Fabrication of High Purity Copper Rod with Unidirectional Solidification Structure by Continuous Casting Using Cooled Mold

摘要

It is generally known that OCC (Ohno Continuous casting process)using heated mold has to be introduced to produce cast rod representing single crystal and uni-directional solidification morphology. However, in the present study, it is expected that unidirectionally solidified high-purity copper rod could be fabricated by optimization of withdrawal speed in typical continuous casting process using cooled mold. This paper discusses the production of small cross section high-purity copper rod by the process of continuous casting, and the effect of varying the parameters of withdrawal speed and casting temperature on the cast grain morphology of the rod and its drawing characteristics to fine wire. The heat transfer within the graphite mold is also discussed with respect to the withdrawal speed and casting temperature.