摘要
对大庆石化公司1Mt/a催化裂化装置反应器20R钢制单级旋风分离器壳体断裂进行了失效分析,并定性的讨论了工作环境下的交变载荷谱叠加到扭应力上对疲劳断裂的影响,这种影响导致△KI(应力场强度因子幅度)达到其临界值(门槛值)△Kth,从而导致裂纹扩展并断裂。
it undertakes inactivating analysis to20R steel-made single stage cyclone shell cracks of Daqing petro chemical company1Mt/a Catalytic Cracking unit reactor,and semi-qualitatively discusses effect to fatigue cracks by repeated load spectrum superim-posed under working conditions onto torsional tension,which arouses△Ki (stress field strength factor amplitude)to reach limit value(threshold valve)△Kth,therefore causes cracks propagation and breakdown.
出处
《炼油与化工》
2003年第1期26-29,34,共5页
Refining And Chemical Industry
关键词
催化裂化
疲劳断裂
应力场强度因子幅度
下门槛值
失效分析
catalytic cracking
fatigue cracks
stress field strength factor amplitude
lower threshold value
inactivating analysis
