摘要
采用有限元分析工具ANSYS,利用不同的表面传热系数,进行了热轧板带钢在常规强制对流层流冷却(冷却速度在30 ℃/s左右)以及超快速冷却(UFC,短时冷却速度可达300 ℃/s以上)情况下的热力耦合分析,计算出带钢在不同冷却强度下温度与应力的二维分布,在此基础上进行了残余应力及由此引起变形的理论分析。通过比较分析的结果,初步得出UFC的适用范围。
For two typical cooling process of hot strip, usual forced convection laminar cooling(cooling rate is about 30 ℃/s) and UFC(ultra fast cooling, cooling rate could be greater than 300 ℃/s) , the thermo-mechanical coupling field was simulated by ANSYS FEM software with different surface convection coefficient. 2-D temperature field and stress field under different cooling rate were calculated, then the residual stress and deformation caused by residual stress were analyzed theoretically. By comparing the analytical results of two cooling patterns, a preliminary applicable condition for UFC was obtained.
出处
《钢铁》
CAS
CSCD
北大核心
2005年第4期39-42,56,共5页
Iron and Steel
基金
国家自然科学基金资助项目(50104004)
关键词
层流冷却
UFC
温度场
应力场
有限元
残余应力
变形
laminar cooling
UFC
temperature field
stress field
FEM
residual stress
deformation
