E36船板钢板坯凝固组织模拟研究和应用

为改善钢厂E36钢板坯内部质量,通过ProCAST软件建立E36钢板坯凝固过程数学模型,并在此基础上采用CAFE模块对研究过热度(10～25℃)、拉速(0.70～0.85 m/min)和二冷比水量(0.30～0.39 L/kg)等不同连铸工艺参数以及加入电磁搅拌的300 mm×2 070 mm铸坯凝固组织进行模拟.从模...

Simulation Study and Application on Solidification Structureof E36 Steel Ship Slab

In order to improve the internal quality of E36 steel slab in a steel plant, a mathematical model of the solidification process of E36 steel slab is established through ProCAST software, and on this basis, the CAFE module is used to simulate the solidification structure of 300 mm x 2 070 mm the cast slab with the superheat 10 ~ 25 ℃., casting speed 0. 70 ~ 0. 85 m/min and secondary cooling ratio 0. 30 ~ 0. 39 L/kg different process parameters as well as adding EMS are studied. From the simulation results, it can be seen that for every 10 ℃. increase in superheat, the proportion of equiaxed crystal regions decreases by 3%. As the degree of superheat increases, columnar crystal regions increase, equiaxed crystal regions decrease. The installation of electromagnetic stirring in the second cold zone increases the equiaxed crystal zone and reduces the average crystal grain radius. According to the simulation results, the process is optimized, and the superheat is reduced from 15 to 10 ℃. By comparing the low magnification structure of the cast slab before and after the optimization, it can be seen that the equiaxed crystal zone of the cast slab is significantly enlarged, and the center segregation is effectively improved.