钢筋骨架力学性能及焊点金相组织浅析  

Analysis on mechanical properties of steel skeleton and microstructure of welded joints

作　　者：侯爱山 赵红学 苑柳依 苏伟 HOU Ai-shan;ZHAO Hong-xue;YUAN Liu-yi;SU Wei

机构地区：[1]廊坊凯博建设机械科技有限公司,河北廊坊065000 [2]中国建筑科学研究院有限公司,北京100020

出　　处：《建筑机械》2022年第5期123-126,130,共5页Construction Machinery

基　　金：国家重点研发计划资助(2018YFC0705803)。

摘　　要：为了分析钢筋骨架自动成型生产线中不同焊接参数下钢筋骨架力学性能及焊点金相组织的变化,依次对不同参数下主筋力学性能、交叉焊点的抗剪力、热影响区深度、横截面占比和金相组织进行对比分析。研究结果表明,在焊接参数有效范围内,随着焊接时间的增加,主筋力学性能影响很小,焊点热影响区的深度及面积占比有增大趋势,但变动值较小,焊点抗剪性能越好,焊核区的板条马氏体组织逐渐增大且均匀,焊核区力学性能逐渐增强,热影响区的魏氏组织逐渐细化均匀,热影响区力学性能逐渐增强;优化选择焊接时间1.6s后进行钢筋骨架的焊接,可有效提高钢筋骨架交叉焊点的焊接质量和稳定性,为钢筋骨架自动焊接成型参数化控制提供技术支持。In order to analyze the changes of the mechanical properties of the reinforced skeleton and the microstructure of the welded joints under different welding parameters in the automatic forming production line of the reinforced skeleton, the mechanical properties, shear strength, haz depth, cross section ratio and microstructure of the main bar under different parameters were analyzed. The results show that the welding quality and stability can be improved effectively by optimizing the welding time of 1.6s, which provides technical support for the parametric control technology of automatic welding forming.

关 键 词：焊接参数 钢筋骨架 力学性能 交叉焊点 金相组织 

分 类 号：TU511.3[建筑科学—建筑技术科学]