Mold filling characteristics of Al alloy in vacuum lost foam low pressure casting (VLFLPC) under counter gravity condition were examined.

试验研究了反重力浇注条件下，铝合金消失模真空低压铸造的充型流动特性。

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Through analyzing the density of vacuum counter-pressure casting samples under different keeping pressures, their solidification feeding behavior and mathematical model were discussed.

对不同保压压力下真空差压铸造试样致密度进行分析，探讨真空差压铸造工艺的凝固补缩特性，建立凝固补缩过程的数学模型。

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The findings indicated that under non-vacuum condition, repeated casted nickel-chrome alloy has a decreased corrosion resistance and increased nickel ions with the increase of casting times.

提示非真空条件下反复熔铸镍铬烤瓷合金的耐腐蚀性能下降，随着熔铸次数的增加，镍离子的析出明显增多。

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