( 哈尔滨理工大学 材料科学与工程学院，哈尔滨 150040)
摘 要: 采用金属型铸造并对铜合金材料进行基础试验和计算， 确定了直升机旋翼配重构件的铸造工艺边界参数； 利用CAD对铸造工艺参数及铸造工艺方案进行数值模拟。 结果表明： 经金属型铸造的铜合金密度达到理论密度的99.91%。 经金属模铸造成型的铜合金直升机旋翼配重构件满足设计要求： 即铸造成型后直升机配重构件的质量偏差为±5 g， 曲面变形小于0.2 mm， 最大截面厚度偏差为±0.1 mm。 经铸造后直升机旋翼配重构件的力学性能为： σb=315 MPa， σ0.2=143 MPa， δ=25%， HB=950。
关键字: 铜合金； 直升机旋翼配重构件； 金属型铸造
（ College of Materials Science and Engineering,
Harbin University of Science and Technology, Harbin 150040, China）
Abstract: According to the basic test and calculation for copper alloy by permanent-mold casting, foundry technique parameters of the rotor counterbalance component of helicopter were stated. The foundry technique parameters and programs were numerically simulated through CAD. The results show that the copper alloy density by permanent-mold casting attains 99.91% of theory density. The permanent-mold casting for the rotor counterbalance component of copper alloy can satisfy the requirements of design, i.e. the deviation is ±5 g, the camber distortion is less than 0.20 mm and the maximal section thickness distortion is ±0.10 mm. The mechanical properties of the rotor counterbalance component are: σb=315 MPa, σ0.2=143 MPa, δ=25% and HB=950.
Key words: copper alloy; helicopter rotor counterbalance component; permanent-mold casting
