电磁搅拌和过热度对Q345钢铸坯内部质量的影响  

Effect of EMS and superheating on inner quality of Q345 slab

作　　者：曹同友[1] 杨治争[1] 袁凡成[1] 帅国勇[2] 杨新泉[2] 

机构地区：[1]武汉钢铁(集团)公司研究院,湖北武汉430080 [2]武汉钢铁(集团)公司炼钢总厂,湖北武汉430083

出　　处：《钢铁研究》2011年第6期1-3,29,共4页Research on Iron and Steel

摘　　要：以改善Q345钢连铸坯中心质量和组织为目的,进行了不同连铸工艺的对比试验。结果表明,与常规工艺相比,结合电磁搅拌的工艺可显著提高铸坯中心等轴晶率;仅降低钢水过热度虽然对降低铸坯中心偏析作用明显,但其提高铸坯中心等轴晶率的效果低于采用电磁搅拌的效果。Aiming at improving inner quality of Q345 continuous casting slab,different continuous casting technologies were put into practice.The results showed that center equiaxial grain ratio increases greatly with EMS;only lowering superheating leads to downgrade of center deviation,but has less effect of improving center equiaxial grain ratio compared with EMS.

关 键 词：电磁搅拌 过热度 铸坯内部质量 等轴晶率 

分 类 号：TG244[金属学及工艺—铸造]