| 急冷塔上段循环泵轴头断裂失效分析与对策 |
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| 引用本文： | 齐学辉,王晶,茹言. 急冷塔上段循环泵轴头断裂失效分析与对策[J]. 石油化工设计, 2012, 29(2): 59-61,70 |
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| 作者姓名： | 齐学辉 王晶 茹言 |
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| 作者单位： | 中国石油天然气股份有限公司大庆石化分公司,黑龙江大庆,163714 |
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| 摘 要： | 通过失效分析判断P-107B轴头断裂为疲劳断裂。通过宏观观察、金相组织、化学成分分析方法，推断出新轴系材料组织夹杂物较多、测绘加工不不当，致使退刀槽处产生应力集中，形成疲劳裂纹源，最终导致泵轴在退刀槽部位发生疲劳断裂。
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| 关 键 词： | 疲劳断裂 失效分析 金相显微镜 扫描电子显微镜 轴头 退刀槽 最小轴径 |
FRACTURE FAILURE ANALYSIS OF THE SHAFT HEAD OF CYCLE PUMP IN UPPER SECTION OF QUENCH TOWER |
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| Qi Xuehui,Wang Jing,Ru Yan. FRACTURE FAILURE ANALYSIS OF THE SHAFT HEAD OF CYCLE PUMP IN UPPER SECTION OF QUENCH TOWER[J]. Petrochemical Design, 2012, 29(2): 59-61,70 |
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| Authors: | Qi Xuehui Wang Jing Ru Yan |
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| Affiliation: | (PetroChina Daqing Petrochemical Company No.2 Chemical Plant,Daqing,Heilongjiang,163714) |
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| Abstract: | This article analyses and judges the fracture failure of shaft head P-107B as fatigue fracture according to fracture failure analysis.It extrapolates by macroscopic observation,metallographic structure and chemical analysis that the shaft of the pump has fatigue fracture at the position of relief groove because more impurities in the materials of new shafting and improper mapping and machining leads to concentrated stress in relief groove and source of fatigue crack. |
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| Keywords: | Fatigue fracture Failure analysis Metallurgical microscope Scanning electron microscope Shaft head Relief groove Minimum shaft diameter |
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