高温合金超限构件精密铸造技术及发展趋势

孙宝德, 王俊, 康茂东, 汪东红, 董安平, 王飞, 高海燕, 王国祥, 杜大帆

Investment Casting Technology and Development Trend of Superalloy Ultra Limit Components

SUN Baode, WANG Jun, KANG Maodong, WANG Donghong, DONG Anping, WANG Fei, GAO Haiyan, WANG Guoxiang, DU Dafan

图1 润湿角测量实验和润湿角计算示意图[40]

Fig.1 Image of wetting angle (θ) experiment and schematic of θ measurement[40] (a) alloy drop on the ceramic (b) schematic illustration of the measurement of h and d (θ was calculated by using the geometric parameters h and d of the solidified alloy droplets, where h means the drop height and d is the base diameter of the alloy drop. The relationship expression between h, d, and θ is θ = 2arctan(2h / d). L—apex of the alloy drop, r—base radius of the alloy drop, α = arctan(r / h), β =arctan(h / r))