics including: • steel as a major contributor to the economic wealth of a country in terms of its capabilities and production • current concerns of major steel producers • phenomena contributing to the quality of the product • information concerning the boundary conditions of the rolling process and initial conditions, put to use by mathematical models • the solid state incremental approach and flow formulation • parameters and variables - most of which make use of the exponential nature of phenomena that are activated by thermal energy • the application of three dimensional analysis to shape rolling • the evaluation of parameters by a form of inverse analysis to the flat rolling process • knowledge based modeling, using artificial intelligence, expert systems and neural networks They conclude that when either mathematical or physical modeling of the rolling process is considered and the aim is to satisfy the demands for customers, it is possible to produce what the customer wants, exactly.
Book Synopsis Modelling Hot Deformation of Steels by : John G. Lenard
Download or read book Modelling Hot Deformation of Steels written by John G. Lenard and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computer Aided Engineering may be defined as an approach to solving tech nological problems in which most or all of the steps involved are automated through the use of computers, data bases and mathematical models. The success of this ap proach, considering hot forming, is tied very directly to an understanding of material behaviour when subjected to deformation at high temperatures. There is general agreement among engineers that not enough is known about that topic -and this gave the initial impetus for the project described in the present study. The authors secured a research grant from NATO (Special Research Grant #390/83) with a mandate to study the "State-of-the-Art of Controlled Rolling". What follows is the result of that study. There are five chapters in this Monograph. The first one, entitled "State-of-the Art of Controlled Rolling" discusses industrial and laboratory practices and research designed to aid in the development of microalloyed steels of superior quality. Follow ing this is the chapter "Methods of Determining Stress-Strain Curves at Elevated Temperatures". The central concern here is the material's resistance to deformation or in other words, its flow strength, the knowledge of which is absolutely essential for the efficient and economical utilization of the computers controlling the rolling process.
Book Synopsis Primer on Flat Rolling by : John G. Lenard
Download or read book Primer on Flat Rolling written by John G. Lenard and published by Newnes. This book was released on 2013-12-04 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: Primer on Flat Rolling is a fully revised second edition, and the outcome of over three decades of involvement with the rolling process. It is based on the author's yearly set of lectures, delivered to engineers and technologists working in the rolling metal industry. The essential and basic ideas involved in designing and analysis of the rolling process are presented. The book discusses and illustrates in detail the three components of flat rolling: the mill, the rolled metal, and their interface. New processes are also covered; flexible rolling and accumulative roll-bonding. The last chapter contains problems, with solutions that illustrate the complexities of flat rolling. New chapters include a study of hot rolling of aluminum, contributed by Prof. M. Wells; advanced applications of the finite element method, by Dr. Yuli Liu and by Dr. G. Krallics; roll design by Dr. J. B. Tiley and the history of the development of hot rolling mills, written by Mr. D. R. Adair and E. B. Intong. Engineers, technologists and students can all use this book to aid their planning and analysis of flat rolling processes. Provides clear descriptions for engineers and technologists working in steel mills Evaluates the predictive capabilities of mathematical models Assignments and their solutions are included within the text
Book Synopsis Mathematical Modeling of Deforamtion During Hot Rolling by :
Download or read book Mathematical Modeling of Deforamtion During Hot Rolling written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis International Symposium on Mathematical Modelling of Hot Rolling of Steel by : Canadian Institute of Mining and Metallurgy
Download or read book International Symposium on Mathematical Modelling of Hot Rolling of Steel written by Canadian Institute of Mining and Metallurgy and published by . This book was released on 1990 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modeling Steel Deformation in the Semi-Solid State by : Marcin Hojny
Download or read book Modeling Steel Deformation in the Semi-Solid State written by Marcin Hojny and published by Springer. This book was released on 2016-10-04 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses selected aspects of steel-deformation modelling, both at very high temperatures and under the conditions in which the liquid and the solid phases coexist. Steel-deformation modelling with its simultaneous solidification is particularly difficult due to its specificity and complexity. With regard to industrial applications and the development of new, integrated continuous casting and rolling processes, the issues related to modelling are becoming increasingly important. Since the numerous industrial tests that are necessary when traditional methods are used to design the process of continuous casting immediately followed by rolling are expensive, new modelling concepts have been sought. Comprehensive tests were applied to solve problems related to the deformation of steel with a semi-solid core. Physical tests using specialist laboratory instruments (Gleeble 3800thermo-mechanical simulator, NANOTOM 180 N computer tomography, Zwick Z250 testing equipment, 3D blue-light scanning systems), and advanced mathematical modelling (finite element method (FEM), SPH smoothed particle method, cellular automata method CA) were used. This book presents in detail a modelling concept for steel deformation in the semi-solid state based on an approach integrating physical and computer simulations with a full or partial information exchange between these areas.
