汽轮机低压末级叶片防水蚀层激光硬化处理工艺研究  

The Research on the Laser Hardening Technical of the Anti-erosion Layer of the Last-stage Blade of Steam T-urbine

作　　者：龙荷荪 梅林波 沈红卫 王思玉 

机构地区：[1]上海电气集团电站设备有限公司汽轮机厂,200240

出　　处：《装备机械》2009年第3期24-27,共4页The Magazine on Equipment Machinery

摘　　要：采用宽带积分聚焦输出镜,通过对叶片单位面积激光吸收总能量—硬化效果之间关系的试验研究,在激光硬化深度和宽度上取得了突破,获得了合适的激光加热工艺参数,实现了对超超临界汽轮机末级长叶片防水蚀硬化层的激光硬化处理的产品应用。Laser hardening of the last-stage blade of steam turbine has been carried out by using broadband integrating focusing outgoing mirror. The relation between unit area absorbed energy of the blade and hardened effect has been experimental researched. The hardened depth and width of the blade have been improved largely. By obtaining the appropriate laser hardening technical parameters, the laser hardened anti-erosion layer of the last-stage blade of ultra supercritical steam turbine has been finished and applied.

关 键 词：超超临界汽轮机 激光吸收 硬化处理 末级叶片 工艺参数 水蚀 低压 末级长叶片 

分 类 号：TK261[动力工程及工程热物理—动力机械及工程] TL632.1[核科学技术—核技术及应用]