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Indexed by:会议论文

Date of Publication:2002-01-01

Included Journals:EI

Volume:15

Issue:4 SPEC.

Page Number:371-375

Abstract:In order to increase the casting speed of semi-continuous casting of aluminum billet, a mold with slits and external cooling water channels was designed. This cooling system can supply enough cooling strength and keep the cooling rate readily. By imposing a high frequency magnetic field, the surface quality and microstructure of the billets are improved, especially at a higher casting speed. The magnetic field has ideal profile inside the mold via the slits, which results in an easier controlling of meniscus level during the casting process and supports a possibility of higher casting speed with the effect of the external cooling water. Besides bringing the good surface quality, uniform structure, and fine grain; the casting defects such as segregation and porosity etc. also could be reduced or eliminated by imposing an electromagnetic field.