Book Synopsis Mathematical Modeling of Mean Flow Stress (MFS) During Hot Strip Rolling for HSLA Steels by : Faisal Alghamdi
Download or read book Mathematical Modeling of Mean Flow Stress (MFS) During Hot Strip Rolling for HSLA Steels written by Faisal Alghamdi and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Based on experimental results using hot torsion, the effect of 'time gap', i.e. the time between roughing and finishing in a hot rolling schedule simulation, on mean flow stress (MFS) behavior for high-strength-low-alloyed (HSLA) steels was investigated. Two types of hot deformation were studied: an 'average' schedule with constant interpass time, in which each pass is identical but the temperature is decreasing at a constant rate throughout the rolling schedule simulation. In this type of schedule, two different interpass times of 5 and 30 seconds were used to study the influence of precipitation hardening on the MFS behavior. For the 5 seconds interpass time, where solute drag is main mechanism responsible for preventing recrystallization, a new method was proposed to determine the temperature of no recrystallization (Tnr). The second type is based on an average schedule of 5 seconds interpass time but with incorporating time gaps of 10, 20 and 45 seconds at two different temperature ranges, i.e. above and below the temperature of no recrystallization (Tnr). Through the analysis of MFS vs. 1000/T diagrams, the results indicated phenomena such as static recrystallization and/or precipitation hardening take place during this time gap. A mathematical model for MFS prediction was developed and validated with hot torsion data. The evolution of grain size, precipitate weight fraction and the effect of fractional softening on strain accumulation were also predicted by the model. The model is able to predict the critical strain per pass and therefore the fractional softening associated to dynamic recrystallization. Generally, there is a good agreement between the experimental and predicted mean flow stress over the whole deformation schedule. However, some discrepancy on the MFS values was observed for the first few passes of finishing stage especially when precipitation hardening is more likely to occur. Finally, several points are suggested to accommodate this discrepancy for future work." --
Book Synopsis Numerical Modelling of Material Deformation Processes by : Peter Hartley
Download or read book Numerical Modelling of Material Deformation Processes written by Peter Hartley and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: The principal aim of this text is to encourage the development and application of numerical modelling techniques as an aid to achieving greater efficiency and optimization of metal-forming processes. The contents of this book have therefore been carefully planned to provide both an introduction to the fundamental theory of material deformation simulation, and also a comprehensive survey of the "state-of-the-art" of deformation modelling techniques and their application to specific and industrially relevant processes. To this end, leading international figures in the field of material deformation research have been invited to contribute chapters on subjects on which they are acknowledged experts. The information in this book has been arranged in four parts: Part I deals with plasticity theory, Part II with various numerical modelling techniques, Part III with specific process applications and material phenomena and Part IV with integrated computer systems. The objective of Part I is to establish the underlying theory of material deformation on which the following chapters can build. It begins with a chapter which reviews the basic theories of classical plasticity and describes their analytical representations. The second chapter moves on to look at the theory of deforming materials and shows how these expressions may be used in numerical techniques. The last two chapters of Part I provide a review of isotropic plasticity and anisotropic plasticity.
Book Synopsis Simulation of Material Processing: Theory, Methods and Application by : Ken-ichiro Mori
Download or read book Simulation of Material Processing: Theory, Methods and Application written by Ken-ichiro Mori and published by CRC Press. This book was released on 2001-01-01 with total page 1170 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains about 180 papers including seven keynotes presented at the 7th NUMIFORM Conference. It reflects the state-of-the-art of simulation of industrial forming processes such as rolling, forging, sheet metal forming, injection moulding and casting.
Book Synopsis Mathematical Modeling of Hot Rolling Steel Strip with Special Consideration of a Tandem Mill Linked to a Single-belt Caster by : Shunxin Zhou
Download or read book Mathematical Modeling of Hot Rolling Steel Strip with Special Consideration of a Tandem Mill Linked to a Single-belt Caster written by Shunxin Zhou and published by Cuvillier Verlag. This book was released on 2001 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Theory and Technology of Sheet Rolling by : V.L. Mazur
Download or read book Theory and Technology of Sheet Rolling written by V.L. Mazur and published by CRC Press. This book was released on 2018-10-26 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite significant advances in technology and equipment for rolled steel, the computerization of production processes and the steady increase in production of sheet steel, recent scientific and technological achievements have not been compiled in the special literature and revealed to a wide range of specialists. This book details new approaches, computational techniques, and reliable calculation methods of leaf-rolling modes, forecasting and optimization of the technologies, increasing productivity of the mill and a radical improvement in the quality of steel products.
