82B高碳钢小方坯中磷的偏析行为  

Segregation Behavior of Phosphorus in Casting Billet of High Carbon Steel 82B

作　　者：崔怀周[1] 陈伟庆[1] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083

出　　处：《特殊钢》2011年第6期25-27,共3页Special Steel

摘　　要：研究了拉速(2.8～3.0 m/min)、二冷比水量(0.83～1.8 L/kg)和末端电磁搅拌(0～400 A,6 Hz)对82B钢(/%:0.79～0.81 C、0.21～0.24Si、0.81～0.83Mn、0.012～0.016P、0.005～0.008S、0.25～0.30Cr)130 mm×130mm铸坯断面P偏析的影响结果表明,磷在铸坯中的最大偏析点不在凝固中心,而是在柱状晶与等轴晶交界处;随着二冷比水量的增大、拉速的降低及末端电磁搅拌强度的增大,P元素的最大偏析率有明显降低。The effect of casting speed（2.8～3.0 m/min）,secondary cooling water flow rate（0.83～1.8 L/kg） and final electromagnetic stirring（0～400 A,6 Hz） on phosphorus segregation in cross section of 130 mm×130 mm casting billet of steel 82B（/%：0.79～0.81 C,0.21～0.24Si,0.81～0.83Mn,0.012～0.016P,0.005～0.008S,0.25～0.30Cr） has been studied.The results show that the maximum segregation of phosphorus in billet is at the juncture of column crvstal and equiaxial crvstal but not at solidification center;with increasing secondary cooling water flow rate,decreasing casting speed and increasing intensity of final electromagnetic stirring,the maximum phosphorus segregation ratio decreases obviously.

关 键 词：82B高碳钢 小方坯 磷 偏析 

分 类 号：TF777[冶金工程—钢铁冶金]