摘要
某气撬设备在运往现场后发现进口过滤单元处的16MnIII钢锻管出现开裂.采用宏观形貌观察、金相检验、能谱分析、化学成分分析、硬度测试、断口形貌观察和有限元分析等方法分析了该锻管开裂的原因.结果表明:该锻管的开裂性质为解理脆性断裂;结合有限元模拟和管系实际受力状况推测,运输过程中管系承受过大弯矩是锻管在变壁厚处开裂的主要原因.
Abstract
The 16MnIII steel forging pipe at the inlet filter unit for a skid mounted equipmet was found to be cracked after transporting to the site.The reasons for the cracking of the forging pipe were analyzed by macroscopic morphology observation,metallographic inspection,energy spectrum analysis,chemical composition analysis,hardness test,fracture morphology observation and finite element analysis.The results show that the cracking mechanism of the forging pipe was cleavage brittle fracture.Through the finite element simulation and the actual stress condition of the pipe system,it was concluded that the excessive bending moment of the pipe system during transportation might be the main reason for cracking at the variable wall thickness of the forging pipe.
基金项目
河北省高等学校科学技术研究项目(CXY2024017)
沧州市重点研发"揭榜挂帅"项目(212101005D)
廊坊市科技支撑计划项目(2023011088)
NETL
NSTL
万方数据