Book Synopsis Metallurgical Design of Flat Rolled Steels by : Vladimir B. Ginzburg
Download or read book Metallurgical Design of Flat Rolled Steels written by Vladimir B. Ginzburg and published by CRC Press. This book was released on 2020-11-25 with total page 726 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book outlines the basic principles of metallurgical design of flat rolled steels to obtain flat steel products with required metallurgical and mechanical properties. These principles establish the requirements for steel chemical composition and the process parameters, including steelmaking, reheating, hot rolling, annealing and cold rolling. Metallurgical Design of Flat Rolled Steels reviews the current theories and experimental works conducted in this area, and gives a comparative analysis of the obtained results in application to a large variety of steels produced around the world. This guide presents essential material in a fashion that permits rapid application to practical problems while providing the structure and understanding necessary for long-term growth. It first explains how the components fit and work together to make a successful experimental design, then analyzes each component in detail, presenting the various approaches in the form of menus of different strategies and options. Then the text illustrates equations developed by various researchers and compares them in both table and graphic forms. Written in a clear and concise manner, the material is presented using a modular or "building block" approach so readers get to see how the entire structure fits together and learn the essential techniques and terminology necessary to develop more complex designs and analyses.
Book Synopsis Hot Rolling of Steel by : William L. Roberts
Download or read book Hot Rolling of Steel written by William L. Roberts and published by CRC Press. This book was released on 1983-06-21 with total page 1080 pages. Available in PDF, EPUB and Kindle. Book excerpt: Number ten of the Manufacturing Engineering and Material Processing series. Includes one page corrigenda laid-in. 800 illustrations clarifying key points. Thorough account of the hot-rolling process and facilities as well as follow-up treatments given to hot-rolled products. Companion volume to "Cold Rolling of Steel" by William Roberts circa 1978 and number two of the series.
Book Synopsis Magnesium Technology 2013 by : Norbert Hort
Download or read book Magnesium Technology 2013 written by Norbert Hort and published by John Wiley & Sons. This book was released on 2013-02-21 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Magnesium Technology Symposium, the event on which this volume is based, is one of the largest yearly gatherings of magnesium experts in the world. Papers reflect all aspects of the field including primary production to applications, recycling, basic research findings, and industrialization. Readers will find broad coverage of current topics, including alloys and their properties, cast products and processing, wrought products and processing, corrosion and surface finishing, ecology, and more. New and emerging applications in such areas as hydrogen storage are also examined.
Book Synopsis Rolling of Advanced High Strength Steels by : Jingwei Zhao
Download or read book Rolling of Advanced High Strength Steels written by Jingwei Zhao and published by CRC Press. This book was released on 2017-07-12 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced high strength steels (AHSSs) for auto-making are primarily produced by rolling, plus heat treatment technologies if necessary. However, due to the metallurgical complexity of AHSSs, it is impossible to roll all of the AHSS grades in a rolling mill with the same rolling technology. Each of AHSSs has unique applications in vehicles, and specified rolling technologies are required to produce high quality AHSS products where they might be the best employed to meet performance demands of the automotive parts. Such background has prompted the publication of this scholarly book in the area of rolling of AHSSs with a purpose of providing readers with a valuable technical document that can be used in the research and development of AHSSs for automotive and other manufacturing industries. With contributors from USA, Germany, Poland, Italy, Spain, Austria, Australia, China, India and Iran, the book highlights the latest advances in rolling technologies of AHSSs. It focuses on the theory, simulation and practice of the rolling of AHSSs: The book introduces the history, types and advances of AHSSs and their processes; proposes new theory that is applicable to the rolling of AHSSs, presents mathematical and numerical modelling of AHSSs in rolling; covers thermomechanical processing technologies of AHSSs; provides case studies on the rolling practice of the most popular AHSSs and includes other rolling-related technologies of AHSSs. The book will be useful for both theoretical and applied research aimed at AHSSs rolling technologies, and will be a scientific and valuable literature for the metallurgists, engineers, materials scientists, academics and graduate students who are studying and working with AHSSs and their rolling technologies worldwide.
