Abstract
Using a heated double-channel mould, cored rods with pure tin as a clad material and Sn-Bi, Sn-Pb, and Sn-Zn eutectic alloys as core materials have been continuously cast. With precise control of casting variables, cored rods were successfully produced with a unidirectional structure for both core and clad materials. The effects of casting speed and mould exit temperature on cast structure were examined in an attempt to obtain an understanding of this new casting process. It was found that the dissolution of clad material occurs during casting, and the dissolution process is rapid and sensitive to the process variables. Excess dissolution of clad material leads to metal breakout. In order to reduce the dissolution, lower mould exit temperatures with faster casting speeds should be employed.
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