Determination of wax pattern die profile for investment casting of turbine blades

作     者：董一巍 卜昆 窦杨青 张定华 DONG Yi-wei;BU Kun;DOU Yang-qing;ZHANG Ding-hua

作者机构：西北工业大学现代设计与集成制造技术教育部重点实验室西安710072 

基　　金：Project (2008ZE53042) supported by National Aerospace Science Foundation of China 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2011年第21卷第2期

页      码：378-387页

摘      要：In order to conform to dimensional tolerances, an efficient numerical method, displacement iterative compensation method, based on finite element methodology （FEM） was presented for the wax pattern die profile design of turbine blades. Casting shrinkages at different positions of the blade which was considered nonlinear thermo-mechanical casting deformations were calculated. Based on the displacement iterative compensation method proposed, the optimized wax pattern die profile can be established. For a A356 alloy blade, substantial reduction in dimensional and shape tolerances was achieved with the developed die shape optimization system. Numerical simulation result obtained by the proposed method shows a good agreement with the result measured experimentally. After four times iterations, compared with the CAD model of turbine blade, the total form error decreases to 0.001 978 mm from the orevious 0.515 815 mm.

主 题 词：turbine blade numerical simulation displacement field wax pattern die profile investment casting 

学科分类：080503[080503] 08[工学] 0805[工学-能源动力学] 0802[工学-机械学] 080201[080201] 

核心收录：

D　O　I：10.1016/S1003-6326(11)60725-5

馆 藏 号：203523121...