A Numerical Study of Externally Solidified Products in the Cold Chamber Die Casting Process PDF Download
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Author: Haijing Mao
Publisher:
ISBN:
Category : Die-casting
Languages : en
Pages : 162
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Book Description
Abstract: The fraction of melt which solidifies in the shot sleeve before the metal is injected into the die cavity is referred to as externally solidified products (ESP). ESP may affect the melt fluidity, cavity fill, microstructure and mechanical properties of final castings. The objectives of this research are to conduct simulations to investigate the amount of ESP formed during shot sleeve pouring and shot delay time period, and its distribution in the shot sleeve; to examine what amount of ESP will travel into the die cavity, and the final location of the ESP in the casting; to understand the gains and the limitations of computer modeling for the ESP study; to obtain insights on how to minimize or eliminate cold flakes in castings. The modeling activities in this research are categorized into two related studies. First, a FLOW3D athermal shot sleeve model was developed, which can estimate the ESP formation during the shot sleeve pouring and shot delay time period. The athermal shot sleeve model was developed and verified via an experiment conducted at OSU. Subsequently, the athermal model was applied to Briggs & Stratton's tensile bar casting to examine the ESP formation for this specific die casting process. Second, an isothermal cavity fill modeling using the marker/particle feature was developed to investigate ESP final distribution in the tensile bar cavities.
Author: Haijing Mao
Publisher:
ISBN:
Category : Die-casting
Languages : en
Pages : 162
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Book Description
Abstract: The fraction of melt which solidifies in the shot sleeve before the metal is injected into the die cavity is referred to as externally solidified products (ESP). ESP may affect the melt fluidity, cavity fill, microstructure and mechanical properties of final castings. The objectives of this research are to conduct simulations to investigate the amount of ESP formed during shot sleeve pouring and shot delay time period, and its distribution in the shot sleeve; to examine what amount of ESP will travel into the die cavity, and the final location of the ESP in the casting; to understand the gains and the limitations of computer modeling for the ESP study; to obtain insights on how to minimize or eliminate cold flakes in castings. The modeling activities in this research are categorized into two related studies. First, a FLOW3D athermal shot sleeve model was developed, which can estimate the ESP formation during the shot sleeve pouring and shot delay time period. The athermal shot sleeve model was developed and verified via an experiment conducted at OSU. Subsequently, the athermal model was applied to Briggs & Stratton's tensile bar casting to examine the ESP formation for this specific die casting process. Second, an isothermal cavity fill modeling using the marker/particle feature was developed to investigate ESP final distribution in the tensile bar cavities.
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 780
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Book Description
Author:
Publisher:
ISBN:
Category : Die-casting
Languages : en
Pages : 542
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Book Description
Author: Zak Abdallah
Publisher: BoD – Books on Demand
ISBN: 1839684313
Category : Technology & Engineering
Languages : en
Pages : 167
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Book Description
This book, Casting Processes and Modelling of Metallic Materials, explores the various casting and modelling activities related to metallic alloy systems. The book provides results of research work conducted by experts from all over the globe to add to the research community in the era of the casting process and modelling. The book was edited by two experts in the field of materials science and modelling, Dr. Abdallah and Dr. Aldoumani, whom both have several publications in peer-reviewed journals, worldwide conferences, and scientific books. The book introduces the casting processes and then discusses the various issues and possible solutions. Over the past years, various models have been proposed and utilized to predict the performance of castings. Some of these models proved to be accurate whereas others failed to predict the casting performance. The strength of any predictive tool depends on the employment of physically meaningful parameters that replicate the real-life conditions. This has been illustrated in the current book with such predictive models and finite element (FE) modelling to illustrate the behaviour of castings in real-life conditions.
