HRB400E热轧盘螺金相显微组织中贝氏体体积分数控制生产实践  

Production Practice on Volume Fraction Control of Bainite in Metallographic Phase Microscopic Structure of HRB400E Hot Rolling Coiled Rebar

作　　者：沈红林[1] 张森 王文锋 章祝雄 SHEN Hong-lin;ZHANG Sen;WANG wen-feng;ZHANG Zhu-xiong(Kunming Vocational and Technical College of Industry,Kunming,Yunnan 650302,China;Kunming Iron&Steel Holding Co.,Ltd.,Kunming,Yunnan 650302,China)

机构地区：[1]昆明工业职业技术学院,云南昆明650302 [2]昆明钢铁控股有限公司,云南昆明650302

出　　处：《云南冶金》2022年第5期102-108,共7页Yunnan Metallurgy

基　　金：云南省教育厅科学研究基金项目(2020J1333)。

摘　　要：某钢铁公司HRB400E热轧盘螺弯曲断裂的主要原因是产品金相显微组织中贝氏体体积分数偏高。对导致HRB400E热轧盘螺金相显微组织中贝氏体产生的影响因素做了详细分析,并在生产实践中采取了化学成分控制、轧制工艺和冷却工艺控制措施,有效地降低了HRB400E热轧盘螺弯曲断裂的现象。Bending failure occurred on hot rolling coiled rebar of one Iron and Steel Company,because of high volume fraction of bainite in metallographic phase microscopic structure of HRB400E hot rolling coiled rebar.The influencing factors for bainite in metallographic phase microscopic structure of HRB400E hot rolling coiled rebar were analized detailed,and the control measures of chemical component control,rolling process and cooling process were adopted in production practice,therefore the phenomenon that bending failure occurred on hot rolling coiled rebar were reduced effectively.

关 键 词：HRB400E热轧盘螺 弯曲断裂 金相显微组织 贝氏体体积分数 

分 类 号：TG142.1[一般工业技术—材料科学与工程]