不同钢种凝固模式的模拟分析研究

Simulation Analysis of Solidification Characteristics of Different Steel

采用铸造模拟分析软件对3种6 t具有不同液固两相区温度区间的钢种进行了凝固过程的数值模拟分析。结果表明,不同液固两相区温度区间钢的凝固模式相差较大,按两相区温度区间的大小,其凝固模式呈现出由“U”型整体凝固模式向“V”型顺序凝固模式的转变。现场钢锭冒口解剖结果表明,一次缩孔深度与实际缩孔深度较相近,验证了模拟结果与现场试验结果具有较高的吻合度。

Three kinds of six tons of steel ingots that have different temperature windows of the solid-liquid regions were simulated and studied by casting simulation analysis software.The results show that the solidification mode of steels with different liquid-solid phase zone varies greatly.According to the temperature interval of the two-phase region,the solidification mode shows the change from"U"overall solidification mode to"V"sequential solidification mode.The anatomical results of the field steel ingot feeder show that,the depth of the primary shrinkage hole is close to the actual shrinkage hole depth,which proves that the simulation results have a high degree of conincidence with the field test results.