| 某电厂TP304不锈钢换热管裂纹分析 |
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| 引用本文： | 高伟,毕英杰.某电厂TP304不锈钢换热管裂纹分析[J].机械工程师,2012(8):182-183. |
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| 作者姓名： | 高伟 毕英杰 |
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| 作者单位： | 1. 哈尔滨动力设备物流有限责任公司,哈尔滨,150046
2. 哈电集团哈尔滨电站阀门有限公司,哈尔滨,150040 |
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| 摘 要： | 某电厂汽轮机汽封加热器的TP304换热管出现裂纹,对已泄漏的换热管取样分析,TP304不锈钢管的化学成分和力学性能都符合技术条件要求,有应力腐蚀倾向,裂纹附近有较大拉应力,裂口表面含有Cl离子和Na离子等腐蚀介质,TP304管是由于应力腐蚀引起的开裂。
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| 关 键 词： | 裂纹 应力腐蚀 开裂 |
Crack Analysis of TP304 Stainless Recuperator Tube in a Power Plant |
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| GAO Wei
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BI Ying-jie.Crack Analysis of TP304 Stainless Recuperator Tube in a Power Plant[J].Mechanical Engineer,2012(8):182-183. |
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| Authors: | GAO Wei BI Ying-jie |
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| Affiliation: | 1.Harbin Power Equipment l,ogistics Company Limited, Harbin 150046, China;2.He Harbin Power Plant Valve Co. Ltd, Harbin 15(1040. China ) |
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| Abstract: | Crack was discovered on TP304 recuperator tube of a turbine steam seal healer in a power plant. Samples were collected and analyzed from these tubes which leakage happened and tile following conclusions were approached： Tbe composition and mechanical properties of TP304 stainless steel tube meet specification. TP304 was subjected to stress corrosion. Near the crack large tensile stress exist; Corrosion medium such as Cl- and Na＋ can be observed on the surface of the crack. Titus the cracking of the tube was cased by stress corrosion. |
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| Keywords: | crack stress corrosion cracking |
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