首页 | 本学科首页   官方微博 | 高级检索  
     

K418高温合金多层多道激光熔覆工艺研究
引用本文:王增平,胡芳友,胡滨,崔爱永.K418高温合金多层多道激光熔覆工艺研究[J].新技术新工艺,2009(4):78-80.
作者姓名:王增平  胡芳友  胡滨  崔爱永
作者单位:1. 海军航空工程学院青岛分院研究生队,山东,青岛,266041
2. 海军航空工程学院青岛分院机械系,山东,青岛,266041
摘    要:为修复某型涡轮导向器损伤叶片,在K418高温合金基底上自配粉末进行了多层多道激光熔覆试验,优化了工艺参数,分析了熔覆层的显微组织,测试了熔覆层的硬度,研究了激光熔覆修复某型涡轮导向器损伤叶片工艺的可行性。结果表明,当激光功率为730W,保护气流1.5L/min,扫描速度为8mm/s,搭接系数为50%时,可获得宏观和微观上均没有缺陷的熔覆层;熔覆层区组织由柱状枝晶与等轴晶组成,工艺参数影响晶粒大小;激光熔覆层平均显微硬度值为415HV;通过优化工艺参数可达到修复和强化叶片的目的。

关 键 词:激光熔覆  熔覆工艺  多层多道  显微组织  硬度

Research on Laser Cladding Superalloy K418 by Multipass and Multi-layer Method
WANG Zengping,HU Fangyou,HU Bin,CUI Aiyong.Research on Laser Cladding Superalloy K418 by Multipass and Multi-layer Method[J].New Technology & New Process,2009(4):78-80.
Authors:WANG Zengping  HU Fangyou  HU Bin  CUI Aiyong
Affiliation:WANG Zengping , HU Fangyou , HU Bin , CUI Aiyong (1 The Troop of Postgraduate, Naval Aeronautical Engineering Institute, Qingdao 266041, China; 2 Department of Engineering, Naval Aeronautical Engineering Institute, Qingdao 266041 ,China)
Abstract:In order to repair one certain type of damaged turbine blade, experiment on the superalloy K418 with manualmixed power by multi path and multi-layer laser cladding method. In this paper, the technological parameters were optimized, the microstructure of the laser cladding was analyzed, and the hardness was tested. The feasibility on the strengthening and repairing of superalloy turbine blades by laser cladding was discussed, the experimental results show that good quality cladding layer could be obtained when the laser power is 730 W, the flux of protect gas is 1.5 L/min, the scan speed is 8 mm/s and the amount of lap is 50% ; the cladding layer is composed by columnar crystals and equiaxed crystals whose dimension is affected by the technological parameters. The average hardness of cladding layer is 415HV; the goal of repairing and strengthening turbine can reached by optimized technological parameters.
Keywords:Laser cladding  Cladding technology  Multi-path and multi-laye  cladding  Microstructure Hardness
本文献已被 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号