文档介绍：基于激光熔覆技术的航空发动机涡轮叶片裂纹修复新工艺
汪定江,夏成宝,王东锋,陈名华
空军第一航空学院河南信阳
( , 464000)
摘要航空发动机涡轮叶片裂纹的修复是飞机修理工作中的难题目前国内对涡轮叶片裂纹的修
: ,
复工艺研究甚少。本文研究了基于激光熔覆技术的航空发动机涡轮叶片裂纹修复新工艺,设计出了涡轮
叶片裂纹的激光修复系统,得出了修复工艺过程和主要工艺参数。应用该工艺修复叶片裂纹,其质量满
足使用需要。
关键词:发动机涡轮叶片;激光技术;裂纹修复
中图分类号文献标志码
:TP 274;TP 399 :B
A New Repair Process of Aero Engine Turbine Lamina Crack based on Laser Cladding Technology
WANG Dingjiang,XIA Chengbao,WANG Dongfeng,CHEN Minghua
(The First Aeronautic Institute of Air Force,Xinyang 464000,China)
Abstract:The repair of aero engine turbine lamina crack was a difficult problem in aero plane present,the re-
search in crack repair of turbine lamina was few in our the paper,the new repair process of aero engine turbine
lamina crack was investigated based on laser cladding technology,the laser repair system was designed,and the repair course
and main technical parameter were result show that the repair quality can meet the demand with the new repair
process.
Key words:Aero engine turbine lamina,Laser technology,Crack repair
航空发动机涡轮叶片的工作条件非常恶劣因护焊等方法来修复叶片裂纹时因为这些方
, (TIG) ,
此采用了性能优异但价格十分昂贵的镍基和钴基高法在修复过程中热输入量较大,热影响区极易出现
热裂纹同时修复过程中引起的收缩变形使叶片的
温合金材材及复杂的制造工艺,因而成本很高,如单,
个均价格可达万多元进口机安装精度难以保证因此这些方法的应用具有很大
1 , , ,
的局限性由于激光熔覆是超快速加热和超快速冷
型的某些叶片更是高达上万美元。然而涡轮叶片由。
却的过程具有对基材的热输入量少热影响区小
于受磨损、冲击、高温燃气和冷热疲劳等作用,易产, 、、
熔覆层组织细小和易于实现自动化等优