某氢气往复式压缩机连接螺栓的断裂原因
Fracture Cause of Connecting Bolts in a Hydrogen Reciprocating Compressor
摘 要
某氢气往复式压缩机在正常工作一段时间后，其连接螺栓发生断裂。通过断口宏观与微观形貌观察、化学成分分析、显微组织观察、力学性能测试等方法，对该连接螺栓的断裂原因进行分析。结果表明：该连接螺栓的断裂性质为低应力高周疲劳断裂。在交变载荷作用下，微裂纹在螺栓螺纹根部高应力集中区域萌生；螺栓热处理不当导致形成回火索氏体、上贝氏体和铁素体的混合组织，造成螺栓的强度和硬度偏低，并加速疲劳裂纹扩展。最终连接螺栓发生疲劳断裂。
疲劳断裂
应力集中
回火索氏体
力学性能
connecting bolt
fatigue fracture
stress concentration
tempered sorbite
mechanical property
Abstract
The connecting bolts in a hydrogen reciprocating compressor were ruptured after woking normally for a period of time. The fracture cause of the bolts was investigated by fracture macro- and micro-morphology observation, chemical composition analysis, microstructure observation and mechanical property tests. The results show that the fracture mode of the bolts was low stress high cycle fatigue fracture. Under alternating stresses, some microcracks originated from the high stress concentration position at the root of the screw thread of the bolt. Improper heat treatment resulted in the mixed structure of tempered sorbite, upper bainite and ferrite, leading to the decrease of the strength and hardness of the bolts and the acceleration of fatigue crack propagation. Fianlly the fatigue fracture of connecting bolts occurred.
中图分类号 TH457 DOI 10.11973/jxgccl202101017
所属栏目 失效分析
基金项目
收稿日期 2019/10/14
修改稿日期 2020/7/29
网络出版日期
作者单位点击查看
备注陆颜(1996-),女,江苏镇江人,硕士研究生
引用该论文: LU Yan,TAN Jinzhu,LI Yang,WANG Chao,LUO Shenghua. Fracture Cause of Connecting Bolts in a Hydrogen Reciprocating Compressor[J]. Materials for mechancial engineering, 2021, 45(1): 105～108
陆颜,谈金祝,李洋,王超,罗盛华. 某氢气往复式压缩机连接螺栓的断裂原因[J]. 机械工程材料, 2021, 45(1): 105～108
共有人对该论文发表了看法，其中：
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】孔浩源. 往复式压缩机活塞杆断裂失效分析及疲劳寿命估算[D]. 济南:山东大学, 2012. KONG H Y. Fracture failure analysis and fatigue life estimation of the reciprocating compressor piston rod[D]. Jinan:Shandong University, 2012.
【2】刘畅. 往复式压缩机缸头螺栓失效原因分析[J]. 炼油与化工, 2019, 30(4):40-41. LIU C.Failure analysis of cylinder head bolt of reciprocating compressor[J]. Refining and Chemical Industry, 2019, 30(4):40-41.
【3】杨林. 活塞压缩机缸体连接螺栓断裂故障处理[J]. 压缩机技术, 2018(4):50-53. YANG L.Treatment for the fault occurred in piston compressor cylinder bolts[J].Compressor Technology, 2018(4):50-53.
【4】薛义. 某压缩机螺栓连接断裂失效分析[D]. 上海:华东理工大学,2015. XUE Y.Fracture failure analysis of a compressor bolt connection[D]. Shanghai:East China University of Science and Technology, 2015.
【5】王嘉畅, 冯文冲, 张海兵. 高强度螺栓断裂原因分析[J]. 金属加工(热加工), 2019(10):9-11. WANG J C, FENG W C, ZHANG H B.Analysis on cracking failure of high strength bolt[J].MW Metal Forming, 2019(10):9-11.
【6】陶亦亦,潘玉娴. 工程材料与机械制造基础[M].北京:化学工业出版社,2008. TAO Y Y, PAN Y X.Engineering materials and fundamental of mechanical manufacture[M]. Beijing:Chemical Industry Press, 2008.
【7】马小明,许锋. 氢气压缩机活塞杆断裂失效分析[J]. 机械工程材料, 2013, 37(7):111-114. MA X M, XU F.Failure analysis of piston rod in a hydrogen compressor[J]. Materials for Mechanical Engineering, 2013, 37(7):111-114.
【2】刘畅. 往复式压缩机缸头螺栓失效原因分析[J]. 炼油与化工, 2019, 30(4):40-41. LIU C.Failure analysis of cylinder head bolt of reciprocating compressor[J]. Refining and Chemical Industry, 2019, 30(4):40-41.
【3】杨林. 活塞压缩机缸体连接螺栓断裂故障处理[J]. 压缩机技术, 2018(4):50-53. YANG L.Treatment for the fault occurred in piston compressor cylinder bolts[J].Compressor Technology, 2018(4):50-53.
【4】薛义. 某压缩机螺栓连接断裂失效分析[D]. 上海:华东理工大学,2015. XUE Y.Fracture failure analysis of a compressor bolt connection[D]. Shanghai:East China University of Science and Technology, 2015.
【5】王嘉畅, 冯文冲, 张海兵. 高强度螺栓断裂原因分析[J]. 金属加工(热加工), 2019(10):9-11. WANG J C, FENG W C, ZHANG H B.Analysis on cracking failure of high strength bolt[J].MW Metal Forming, 2019(10):9-11.
【6】陶亦亦,潘玉娴. 工程材料与机械制造基础[M].北京:化学工业出版社,2008. TAO Y Y, PAN Y X.Engineering materials and fundamental of mechanical manufacture[M]. Beijing:Chemical Industry Press, 2008.
【7】马小明,许锋. 氢气压缩机活塞杆断裂失效分析[J]. 机械工程材料, 2013, 37(7):111-114. MA X M, XU F.Failure analysis of piston rod in a hydrogen compressor[J]. Materials for Mechanical Engineering, 2013, 37(7):111-114.
相关信息
