空心涡轮叶片精铸蜡型陶芯定位元件尺寸计算方法
收稿日期: 2012-03-01
修回日期: 2012-03-26
网络出版日期: 2013-01-19
基金资助
国家科技支撑计划(2006BAF04B02);国家"863"计划(2006AA04Z144)
Size Calculation Method of Ceramic Core Locators for Hollow Turbine Blade Investment Casting Wax Patterns
Received date: 2012-03-01
Revised date: 2012-03-26
Online published: 2013-01-19
Supported by
National Key Technology Research and Development Program of China (2006BAF04B02); National High-tech Research and Development Program of China (2006AA04Z144)
冯炜 , 汪文虎 , 王孝忠 , 骆金虎 . 空心涡轮叶片精铸蜡型陶芯定位元件尺寸计算方法[J]. 航空学报, 2013 , 34(1) : 181 -186 . DOI: 10.7527/S1000-6893.2013.0021
This paper proposes a method for size calculation of ceramic core locators based on model matching to cope with the difficulty to precisely quantify the sizes of ceramic core locators for hollow turbine blade investment casting wax patterns. By introducing the wall thickness weighting factors into the matching model, accurate matching between the measurement results and theoretical model is realized. Based on the measured data of matched ceramic cores, a method for size calculation of ceramic core locators is developed. Finally, a batch of ceramic cores with consistent thickness deviation is divided into two groups for use in a contrast experiment. The results show that the proposed method can effectively improve wax pattern wall thickness accuracy. Therefore it provides some guidance for controlling the accuracy of hollow turbine blade.
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