NS1402合金(/%:0.01C,0.15Si,0.34Mn,0.004P,0.004S,22.33Cr,40.07Ni,3.22Mo,2.29Cu,0.87Ti,0.11Al,30.6Fe)7.85 t电渣重熔用40 t EAF+VOD冶炼的电极棒凝固收缩过程中容易产生严重的缩孔缺陷。借助商业软件CAD,GEOMESH和MeshCAST,建立...NS1402合金(/%:0.01C,0.15Si,0.34Mn,0.004P,0.004S,22.33Cr,40.07Ni,3.22Mo,2.29Cu,0.87Ti,0.11Al,30.6Fe)7.85 t电渣重熔用40 t EAF+VOD冶炼的电极棒凝固收缩过程中容易产生严重的缩孔缺陷。借助商业软件CAD,GEOMESH和MeshCAST,建立了该电极棒的充型和凝固模型,得出模拟中心缩孔直径为248 mm,与实测值比较,相对误差为4.6%。结果表明,将电极棒倒置可以减小缩孔直径32.2%;随着绝热板长度的增加,缩孔减轻,将绝热板长度增加200 mm,可以基本消除冒口下的缩孔。展开更多