| 三催气压机入口过滤器短接开裂失效原因分析 |
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| 引用本文： | 付 亮,张国福,刘 丹.三催气压机入口过滤器短接开裂失效原因分析[J].辽宁石油化工大学学报,2017,37(2):48-53. |
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| 作者姓名： | 付 亮 张国福 刘 丹 |
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| 作者单位： | 辽宁石油化工大学机械工程学院,辽宁 抚顺 113001 |
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| 摘 要： | 三催气压机入口过滤器短接在很短的时间内会产生裂纹。对裂纹部位进行了宏观检验、化学成分分析、显像组织分析、扫描电镜分析、力学性能分析。分析结果得知,裂纹产生的主要原因如下:工件在含有H2S的腐蚀介质中,法兰与接管在加工制造过程中产生焊接残余应力,在腐蚀介质与残余应力的共同作用下导致应力腐蚀,从而产生沿晶脆性开裂。针对断裂原因提出了改进方案。
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| 关 键 词： | 气压机 焊缝 应力腐蚀 裂纹 力学性能 |
| 收稿时间： | 2016-05-25 |
Three Reminders Pressure Inlet Filter Short Cracking Failure Analysis |
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| Fu Liang,Zhang Guofu,Liu Dan.Three Reminders Pressure Inlet Filter Short Cracking Failure Analysis[J].Journal of Liaoning University of Petroleum & Chemical Technology,2017,37(2):48-53. |
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| Authors: | Fu Liang Zhang Guofu Liu Dan |
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| Affiliation: | Schoolof Mechanical Engineering,Liaoning Shihua University,Fushun Liaoning 113001,China |
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| Abstract: | Pressure machine inlet filter short piping could produce cracks in a short time. Crack parts of the macroscopic examination, chemical composition analysis, tissue imaging, scanning electron microscopy analysis, and mechanical analysis were studied. The results showed that in the corrosive medium containing H2S, the flange and the nozzle were subjected to welding residual stress during the manufacturing process, and the welding residual stress caused stress corrosion, resulting in cracking along the embrittlement. |
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| Keywords: | Pressure machine Stress corrosion Welding Crack Mechanical properties |
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