摘要
针对现有树脂型快速模具存在精度差、导热率低的问题,提出了一种基于低熔点合金铸造成形的空心涡轮叶片熔模铸造蜡型注射用快速模具制作方法;设计了注蜡型腔模的复合结构,型腔模外部是铝合金框,内部是包埋有随形冷却铜管的低熔点合金铸造体;给出了模具内随形冷却管的设计方案。以"模具-蜡型-型芯"系统为分析对象,应用ANSYS软件进行了模具冷却仿真。仿真结果显示本模具的冷却速率与温度均匀性得到显著改善。
Aiming at the low accuracy and heat conductivity of the existing epoxy-type rapid tooling method,a metal-type rapid tooling method based on the low-melting-point alloy is put forward for waxinjection pattern of investment casted turbine blades.The composite structure of the wax-injection cavity mold is designed,outside of which is a aluminum frame,and inside of which is the casted lowmelting-point alloy with an embedded conformal-cooling copper-tube.Moreover,the conformal-cooling pipes in the mold are designed,and the cooling temperature field of the mold is simulated using the ANSYS software,regarding the system of″mold,wax-pattern and core″as the analysis object.The simulation result shows that the cooling rate and the temperature uniformity of the mold are greatly improved.
出处
《南京航空航天大学学报》
EI
CAS
CSCD
北大核心
2016年第1期87-92,共6页
Journal of Nanjing University of Aeronautics & Astronautics
基金
中央高校基本科研业务费专项资金资助项目
关键词
熔模铸造
快速模具
空心涡轮叶片
注蜡模具
随形冷却
investment casting
rapid tooling
hollow turbine blade
wax injection mold
conformal cooling
