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Advances in Materials Science and Engineering
Volume 2011 (2011), Article ID 232640, 12 pages
http://dx.doi.org/10.1155/2011/232640
Review Article

The Fabrication of Automobile Components by Applying Electromagnetic Stirring in Semisolid Process

1Precision Manufacturing Systems Division, Pusan National University, Pusan 609-735, Republic of Korea
2School of Mechanical Engineering, Pusan National University, Pusan 609-735, Republic of Korea

Received 1 September 2010; Accepted 19 November 2010

Academic Editor: Shoujin Sun

Copyright © 2011 H. H. Kim and C. G. Kang. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper describes a rheo-forming process for the development of automobile components, such as knuckle, by using rheology material with electromagnetic stirring (EMS) system equipment. The effects of several process and metallurgy parameters such as stirring current, stirring time, pouring temperature, forming pressure, tip velocity, fraction of primary phase, and its morphology and distribution, on the final products are reviewed and discussed. A variety of simulation studies are conducted. In addition, the effect of the vacuum-assisted method on the performance of rheo-forged products is introduced. The EMS is an effective process to improve a feed stock in the rheo-forming process with improved mechanical properties.