《Table 4 Boundary conditions for flow inlet and outlet》

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《DC铸造法制备包覆铸锭研究（英文）》

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In the present study，AA4045 is selected as a clad-layer because of its excellent brazing performance，and AA3003as a core-layer due to its well corrosion resistance.The chemical composition of the two aluminum alloys is listed in Table 1.The schematic diagram of experiment installation mainly consists of pouring systems，molds，cooling systems and starting head.Initially，the starting head was located in the mold.The core melt was poured into the inner-mold，forming a solid shell（called supporting layer）immediately.Then，the starting head was steadily withdrawn，and the clad melt was fed into the outer-mold at the same time.Through optimizing the casting parameters，the cladding billet，which is in size ofΦ140 mm/Φ110mm×1600 mm with perfect surface quality，was prepared.