汽轮机叶片局部激光表面淬火  

Surface Quench-Hardening by Laser of Confined Zones of Steam Turbine Blades

作　　者：姚建华[1] 赖海鸣[2] 

机构地区：[1]浙江工业大学机电工程学院,浙江杭州310014 [2]杭州汽轮机集团公司工艺处,浙江杭州310022

出　　处：《发电设备》2005年第2期101-103,共3页Power Equipment

摘　　要：对汽轮机叶片进气边局部进行激光淬火工艺试验,研究工艺参数、搭接对硬化层深度、硬度及硬度分布的影响,分析了淬火后的组织特征。结果显示:激光淬火可得到深度为0.25～0.45mm的硬化层,平均硬度为HV588,20%的搭接量可满足实际使用要求。Technological tests concerning local quench-hardening of leading edges of steam turbine blades have been conducted, studies on the influence of zone overlapping and that of technological parameters on the hardness, as well as its extent and depth were performed, together with an analysis concerning the material's relevant microstructure. Results show that by laser quenching a hardened layer of 0.25～0.45 mm can be obtained with a mean hardness value of HV 588, 20% overlapping meeting application requirements.

关 键 词：叶片 激光表面强化 工艺 进气边 

分 类 号：TK265[动力工程及工程热物理—动力机械及工程]