【摘要】 因铜合金螺旋桨铸件一般含有Al、Mn、Ni等元素,熔炼时容易吸气,产生气孔缺陷,其产生的原因主要与合金的性质、熔炼过程、铸型的干燥程度等因素有关。通过一些针对性的防范措施,如包中除气、提高烘型温度等,可有效地减少铜合金铸件气孔缺陷的发生。更多还原

【Abstract】 The gas hole often can be generated in Cu alloy propeller containing Al, Mn,Ni elements due to the formation of absorption-gas during smelting, which is mainly relevant to the alloy composition, smelting process, drying level of mould. The gas-hole in the Cu alloy propeller can be effectively eliminated by some countermeasures, such as degassing in ladle, increasing preheating temperature of mould.更多还原