Q345E角钢开发实践  

Development practice of Q345E angle steel

作　　者：张华 Zhang hua(Xuansteel Company of HBIS Group,Xuanhua 075100,China)

机构地区：[1]河钢集团宣钢公司,河北宣化075100

出　　处：《金属制品》2023年第3期31-33,共3页Metal Products

摘　　要：通过分析E级角钢与B、C、D级角钢的成分性能差异,设计合理的化学成分和工艺参数,开发生产了Q345E角钢。取样对成品化学成分、金相组织和冲击试样的断口形貌进行了分析,金相组织为铁素体+珠光体,无异常组织,晶粒度9级,屈服强度430 MPa,抗拉强度极差67 MPa,产品伸长率32%,V型缺口冲击功均在100 J以上,各项性能指标均符合标准要求。By analyzing differences in composition and performance between E-grade angle steel and B,C,and D grade angle steel,and designing reasonable chemical composition and process parameters,Q345E angle steel has been developed and produced.Sampling was conducted to analyze chemical composition,microstructure,and impact sample fracture morphology of finished product.Microstructure is ferrite and pearlite,with no abnormal structure.Grain size is 9 grade,with yield strength 430 MPa and tensile strength range 67 MPa.Product elongation is 32%,and V-notch impact energy is above 100 J.All performance indicators meet standard requirements.

关 键 词：Q345E 化学成分 金相组织 晶粒度 抗拉强度 冲击功 

分 类 号：TG335.11[金属学及工艺—金属压力加工]