| 超超临界机组水冷壁向火侧裂纹和高温腐蚀原因分析 |
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| 引用本文： | 蒙殿武,沈全宏,王力强,董志红,董志红.超超临界机组水冷壁向火侧裂纹和高温腐蚀原因分析[J].成都大学学报(自然科学版),2014(1):64-67. |
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| 作者姓名： | 蒙殿武 沈全宏 王力强 董志红 董志红 |
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| 作者单位： | [1]江苏大唐国际吕四港发电有限责任公司,江苏启东226246 [2]成都大学工业制造学院,四川成都610106 |
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| 摘 要： | 15CrMo合金管在锅炉水循环中常发生管壁开裂、腐蚀等现象.对使用2年的15CrMo合金管在锅炉上产生的裂纹进行分析.结果表明,管壁开裂均为单一裂纹,主要分布在水冷壁高温焊接区,向火面腐蚀较严重,且组织已球化,表现为高温腐蚀,由于焊接区应力集中,高温下易产生疲劳裂纹.
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| 关 键 词： | CrMo合金管 高压锅炉 裂纹 腐蚀 |
Fireside Fracture and High Temperature Corrosion Cause Analysis of Water Cooled Wall of Ultra Supercritical Generating Set |
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| Institution: | MENG Dianwu, SHEN Quanhong ( 1 .Jiangsu Datang International Lyusigang Power Generation Co. ,Ltd., Qidong 226246, China; 2. School of Industrial Manufacturing, Chengdu University, Chengtlu 610106, China) |
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| Abstract: | Under water circulation of boiler, the fracture, corrosion,ete, of 15CrMo alloy steel pipes often occur. This paper analyzes the fracture of a 2-year 15CrMo alloy steel pipe in the boiler. The analysis re- sults indicate that pipe wall cracks are single cracks, which are mainly distributed in the high temperature welding areas. On the fireside, corrosion is more serious and organization structure becomes balled, which is regarded as high temperature corrosion. Fatigued cracks unde： the high temperature occur due to stress con- centration in the welding areas. |
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| Keywords: | 15CrMo alloy steel pipe high pressure boiler fracture corrosion |
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