| 塔顶冷却器小浮头螺栓断裂失效分析 |
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| 引用本文： | 丁明生,陆晓峰,丁毅.塔顶冷却器小浮头螺栓断裂失效分析[J].石油化工腐蚀与防护,2006,23(6):44-47. |
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| 作者姓名： | 丁明生 陆晓峰 丁毅 |
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| 作者单位： | 1. 中国石化集团扬子石油化工股份有限公司,江苏,南京,210048
2. 南京工业大学,江苏,南京,21009 |
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| 摘 要： | 文章就加氢精制装置气提塔顶冷却器小浮头螺栓断裂失效问题,从宏观和微观断口形貌、材料金相组织及成分等方面对螺栓的断裂失效原因进行了分析,阐述了失效机理,指出螺栓断裂主要是由于SSCC所致,并提出了提高回火程度和严格控制螺栓预紧力的相应防止断裂失效的方法和建议。
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| 关 键 词： | 气提塔 小浮头螺栓 断裂 失效分析 |
| 文章编号： | 1007-015X(2006)06-0044-04 |
| 修稿时间： | 2005年12月29 |
ANALYSIS OF FRACTURE FAILURE OF BOLTS ON FLOATING HEAD OF OVERHEAD COOLERS |
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| Ding Mingsheng,Lu Xiaofeng,Ding Yi.ANALYSIS OF FRACTURE FAILURE OF BOLTS ON FLOATING HEAD OF OVERHEAD COOLERS[J].Petrochemical Corrosion and Protection,2006,23(6):44-47. |
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| Authors: | Ding Mingsheng Lu Xiaofeng Ding Yi |
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| Abstract: | The fracture of bolts on floating head of stripper overhead cooler of hydrotreating unit is analyzed in respect of macro-and micro- fracture forms,material metallographic structure and compositions etc,and failure mechanism is studied.It is concluded that the major culprit of failure is SSCC.Enhanced tempering and strict control of pretightening force are recommended to prevent fracture failure. |
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| Keywords: | stripping tower floating head bolt fracture failure analysis |
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