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Indexed by:期刊论文

Date of Publication:2003-11-25

Journal:JOURNAL OF MATERIALS PROCESSING TECHNOLOGY

Included Journals:SCIE、EI

Volume:142

Issue:2

Page Number:526-531

ISSN No.:0924-0136

Key Words:electromagnetic casting; twin-strand; aluminum alloy; microstructure; solidification

Abstract:In order to increase the production efficiency, the twin-strand technique of electromagnetic casting (EMC) in the aluminum industry for the casting of near net-shape products was investigated, and the corresponding apparatus were designed. The distribution of magnetic field inside the series-wound inductor was measured. From this result, the solidification front of melt can be decided. The key parameters such as liquid column, casting speed and flow rate of cooling water were obtained, respectively. The cylindrical ingots with diameter of 240 mm were cast by the twin-strand EMC unit. The metallography of 2024 aluminum alloy was studied and compared with the specimens from direct chill casting (DCC) ingots. The mechanism of grain refinement was discussed by comparing the heat transfer and the solidification characteristics of EMC and DCC. (C) 2003 Elsevier B.V. All rights reserved.