机械振动对消失模型壳铸造镁合金充型能力的影响

发布时间：2018-07-11 15:36

  本文选题：机械振动 + 消失模型壳铸造　； 参考：《特种铸造及有色合金》2015年01期

【摘要】：在AZ91D镁合金消失模型壳铸造的浇注过程中施加垂直方向的机械振动,研究了不同的振动频率和振幅对消失模型壳铸造充型能力的影响,并在不同浇注温度下与未振动条件进行了对比分析。通过对不同参数下获得的AZ91D试样的长度和面积进行分析,探讨了机械振动对消失模型壳铸造镁合金充型能力的影响。结果表明,浇注温度不同的镁合金在机械振动下相比于未振动时充型能力得到显著提高,且浇注温度越低,充型能力的提高幅度越大。在浇注温度为690℃时,充型长度提高了75.6%,充型面积提高了82.3%。随着振动频率和振幅的增加,AZ91D镁合金的充型能力逐渐提高,当振动频率为100Hz,振幅为1.0mm时,消失模型壳铸造AZ91D镁合金的充型能力较为理想。
[Abstract]:The vertical mechanical vibration of AZ91D magnesium alloy lost model shell casting was carried out. The effects of vibration frequency and amplitude on mold filling capacity of lost model shell casting were studied. At different pouring temperature and no vibration conditions were compared and analyzed. By analyzing the length and area of AZ91D sample obtained under different parameters, the effect of mechanical vibration on the mold filling capacity of magnesium alloy cast in vanishing mold shell was discussed. The results show that the filling capacity of magnesium alloy with different pouring temperature under mechanical vibration is significantly higher than that without vibration, and the lower the pouring temperature, the greater the increase of mold filling capacity. When the pouring temperature is 690 鈩，

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