| 联箱管座角焊缝裂纹原因分析 |
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| 引用本文： | 胡新芳,岳增武,薛琦,刘青.联箱管座角焊缝裂纹原因分析[J].山东电力技术,2008(5):17-20. |
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| 作者姓名： | 胡新芳 岳增武 薛琦 刘青 |
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| 作者单位： | [1]山东电力研究院,山东济南250002 [2]山东济宁运河发电有限公司,山东济宁272003 |
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| 摘 要： | 电厂低温过热器入口联箱管座角焊缝在管端熔合区处产生裂纹。通过应力分析、断口显微分析和焊缝及热影响区的金相分析,认为焊接工艺不当和管系结构设计不合理造成的应力集中是裂纹产生的主要原因。
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| 关 键 词： | 角焊缝 焊接工艺 应力集中 |
Analysis on Cracks of Stud Welding Seam on Header of Low Temperature Superheater |
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| Abstract: | The stud welding seam on header of low temperature superheater cracked at fusion zone of the tube. Through stress analysis and microstructure analysis of fracture and metallographic analysis of the welded joint and heat-affected zone, it pointed that the main reason of the crack was stress concentration affected by the irrational welding technique and design of the tube structure. |
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| Keywords: | stud welding seam welding technique stress concentration |
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