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요약정보
给水泵汽轮机动叶片断裂失效分析 / Fracture Failure Analysis of Feed Water Pump Turbine Blade
Resource Type
Academic Journal
Authors
张强
;
王占文
;
方旭
;
丁俊
;
李云飞
;
ZHANG Qiang
;
WANG Zhanwen
;
FANG Xu
;
DING Jun
;
LI Yunfei
Source
河北电力技术 / Hebei Electric Power
. 41(1):88-91
Subject
给水泵汽轮机;动叶片;断裂;过渡面:疲劳裂纹
Language
Chinese
ISSN
1001-9898
Online Access
Find it @ DONGA
초록
针对某发电机组给水泵汽轮机动叶片断裂问题,通过宏观形貌与扫描电镜分析、化学成分分析、金相检查、力学性能试验等进行失效原因分析,发现出汽侧叶根与叶身形线间过渡处的加工质量欠佳,存在机加工痕迹较粗糙及圆弧半径偏小,断面存在明显的疲劳裂纹,认为叶片断裂属于高周疲劳断裂.提出更换现有批次叶片、优化出汽侧叶根与叶身形线间过渡处的设计和采用圆滑过渡等处理措施,并建议对重要辅机得主要部件重点监控、监造和选择优质供应商.
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