Magnesium Injection Molding

ISBN-13: 9781441944368 / Angielski / Miękka / 2010 / 592 str.

Frank Czerwinski

Opis

The continuous quest for weight reduction, especially in ground and air transportation, has catalyzed the de velopment of light metals and alloys. In this search, particular attention is being paid to magnesium, used at present in a diversity of applications, each one exploring a specific range of unique properties. As a result, the magnesium consumption by many important market sectors is growing at an impressive rate exceeding 10% per year. In parallel with the alloy development the search continues for new techniques of converting magnesium into useful products in a safe and effective manner. Magnesium injection molding, commercialized in recent years, represents a modern technology that is clean and safe for workers as well as friendly for an environment. Extensive research, conducted at both the industrial and university levels, indicates that the technique exceeded its initial expectations. While combining key features of a number of processing techniques, magnesium injection molding is emerging as a universal technology, capable of implementing many conventional and novel processing routes. The routes are based on both the semisolid slurry and fully molten alloy with tightly controlled temperature. Despite well-advanced practice, the critical breakthrough is still hindered by slow progress in understanding key mechanisms, controlling the process at stages of slurry preparation and component forming.

Recenzje

Aus den Rezensionen:

"... Das Buch ... bildet das heute verfügbare theoretische und praktische Wissen über diese faszinierende Technik interdisziplinär und umfassend ab. Der Inhalt reicht von den Grundlagen der Magnesiumlegierungen und ihrer Phasenübergänge über die Anforderungen an Spritzgießanlagen bis zu elementaren Prozessdetails und Bauteileigenschaften." (in: Kunststoffe, 2008, Issue.12, S.53)

Spis treści

Erratum.- Magnesium and Its Alloys.- Semisolid Processing—Origin of Magnesium Molding.- Basic and Auxiliary Hardware.- Thermal and Corrosive Aspects of Processing Molten Magnesium.- Process Theory and Practice.- Feedstock Selection.- Oxidation Behavior of the Feedstock.- Melting Behavior of the Feedstock.- Alloy Transformations During Molding.- Microstructure—Property Relationship for Molded Alloys.- Semisolid Extrusion Molding.- Near-Liquidus Molding.- Alloy and Composite Generation in a Semisolid State.- Molding Creep-Resistant Alloys.

O autorze

Dr. Czerwinski did 2 years of postdoctoral study at McGill University and 2 years at McMaster University.  He has a PhD in Metallurgical Engineering from McGill University, and  a PhD in Materials Engineering from the University of Mining and Metallurgy, Cracow, Poland. 

He was a University Professor of Materials and Metallurgical Engineering and a faculty member for 19 years.  Dr. Czerwinski has been a manager and principal scientist of numerous research projects sponsored by the National Research Council of Canada, universities and industry.  At present, he is a Chief Metallurgist involved in a development of the injection molding machinery and researching metallurgical aspects of semisolid injection molding of metallic alloys.

He is the author of a monograph in surface engineering; and the author and co-author of over 140 reserch papers in peer-review scientific journals and conference proceedings.

Dr.Czerwinski is affiliated with: Professional Engineergs of Ontario, ASM International and The Minerals, Metals and Materials Society.

Blurb

Injection molding of metallic alloys is a modern and environment-friendly technology with universal features, capable of implementing many conventional and novel processing methods based on semisolid and liquid routes. After its application to magnesium and recent commercialization, it is used to manufacture millions of light-weight, fully-recyclable components for various markets, including consumer electronics housings, automotive parts, sporting goods, household devices and office equipment.

Magnesium Injection Molding takes the mystery out of this technique and covers both the scientific background and the technological aspects as they are understood at present. Fundamentals of magnesium alloys, semisolid state metallurgy and injection molding hardware are accompanied by intricate details of processing, phase transformations and properties of final structures with broad references to die casting and plastics injection. Also included are introductory topics which will allow beginners to understand the basics of magnesium molding and gradually work their way into this fascinating area of metal processing. For subjects where no literature data exist, pioneering research was conducted to provide scientifically credible explanations. As a unique blend of theory and industrial practice, this work represents a single source of interdisciplinary information at a level accessible to both the scientists and engineers from academia and industry.