| 炼油焦化富气压缩机十字销轴断裂失效检测 |
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| 引用本文： | 管春健,丁明生.炼油焦化富气压缩机十字销轴断裂失效检测[J].石油化工腐蚀与防护,2011,28(3):58-61. |
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| 作者姓名： | 管春健 丁明生 |
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| 作者单位： | 中国石化扬子石油化工股份有限公司,江苏南京,210048 |
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| 摘 要： | 文章对炼油焦化富气压缩机十字销轴断裂失效的原因进行了分析。从宏观形貌分析,存在疲劳裂纹所特有的贝壳状花纹,有铜屑嵌入裂纹内部并在反复挤压过程中形成铜屑层,可明确判断该断口属于疲劳断口;从微观断口形貌分析,断口表面深层部位存在疲劳辉纹,疲劳辉纹间距约在2μm左右,根据疲劳辉纹的间距也可以看出,该螺栓断口属于高周疲劳,十字销轴断口表面附近材料成分分析的Cu元素含量偏高,断口表面含有铜屑嵌入物,而断口表面存在铜屑嵌入物会引起电偶腐蚀,产生腐蚀疲劳,进一步促进疲劳过程的发生和发展。确认十字销轴断裂主要是由于高周疲劳开裂引起的,并提出相关建议。
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| 关 键 词： | 安全阀 弹簧 断裂 失效 |
Testing of Cracking Failure of Crosshead in Rich Gas Compressor |
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| Guan Chunjian,Ding Mingsheng SINOPEC Yangtze Petrochemical Company.Testing of Cracking Failure of Crosshead in Rich Gas Compressor[J].Petrochemical Corrosion and Protection,2011,28(3):58-61. |
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| Authors: | Guan Chunjian Ding Mingsheng SINOPEC Yangtze Petrochemical Company |
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| Affiliation: | Guan Chunjian,Ding Mingsheng SINOPEC Yangtze Petrochemical Company(Nanjing,Jiangsu 210048) |
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| Abstract: | The causes of cracking failure of crosshead of refinery coker＇s rich gas compressor were analyzed. As macro imaging found that there were shell figures unique to fatigue cracking and copper scraps embedded in the cracks forming copper scrap layer by repea |
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| Keywords: | safety valve spring fracture failure |
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