In order to obtain the solidification crystal structure in the approximate axis direction

a new continuous casting process was developed for the Cu-20 Ag alloy with high Ag alloy content

and the crystallizer with thermal insulation pad was designed. The temperature field on the casting billet under the new crystallizer was performed by finite element simulation and experimental verification. The results reveal that the new crystallizer can realize the concave solid-liquid interface of Cu-20 Ag alloy

and the temperature field distribution of the cast billet after solidification presents the radial temperature gradient

which is gradually decreased along the length of the rod until the radial temperature gradient is close to zero. At this time

columnar crystal almost along axial is easy to form

and the simulation results are consistent with the experiment ones.