Author: Jason Rowe
Publisher: Elsevier
ISBN: 0857095463
Category : Technology & Engineering
Languages : en
Pages : 353
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Book Description
The automotive industry is under constant pressure to design vehicles capable of meeting increasingly demanding challenges such as improved fuel economy, enhanced safety and effective emission control. Drawing on the knowledge of leading experts, Advanced materials in automotive engineering explores the development, potential and impact of using such materials.Beginning with a comprehensive introduction to advanced materials for vehicle lightweighting and automotive applications, Advanced materials in automotive engineering goes on to consider nanostructured steel for automotive body structures, aluminium sheet and high pressure die-cast aluminium alloys for automotive applications, magnesium alloys for lightweight powertrains and automotive bodies, and polymer and composite moulding technologies. The final chapters then consider a range of design and manufacturing issues that need to be addressed when working with advanced materials, including the design of advanced automotive body structures and closures, technologies for reducing noise, vibration and harshness, joining systems, and the recycling of automotive materials.With its distinguished editor and international team of contributors, Advanced materials in automotive engineering is an invaluable guide for all those involved in the engineering, design or analysis of motor vehicle bodies and components, as well as all students of automotive design and engineering. - Explores the development, potential and impact of using advanced materials for improved fuel economy, enhanced safety and effective mission control in the automotive industry - Provides a comprehensive introduction to advanced materials for vehicle lightweighting and automotive applications - Covers a range of design ideas and manufacturing issues that arise when working with advanced materials, including technologies for reducing noise, vibration and harshness, and the recycling of automotive materials
Author: Diecasting Development Council (North American Die Casting Association)
Publisher: North Amer Die Casting Assn
ISBN: 9781885271006
Category : Die castings
Languages : en
Pages : 130
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Book Description
Author: Theo Mang
Publisher: Springer
ISBN: 9783642226465
Category : Technology & Engineering
Languages : en
Pages : 0
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Book Description
The importance of lubricants in virtually all fields of the engineering industry is reflected by an increasing scientific research of the basic principles. Energy efficiency and material saving are just two core objectives of the employment of high-tech lubricants. The encyclopedia presents a comprehensive overview of the current state of knowledge in the realm of lubrication. All the aspects of fundamental data, underlying concepts and use cases, as well as theoretical research and last but not least terminology are covered in hundreds of essays and definitions, authored by experts in their respective fields, from industry and academic institutes.
Author: Edward J. Vinarcik
Publisher: John Wiley & Sons
ISBN: 0471275468
Category : Technology & Engineering
Languages : en
Pages : 253
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Book Description
"It's about time that a practicing engineer with casting and academic experience has written a book that provides answers to questions about squeeze casting and semi-solid molding/forming that many engineers and students of casting need answered." —Joseph C. Benedyk, PhD, Consultant and retired technical director, Alcoa High Integrity Die Casting Processes provides a comprehensive look at the concepts behind advanced die casting technologies, including vacuum die casting, squeeze casting, and several variants of semi-solid metalworking. Practical applications for these processes are illustrated in numerous case studies. This single-source reference tool presents the latest material in five sections: Basic concepts of die casting and molten metal flow High integrity die casting processes with case studies Product design considerations Controlling quality and avoiding defects Future advances under development Key coverage includes a survey of liquid metal flow, strategies to overcome the limitations of conventional die casting, and potential defects unique to high integrity die casting processes. Also featured are methods for minimizing porosity, reducing cost by design, practical applied statistical process control techniques, designing for manufacturability, and containment methods for potential processing defects. Several chapters present detailed real-world examples illustrating the broad range of applications possible using high integrity die casting processes. Included with this book is a CD-ROM containing PowerPoint(r) presentations for each chapter. These presentations can be used for training purposes in conjunction with numerous study questions designed to practically apply the content of the book to real-world situations. Selected PowerPoint(r) slides can be used to support engineering proposals, marketing presentations, or customer education seminars. High Integrity Die Casting Processes is a valuable reference for both component producers and component users alike. Process engineers, tool designers, manufacturing engineers, production managers, and machine operators will acquire a better understanding of these advanced die casting processes to optimize manufacturing and improve product quality. Component designers, product engineers, purchasing agents, buyers, supplier quality engineers, and project managers will gain insight into these processes and develop superior products by design.
Author: Lauralice de Campos Franceschini Canale
Publisher: ASM International
ISBN: 1615030980
Category : Technology & Engineering
Languages : en
Pages : 651
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Book Description
Author: John Gilbert Kaufman
Publisher: ASM International
ISBN: 0871708035
Category : Technology & Engineering
Languages : en
Pages : 350
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Book Description
J. G. (Gil) Kaufman is currently president of his consulting company, Kaufman Associates.
