Franklin Precision Castings
Simon Kadula | Dreamstime
Messe Dusseldorf
ABP Induction
Jonathan Weiss | Dreamstime

Examining Semi-Solid Aluminum Casting and the SEED Process

Aug. 12, 2015
Côté, Pucella, and Midson explain how the SEED represents a new possibility for producing thin-walled castings with excellent mechanical properties.

Despite significant technical and economic advantages semi-solid metalcasting (SSM) has never advanced to become the major metalcasting process anticipated by so many early investigators. Still, there are still several positive indicators of the value of semi-solid casting for aluminum alloys, as detailed by Pascal Côté, Giovanni Pucella, and Steve Midson in their report, The Benefits of Semi-Solid Casting for Aluminum Alloys.

Proceeding from the proposition that there are multiple advantages to producing castings in uncoated metal molds (including surface finishes, close dimensional tolerances, and fine-scale microstructures, due to rapid heat extraction) they address the challenge of high-cooling rates and solidification irregularities with existing semi-solid metal casting technologies.

The Swirled Enthalpy Equilibration Device (SEED) process they introduce represent a new possibility for high-volume, high-productivity, thin-walled casting production. It is a technically advanced and economically successful rheocasting processes that minimize turbulence during the production of the semi-solid slurry — making it effective for producing high quality castings. It optimizes metal quality during both the production of the slurry and during the casting process itself, and may represent the future for semi-solid casting production.

About the Author

Ellen Baran | Digital Production Specialist

Ellen Baran has been involved in the digital space for over 12 years.  Specializing in user engagement, Ellen works closely with Robert Brooks, Editor-in-Chief, to develop unique and compelling content for users.

Ellen graduated from Columbia College in Chicago, IL majoring in Communications.

About the Author

Robert Brooks | Content Director

Robert Brooks has been a business-to-business reporter, writer, editor, and columnist for more than 20 years, specializing in the primary metal and basic manufacturing industries. His work has covered a wide range of topics, including process technology, resource development, material selection, product design, workforce development, and industrial market strategies, among others. Currently, he specializes in subjects related to metal component and product design, development, and manufacturing — including castings, forgings, machined parts, and fabrications.

Brooks is a graduate of Kenyon College (B.A. English, Political Science) and Emory University (M.A. English.)