| 常减压蒸馏装置换热器法兰开裂原因分析 |
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| 引用本文： | 张立金,米涛.常减压蒸馏装置换热器法兰开裂原因分析[J].石油化工腐蚀与防护,2011,28(2):52-56. |
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| 作者姓名： | 张立金 米涛 |
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| 作者单位： | 中国石化青岛石油化工有限责任公司,山东青岛,266043 |
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| 摘 要： | 某石化公司在2009年装置检修中发现15台高温换热器的所有接管法兰存在大量长短不等的径向裂纹。经检测发现裂纹分为两种：一种是腐蚀疲劳裂纹；一种是应力腐蚀裂纹。这二种裂纹的性质都属于环境敏感开裂。开裂法兰的化学成分中Cr，Ni和Ti的质量分数低于JB4728—2000《压力容器用不锈铜锻件标准》的下限，同时交货状态下没有...
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| 关 键 词： | 腐蚀疲劳裂纹 应力腐蚀裂纹 固溶处理 稳定化处理 焊后热处理 |
Cause Analysis of Cracking of Heat Exchanger Flanges in Atmospheric-vacuum Distillation Unit |
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| Zhang Lijin,Mi Tao SINOPEC Qingdao Petrochemical Co.,Ltd..Cause Analysis of Cracking of Heat Exchanger Flanges in Atmospheric-vacuum Distillation Unit[J].Petrochemical Corrosion and Protection,2011,28(2):52-56. |
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| Authors: | Zhang Lijin Mi Tao SINOPEC Qingdao Petrochemical Co Ltd |
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| Affiliation: | Zhang Lijin,Mi Tao SINOPEC Qingdao Petrochemical Co.,Ltd.(Qingdao,Shandong 266043) |
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| Abstract: | A large number of crackings of different lengths were found on the flanges of 15 heat exchangers in atmospheric-vacuum distillation unit in the turnaround, 2009. The testing concluded that the crackings were divided into two types： corrosion fatigue crack |
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| Keywords: | corrosion fatigue cracking stress corrosion cracking solution heat treatment stabilization treatment post weld heattreat |
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