| 2起震击器花键心轴断裂原因分析及改进措施 |
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| 引用本文： | 潘志勇,刘永刚,王新虎,冯耀荣,徐婷.2起震击器花键心轴断裂原因分析及改进措施[J].石油矿场机械,2009,38(7):67-70. |
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| 作者姓名： | 潘志勇 刘永刚 王新虎 冯耀荣 徐婷 |
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| 作者单位： | 中国石油天然气集团公司管材研究所石油管工程重点实验室,西安,710065 |
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| 摘 要： | 通过对2件断裂的φ203．2mm（8英寸）随钻震击器花键心轴进行宏观分析、断口微观分析、材质理化性能检验（包括化学成分、力学性能、金相组织）等试验分析研究，结合随钻震击器花键心轴的使用工况和受载特点，综合分析了花键心轴发生断裂失效的原因是由于材料组织不良和结构上的应力集中导致的疲劳断裂，并提出了解决方案和建议。
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| 关 键 词： | 随钻震击器 花键心轴 断裂 失效分析 |
Analysis on the Fracture of Two Drilling Jar's Splined Mandrel and Improvement Measures |
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| PAN Zhi-yong,LIU Yong-gang,WANG Xin-hu,FENG Yao-rong,XU Ting.Analysis on the Fracture of Two Drilling Jar's Splined Mandrel and Improvement Measures[J].Oil Field Equipment,2009,38(7):67-70. |
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| Authors: | PAN Zhi-yong LIU Yong-gang WANG Xin-hu FENG Yao-rong XU Ting |
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| Affiliation: | (Key Laboratory for Oil Tubular Goods Engineering, Tubular Goods Research of CNPC, Xi＇ an 710065 ,China) |
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| Abstract: | The systematic fracture analysis was done for two Φ203.2 mm(8") drilling jars' splined mandrels. The fractures were checked and analyzed on macro and microscope. The material's crostructure) were checked too. Base on the drilling jar' working conditions and loading charac-teristics and systematic analysis and checking conclusions the conclusions can be got that the two drilling jars' splined mandrels were broke because of fatigue induced by not good material struc-ture and stress concentration in jars' structure. The solutions and suggestions were made at the end of this passage. |
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| Keywords: | drilling jar splined mandrel fracture failure analysis |
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