摘要
介绍了一种利用电解加工法在航空发动机叶片上加工带肋冷却孔(竹节孔)的工艺方法,对其加工设备和电极制作过程进行详细的描述。实验同时分析了加工参数如加工电压、电解液种类和浓度、加工材料等对冷却孔成形的影响。并结合有限元方法,研究了竹节孔对涡轮叶片冷却效果的改善,对影响传热的参数,如传热系数与努赛尔数Nu进行了分析。
A technique for machining turbulated cooling holes in aero-engine blades using the electrochemical machining method was presented, and their machining devices and cathode preparation processes were described. The effects of such machining parameters as voltage, type and concentration of electrochemical fluid, materials etc on the cooling hole formation were also analyzed. Jointly using the finite element method, the paper studied the improvement of turbulated cooling holes on turbine blade cooling effects and the parameters that affect heat transfer such as heat transfer coefficient, Nusselt Number and so on.
出处
《机械科学与技术》
CSCD
北大核心
2006年第11期1347-1350,共4页
Mechanical Science and Technology for Aerospace Engineering
基金
航空推进技术验证计划(APTD)计划0701子课题资助
关键词
竹节孔
电解加工
航空发动机
turbulated cooling hole
electrochemical machining
aero-engine
