试验结果表明，铸铁件流动前沿不仅存在明显的气隙，而且采用聚苯乙烯模样材料，负压下浇注时，其气隙压力低于1个大气压。
The results indicated that there exists obvious gas gap in molten iron flowing front, and the pressure in gas gap with EPS pattern during vacuum pouring is less than 1 a tm.
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.
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.
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