| 化肥厂一段转化炉上发夹管开裂原因分析 |
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| 引用本文： | 肖向辉.化肥厂一段转化炉上发夹管开裂原因分析[J].石油化工腐蚀与防护,2005,22(2):57-59. |
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| 作者姓名： | 肖向辉 |
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| 作者单位： | 中国石油化工股份有限公司广州分公司,广东,广州,510726 |
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| 摘 要： | 对长期停用的化肥厂一段转化炉上发夹管热影响区焊缝开裂的原因进行了分析,结果表明,裂纹是由晶问腐蚀所诱导的硫化物应力腐蚀开裂所造成的。建议对于长期停用的不锈钢设备,不但对内壁要进行充氮保护,而且对焊缝的外表面也要加强防护,如涂刷涂料并做好防雨水措施。
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| 关 键 词： | 奥氏体不锈钢 转化炉 开裂 |
| 文章编号： | 1007-015X(2005)02-0057-03 |
| 修稿时间： | 2004年6月26日 |
Analysis of Cracking of Hairpin Tubes of 1st-stage Reforming Furnace in Ammonia Plant |
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| Xiao Xianghui.Analysis of Cracking of Hairpin Tubes of 1st-stage Reforming Furnace in Ammonia Plant[J].Petrochemical Corrosion and Protection,2005,22(2):57-59. |
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| Authors: | Xiao Xianghui |
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| Abstract: | The analysis of the causes of cracking of welds in heat affected zone of hairpin pipe in the idle 1 st-stage reforming furnace in a ammonia plant concludes that the cracking is caused by sulfide stress corrosion cracking induced by intergranular corrosion. It suggested that, for the idle stainless steel equipment, the internal wall should be protected by nitrogen while the external welds be protected by effective coatings. In addition, weather protection should be considered. |
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| Keywords: | Keywords: austenitic steel reforming furnace cracking |
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