| 加氢装置空冷器出口管线法兰焊缝开裂原因 |
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| 引用本文： | 吴钦辉.加氢装置空冷器出口管线法兰焊缝开裂原因[J].石油化工腐蚀与防护,2002,19(5):29-32. |
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| 作者姓名： | 吴钦辉 |
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| 作者单位： | 福建炼油化工有限公司,福建,泉州,362100 |
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| 摘 要： | 从宏观、微观、工作环境、腐蚀机理、连接结构及选材等方面分析讨论了加氢装置高压反应空冷器出口下法兰管线焊缝发生开裂的原因 ,指出焊缝热影响区硬度偏高、焊接质量较差等原因导致了应力导向氢致开裂。对相应对策也进行了介绍。
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| 关 键 词： | 加氢装置 焊缝开裂 原因分析 对策 |
| 修稿时间： | 2001年11月19 |
Causes of Weld Cracking of Outlet Pipeline Flange of Air Cooler in Hydro-processing Unit |
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| Wu Qinhui.Causes of Weld Cracking of Outlet Pipeline Flange of Air Cooler in Hydro-processing Unit[J].Petrochemical Corrosion and Protection,2002,19(5):29-32. |
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| Authors: | Wu Qinhui |
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| Abstract: | The causes of weld cracking of the outlet pipeline flange of air cooler in high-pressure hydro-processing unit were analyzed in respect of micro and macro structures, service environment, corrosion mechanisms and connection construction. It was found out that the higher hardness of the heat affected area, low-quality welding and residue stress, etc had resulted in stress oriented hydrogen induced cracking (SOHIC). The countermeasures were discussed. |
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| Keywords: | hydro-processing unit weld cracking cause analysis countermeasure |
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