板坯中心偏析对Q690D高强钢侧弯性能的影响  

Effect of Casting Slab Central Segregation on Side Bending Property of Q690D High Strength Steel

作　　者：孙胜英 成慧梅 杨鑫 赵欲健 SUN Shengying;CHENG Huimei;YANG Xin;ZHAO Yujian(School of Materials Science and Engineering,Hebei University of Engineering,Handan 056038,China;Technical Centre,Hesteel Company Limited Handan Branch,Handan 056015,China;Manufacturing Department,Hesteel Company Limited Handan Branch,Handan 056015,China)

机构地区：[1]河北工程大学材料科学与工程学院,河北邯郸056038 [2]河钢股份有限公司邯郸分公司技术中心,河北邯郸056015 [3]河钢股份有限公司邯郸分公司生产制造部,河北邯郸056015

出　　处：《热加工工艺》2025年第3期130-133,共4页Hot Working Technology

基　　金：河北省高等学校科学技术青年拔尖研究项目(BJ2021015)。

摘　　要：采用不同电磁搅拌电流强度进行Q690D高强钢铸坯冶炼,结合低倍硫印、低倍酸洗和原位分析等检测方法,研究电磁搅拌强度对Q690D连铸坯中心偏析和侧弯性能的影响。结果表明,在Q690D冶炼过程中连铸工艺采用弱电磁搅拌模式(130 A),可以有效减小板坯中心偏析,有利于获得侧弯性能良好的钢板。Q690D high strength steel slabs were smelted with different electromagnetic stirring current parameters.The effects of electromagnetic stirring intensity on the central segregation and the lateral bending performance were studied,and the sulphur print,acid etching and in-situ analysis were conducted.The results show that the high strength steel smelting process in continuous casting process adopts the model of weak electromagnetic stirring(130 A),the central segregation of slab can be reduced effectively,which is beneficial to obtain good lateral bending property of the steel plate.

关 键 词：中心偏析 侧弯性能 Q690D 高强钢 

分 类 号：TG249.7[金属学及工艺—铸造]