大容量汽轮机末级动叶片防水蚀工艺分析  

Analysis of Anti-corrosion Technology for Last Rotor Blades of Large Capacity Turbines

作　　者：秦人骥 揭念柱 

机构地区：[1]无锡透平叶片有限公司技术中心,无锡214023

出　　处：《发电设备》2009年第3期198-200,共3页Power Equipment

摘　　要：针对汽轮机末级动叶片存在水蚀现象而出现断裂事故,提出了2种防水蚀的工艺技术,并进行了介绍及比较分析,得出新型激光硬化加时效硬化复合工艺具有既能提高叶片材料疲劳强度、抗应力腐蚀能力,又能大幅提高抗水蚀性能。Aiming at the cracking failures encountered by last rotor blades of steam turbines resulted from water corrosion, 2 anti-corrosion technologies are being proposed and compared. Analysis results show that the comprehensive hardening technology by both laser and ageing can not only raise the creep strength and stress corrosion resistance of blade material, but also raise its water corrosion resistance greatly.

关 键 词：汽轮机 动叶片 防水蚀 司太立合金片 激光硬化 纳米涂层 

分 类 号：TK266[动力工程及工程热物理—动力机械及工程]