单晶空心涡轮叶片凝固过程变形数值模拟研究  

Numerical Simulation of Deformation of Single Crystal Hollow Turbine Blade during Solidification Process

作　　者：弓成美琪 汪东红 吴文云[1] 祝国梁 疏达 付超 Gong Chengmeiqi;Wang Donghong;Wu Wenyun;Zhu Guoliang;Shu Da;Fu Chao(School of Materials Engineering,Shanghai University of Engineering Science;School of Materials Science and Engineering,Shanghai Key Laboratory of Advanced High-Temperature Materials and Precision Forming,Shanghai Jiaotong University;Central Academe,Shanghai Electric Group Co.,Ltd.)

机构地区：[1]上海工程技术大学材料工程学院 [2]上海交通大学材料科学与工程学院上海市先进高温材料及其精密成形重点实验室 [3]上海电气集团股份有限公司中央研究院

出　　处：《特种铸造及有色合金》2022年第8期951-955,共5页Special Casting & Nonferrous Alloys

基　　金：国家科技重大专项基金资助项目(2017-Ⅶ-0008-0102,J2019-Ⅵ-0004-0117);国家自然科学基金资助项目(51821001,52090042,52074183);国家重点研发计划资助项目(2020YFB1710100);浙江省重点研发计划资助项目(2020C01056,2021C01157);长寿命高温材料国家重点实验室开放基金资助项目(DECSKL202109);材料成形与模具技术国家重点实验室开放基金资助项目(P2021-006)。

摘　　要：针对燃气轮机空心涡轮叶片在定向凝固过程中应力、应变复杂,导致铸件尺寸超差的问题,基于ProCAST软件,模拟了大尺寸单晶叶片定向凝固的变形过程,研究了不同工艺下的涡轮叶片应力场与位移场,分析了铸造工艺参数对叶片尺寸变形的影响。结果发现,浇注温度为1530℃和抽拉速率为5 mm/min时,选取的叶片截面变形量最小。叶片变形尺寸预测可为尺寸精度控制提供指导。In view of the complex stress and strain of hollow turbine blade of gas turbine during the directional solidification process,which leads to the casting size out of tolerance,the directional solidification deformation process of large-scale single crystal blade was simulated based on ProCAST software,and the stress field and displacement field of hollow turbine blade under different processes were investigated.The influence of casting process parameters on dimensional deformation was analyzed.The results indicate that with the pouring temperature of 1530℃and the pulling rate of 5 mm/min,the selected section deformation of blade is the smallest.The prediction of blade deformation size can provide guidance for the control of dimensional accuracy.

关 键 词：空心叶片 定向凝固 尺寸变形 数值模拟 

分 类 号：TG249.5[机械工程—精密仪器及机械] TP311[金属学及工艺—铸造] TG146.15[自动化与计算机技术—计算机软件与理论]