Casting mold for precious metal seamless tube blank

The utility model provides a casting mould for a precious metal seamless tube blank, which comprises a mould bottom, a central round hole arranged in the middle of the mould bottom, a boss arranged on the mould bottom and concentric with the central round hole, a hollow split core rod arranged in the central round hole of the mould bottom, a core rod lower plug arranged at the bottom of the hollow split core rod, and a core rod upper plug arranged at the top of the hollow split core rod. A sectioning outer die is arranged on the periphery of the boss. The casting mold for the precious metal seamless tube blank is suitable for the precious metal seamless tube blank, does not need to build large-scale equipment and facilities, and is simple in structure, high in precious metal yield, reusable and good in stability. 本实用新型提供一种贵金属无缝管坯的浇铸模具，包括模底，模底中间设置中心圆孔，模底上设置与中心圆孔同心的凸台，模底的中心圆孔内设置空心的分瓣芯棒，空心的分瓣芯棒底部设置芯棒下塞，空心的分瓣芯棒顶部设置芯棒上塞，凸台外周设置分瓣外模。本实用新型的贵金属无缝管坯的浇铸模具，适合贵金属无缝管坯，无需建设大型设备设施，结构简单，贵金属成材率高，可重复利用，稳定性好。