高强度桥梁钢Q500qE板材焊接性能研究  

Research on Welding Property of High-Strength Q500qE Bridge Plate

作　　者：邱福祥[1] 艾爱国[1] 罗松云[1] 程浩轩 QIU Fuxiang AI Aiguo LUO Songyun CHENG Haoxuan(Xiangtan Iron ＆ Steel Co. ,Ltd. of Hunan Valin, Xiangtan 411101, China)

机构地区：[1]湖南华菱湘潭钢铁有限公司,湖南湘潭411101

出　　处：《金属材料与冶金工程》2017年第3期10-14,18,共6页Metal Materials and Metallurgy Engineering

基　　金：湖南省战略性新兴产业科技攻关类项目(2016GK4036)资助

摘　　要：通过对华菱湘钢生产的高强度桥梁钢Q500qE进行斜Y型坡口焊接裂纹试验、热影响区最高硬度试验以及典型接头焊接工艺试验进行研究,并对焊接试件进行力学性能试验。通过对焊缝硬度、拉伸、弯曲和冲击等对比试验结果分析可知:埋弧自动焊和CO_2气体保护焊两种焊接方法的焊接接头的力学性能良好,焊接接头最高硬度远低于标准HV350要求。试验研究结果表明:湘钢产Q500qE板材焊接性优良,满足钢结构件的制作要求,能运用于实际生产。In order to test the weldability of high strength bridge steel Q500qE produced by Xiangtan Iron and Steel Co.,Ltd. of Hunan Valin, we carried out Y groove weld crack test,maximum hardness surveys on HAZ, welding procedure test of typical joints and mechanical tests on welded specimen. Through comparing and analyzing of test results of welding seam hardness,tensile strength, bending property and impact toughness we found that by SAW and GMAW,mechanical properties of welded joints are good and the maximum hardness value is far below that in the standard request HV350. This study indicates that the weldability of Q500qE produced by Xiangtan Iron and Steel Co.,Ltd. of Hunan Valin is very good, and can meet the requirement for structure steel, thus it is ready for actual production.

关 键 词：Q500qE 焊接 焊接性能 焊接工艺 

分 类 号：TG406[金属学及工艺—焊接]