理化检验：物理分册2012，Vol.48Issue(4)：258-260,265,4.
蒸发器管子管板液压胀芯轴断裂分析
Fracture Analysis of Hydraulic Expanding Mandrel of Tube Hole and Tube Sheet for Steam Generator
顾佳磊 1纵海 1李晓冬 1王德泰1
作者信息
- 1. 上海电气核电设备有限公司,上海201306
- 折叠
摘要
Abstract
The hydraulic tube-expanding mandrel of tube hole and tube sheet for steam generator in a company fractured repeatedly during the hydraulic pressure expanding process,and fracture reason of the mandrel was studied by instruments of optical microscope,scanning electronic microscope,tensile testing machine and direct reading spectrometer.The results show that stress concentration easily formed at the concave position of thread of the mandrel because fixed tooling was fixed only on one side,which led to low cycle fatigue fracture of the mandrel and shortening its service life.Some suggestion for hydraulic tube-expanding process was proposed finally.关键词
液压胀管工艺/应力集中/低周疲劳断裂Key words
hydraulic tube expanding process/stress concentration/low cycle fatigue fracture分类
能源科技引用本文复制引用
顾佳磊,纵海,李晓冬,王德泰..蒸发器管子管板液压胀芯轴断裂分析[J].理化检验：物理分册,2012,48(4):258-260,265,4.
