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论文类型：期刊论文

发表时间：2003-11-25

发表刊物：JOURNAL OF MATERIALS PROCESSING TECHNOLOGY

收录刊物：SCIE、EI

卷号：142

期号：2

页面范围：526-531

ISSN号：0924-0136

关键字：electromagnetic casting; twin-strand; aluminum alloy; microstructure; solidification

摘要：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.