基于SYSWELD的大厚板窄间隙双丝埋弧焊热过程数值模拟  

Numerical simulation of thermal process of narrow gap twin-wiresubmerged arc welding of large thick plate based on SYSWELD

作　　者：周方明[1] 单磊 杨志东[1] 赵利忠 孙亚杰 朱莎莎 ZHOU Fangming;SHAN Lei;YANG Zhidong;ZHAO Lizhong;SUN Yajie;ZHU Shasha(Jiangsu Key Laboratory of Advanced Welding Technology,Jiangsu University of Science and Technology,Zhenjiang 212100,China;CCCC Third Harbor(Nantong)Offshore Engineering Co.Ltd.,Nantong 226200,China;Erchong(Zhenjiang)Heavy Equipment Co.Ltd.,Zhenjiang 212001,China)

机构地区：[1]江苏科技大学江苏省先进焊接技术重点实验室,镇江212100 [2]中交三航(南通)工程海洋工程有限公司,南通226200 [3]二重(镇江)重型装备有限公司,镇江212001

出　　处：《江苏科技大学学报（自然科学版）》2024年第5期45-50,共6页Journal of Jiangsu University of Science and Technology:Natural Science Edition

摘　　要：基于60 mm厚Q345R钢,开展了窄间隙双丝埋弧焊焊接试验,得到了合理的工艺参数,焊缝成型平整均匀无任何缺陷.通过SYSWELD有限元软件对大厚板窄间隙双丝埋弧焊焊接热过程进行数值模拟分析,模拟的熔池宽与高和实际相比,误差率均控制在5%以内,并利用热电偶装置测得热影响区热循环曲线与模拟的热循环曲线变化趋势基本一致,具有升温快,降温慢的特点,验证了该模型的有效性.为后续利用该模型,进一步探究不同参数或边界条件对于大厚板窄间隙双丝埋弧焊焊接热过程与应力-应变规律提供理论指导.Based on 60 mm thick Q345R steel,the narrow gap twin-wire submerged arc welding test was carried out,reasonable process parameters were obtained,and the weld was formed flat and uniform without any defects.Through SYSWELD finite element software,the thermal process of large thick plate narrow gap twin-wire submerged arc welding was numerically simulated and analyzed,and the error rate of the simulated molten pool width was controlled within 5%compared with the actual one,and the thermocouple device was used to measure the thermal cycle curve in the heat-affected zone,and the result was consistent with the simulated thermal cycling curve change trend,having the characteristics of fast heating and slow cooling,which verified the effectiveness of the model.This research provides theoretical guidance for further exploring the thermal process and stress-strain law of large thick plate narrow gap twin-wire submerged arc welding with different parameters or boundary conditions using the model.

关 键 词：大厚板 窄间隙双丝埋弧焊 热过程 数值模拟 SYSWELD 

分 类 号：TG445[金属学及工艺—焊接]