单晶空心涡轮叶片凝固过程变形数值模拟研究

弓成美琪; 汪东红; 吴文云; 祝国梁; 疏达; 付超

doi:10.15980/j.tzzz.2022.08.006

研究·计算机应用 | 浏览量 : 0 下载量: 77 CSCD: 0

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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
2022年42卷第8期页码：951-955
纸质出版日期： 2022 ，
DOI： 10.15980/j.tzzz.2022.08.006

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弓成美琪, 汪东红, 吴文云, 等. 单晶空心涡轮叶片凝固过程变形数值模拟研究[J]. 特种铸造及有色合金, 2022,42(8):951-955.

Gong Chengmeiqi, Wang Donghong, Wu Wenyun, et al. Numerical Simulation of Deformation of Single Crystal Hollow Turbine Blade during Solidification Process[J]. Special Casting & Nonferrous Alloys, 2022,42(8):951-955.
弓成美琪, 汪东红, 吴文云, 等. 单晶空心涡轮叶片凝固过程变形数值模拟研究[J]. 特种铸造及有色合金, 2022,42(8):951-955. DOI： 10.15980/j.tzzz.2022.08.006.

Gong Chengmeiqi, Wang Donghong, Wu Wenyun, et al. Numerical Simulation of Deformation of Single Crystal Hollow Turbine Blade during Solidification Process[J]. Special Casting & Nonferrous Alloys, 2022,42(8):951-955. DOI： 10.15980/j.tzzz.2022.08.006.

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1 530℃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。

Abstract

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 1 530 ℃ 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.