单晶涡轮叶片气膜孔加工技术及其发展

王祯; 杨泽南; 张朕; 张强

doi:10.15980/j.tzzz.2019.08.007

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单晶涡轮叶片气膜孔加工技术及其发展
Progress in Film Hole Processing Method for Single Crystal Turbine Blades of Aeroengine
2019年39卷第8期页码：838-842
纸质出版日期： 2019 ，
DOI： 10.15980/j.tzzz.2019.08.007

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[1]王祯,杨泽南,张朕,张强.单晶涡轮叶片气膜孔加工技术及其发展[J].特种铸造及有色合金,2019,39(08):838-842.

Wang Zhen, Yang Ze′nan, Zhang Zhen, et al. Progress in Film Hole Processing Method for Single Crystal Turbine Blades of Aeroengine[J]. Special Casting & Nonferrous Alloys, 2019,39(8):838-842.
[1]王祯,杨泽南,张朕,张强.单晶涡轮叶片气膜孔加工技术及其发展[J].特种铸造及有色合金,2019,39(08):838-842. DOI： 10.15980/j.tzzz.2019.08.007.

Wang Zhen, Yang Ze′nan, Zhang Zhen, et al. Progress in Film Hole Processing Method for Single Crystal Turbine Blades of Aeroengine[J]. Special Casting & Nonferrous Alloys, 2019,39(8):838-842. DOI： 10.15980/j.tzzz.2019.08.007.

摘要

对比分析了传统电火花、电液束及长脉冲激光加工在航空发动机单晶涡轮叶片气膜孔加工品质、加工精度或加工效率等方面的优势与不足

指出飞秒激光技术可为单晶叶片高品质气膜孔加工提供解决方案。为此

重点分析了飞秒激光"冷加工"特性及机理

并介绍了能量损伤阈值的基本理论及试验测定方法;同时

概述了飞秒激光烧蚀机理的数值计算模型及方法

提出结合双温度场模型的分子动力学方法是数值模拟的发展方向。

Abstract

It was reviewed comparatively for the advantages and disadvantages of traditional electrical discharge machining（EDM）

electron-chemical machining（ECM）and long pulsed laser processing on the hole wall quality

accuracy and efficiency of film cooling hole processing.Femtosecond laser provided a solution for high-quality film cooling hole processing.For femtosecond laser drilling

its "cold processing" characteristics and mechanism were described

and the basic theory of damage threshold and experimental calculation method were analyzed.At the same time

numerical calculation models and methods of femtosecond laser ablation mechanism were summarized.It is pointed out that the molecular dynamics method（MD）combined with the two-temperature model（TTM）is the quite promising for numerical simulation.