采用热风冲天炉-工频炉双联熔炼，气压保温浇包浇注。
The iron is melted with cupola- mainfrequency furnace duplex process, and pouring was conducted with pneumatic insulated pouring ladle.
得出的优化方案为将原始铸造工艺中的双直浇道结构改为较为简单的单直浇道系统；
The optimum process is that, the double-gating system in original process is replaced with a single-gating system.
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