中厚板淬火过程的热力学数值模拟及实验

Thermal Numerical Simulation and Experiment in Quenching Process of Medium and Heavy Plate

以高密度管流冲击钢板表面时的对流换热边界为基础,采用ANSYS三维有限元对中厚板淬火中的钢板温度场、应力场及应变场进行了数值模拟,并对模拟得到的温度与时间、应力以及塑性应变的关系进行分析,得到了淬火冷却过程中保持钢板平直状态下应力、应变及变形的特点,为采用适当工艺措施使中厚板淬火获得平直板形提供了理论依据。

Based on convective heat transfer boundary conditions of steel plate subjected to large density impingement pipe jets, the thermal fields including temperature field and stress-strain field of medium and heavy plate are computed numerically by ANSYS 3D finite element method. Analysis on numerical results of corresponding timedependent temperature history and variety of the stress and the plastic strain is performed to obtain the characteristic of keeping flatness in quenching process, which can provide theoretical basis for preventing deformation by the appropriate control of water flow ratio between upper and lower jets.