( 哈爾濱理工大學(xué) 材料科學(xué)與工程學(xué)院，哈爾濱 150040)
摘 要: 采用金屬型鑄造并對銅合金材料進(jìn)行基礎(chǔ)試驗(yàn)和計(jì)算， 確定了直升機(jī)旋翼配重構(gòu)件的鑄造工藝邊界參數(shù)； 利用CAD對鑄造工藝參數(shù)及鑄造工藝方案進(jìn)行數(shù)值模擬。 結(jié)果表明： 經(jīng)金屬型鑄造的銅合金密度達(dá)到理論密度的99.91%。 經(jīng)金屬模鑄造成型的銅合金直升機(jī)旋翼配重構(gòu)件滿足設(shè)計(jì)要求： 即鑄造成型后直升機(jī)配重構(gòu)件的質(zhì)量偏差為±5 g， 曲面變形小于0.2 mm， 最大截面厚度偏差為±0.1 mm。 經(jīng)鑄造后直升機(jī)旋翼配重構(gòu)件的力學(xué)性能為： σb=315 MPa， σ0.2=143 MPa， δ=25%， HB=950。
關(guān)鍵字: 銅合金； 直升機(jī)旋翼配重構(gòu)件； 金屬型鑄造
（ 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
