| 高温再热器异种钢焊接接头失效分析 |
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| 引用本文： | 钟万里,林介东,盘荣旋. 高温再热器异种钢焊接接头失效分析[J]. 江西电力, 2004, 28(3): 26-28 |
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| 作者姓名： | 钟万里 林介东 盘荣旋 |
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| 作者单位： | 广东电力试验研究所,广东,广州,510600 |
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| 摘 要： | 针对华能汕头电厂2号炉高温再热器TP304H-钢102接头断裂失效的情况，进行了化学成份分析、金相检验、扫描电镜观察，发现该焊接接头存在未熔合、夹渣等缺陷，在钢102侧还出现了氧化物沟槽。分析认为此次焊接接头失效的主要原因是由于接头本身存在的焊接缺陷促使了氧化物沟槽的形成，在各种复杂应力的综合作用下，导致了焊接接头的提前失效。
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| 关 键 词： | 电站 锅炉 再热器 异种钢 焊接接头 氧化物沟槽 失效 |
| 文章编号： | 1006-348X(2004)03-26-04 |
Failure Analysis of Special Steel Soldered Joint of High Temperature Reheater |
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| Zhong Wan-Li,Lin Jie-Dong,Pan Rong-Xuan. Failure Analysis of Special Steel Soldered Joint of High Temperature Reheater[J]. Jiangxi Electric Power, 2004, 28(3): 26-28 |
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| Authors: | Zhong Wan-Li Lin Jie-Dong Pan Rong-Xuan |
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| Abstract: | Pointing to the situation of TP304H-stee1 102 joint fracture and failure of Number 2 boiler high temperature reheater in Hua'nen Shantou power plant,This paper finds this welded joint has the unfuzed and slag defect,and occurred oxide channel on the side of steel 102 through chemical composition analysis,metallographic test and scanning electric mirror observation.It considers the primary reason that caused welded joint fault is the joint itself has welded defect that makes the formation of oxide channel,and under the comprehensive function of different complex stress causing welded joint early failure. |
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| Keywords: | power station boiler reheater special steel welded joint oxide channel failure. |
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