Q420NQR1耐大气腐蚀热轧H型钢性能稳定化控制  

Stabilization Control for Performance of Q420NQR1 Weather Resisting Hot Rolled H Beam

作　　者：卜向东[1] 涛雅[1] 宋振东[1] 周彦[1] 高峰[1] Bu Xiang-dong;Tao Ya;Song Zhen-dong;Zhou Yan;Gao Feng(Technical Center of Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China)

机构地区：[1]内蒙古包钢钢联股份有限公司技术中心,内蒙古包头014010

出　　处：《包钢科技》2018年第5期42-46,共5页Science & Technology of Baotou Steel

摘　　要：文章介绍了包钢生产的Q420NQR1轧制H630 mm×200 mm×15 mm×20 mm的H型钢时,存在组织异常、低温冲击韧性波动的情况,通过对成分及轧制工艺的优化,消除了异常组织,组织均匀性有了较大提高,低温冲击韧性波动得到了有效控制。In this paper, it is described that when rolling the H630 mm×200 mm×15 mm×20 mm H beam with Q420NQR1 produced by Baotou Steel, there are such situations as abnormal microstructure and low temperature impact toughness fluctuation. The abnormal microstructure are eliminated, homogeneity of microstructure is greatly improved and low temperature impact toughness fluctuation is effectively controlled through optimizing the composition and rolling process.

关 键 词：Q420NQR1 H型钢 组织 性能 

分 类 号：TG335.11[金属学及工艺—金属压力加工]