导航

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2013, Vol. 34 ›› Issue (1): 181-186.doi: 10.7527/S1000-6893.2013.0021

• Material Engineering and Mechanical Manufacturing • Previous Articles     Next Articles

Size Calculation Method of Ceramic Core Locators for Hollow Turbine Blade Investment Casting Wax Patterns

FENG Wei, WANG Wenhu, WANG Xiaozhong, LUO Jinhu   

  1. Key Laboratory of Contemporary Design and Integrated Manufacturing Technology, Ministry of Education, Northwestern Polytechnical University, Xi’an 710072, China
  • Received:2012-03-01 Revised:2012-03-26 Online:2013-01-25 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)

Abstract:

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.

Key words: hollow turbine blade, wax patterns, ceramic core, locators, model matching, weighting factors, measured data

CLC Number: