水平式薄板電磁鋳造とその安定性の解析

抄録

In a horizontal electromagnetic casting ( HEMC ), molten metal which flows out of a nozzle is levitated by imposing direct electric current and direct magnetic flux. Thus, this process makes it possible not only to eliminate the surface defects of ingot caused by contacting with mold wall but also to carry out near net shape casting. The additional advantage of this process is the favorable applicability to the casting of heavy metals at an expense for investment smaller than that for the conventional vertical electromagnetic casting ( VEMC ) already used in the aluminum industry.
In this work, to clarify the fundamental process characteristics of HEMC, experiments for casting thin plates of Bi-Sn-Zn alloy are conducted, and the theoretical analysis on the process stability is developed. The HEMC process promises that the products with the desirable shape of the plate and good surface conditions can be obtained under the stable operating conditions determined by the theoretical analysis.