焊管2025，Vol.48Issue(2)：38-45,8.DOI:10.19291/j.cnki.1001-3938.2025.02.006
基于JMatPro软件的焊接冷却速度控制及焊缝性能研究
Study on Welding Cooling Rate Control and Weld Performance Based on JMatPro Software
摘要
Abstract
In order to improve the weld performance,JMatPro software and heat source model were used to control the welding cooling rate and optimize the microstructure and mechanical properties of the weld zone.The microstructure of the weld zone was characterized by scanning electron microscopy(SEM)and backscattered electron imaging(EBSD).JMatPro software simulation shows that Q235 steel obtains a large amount of bainite at a high cooling rate,resulting in a significant improvement in its mechanical properties.The stable control of welding cooling rate is realized by using the line heat source model and combining with appropriate welding process parameters(voltage,current and welding speed).The optimized welding parameters were used to carry out welding tests.The results showed that the weld zone obtained ultra-fine equiaxed crystals and high content bainite with higher welding cooling rate,and the hardness of the weld zone was significantly improved,with a maximum increase of 92%.The results have important guiding significance for improving weld performance,optimizing welding process,energy saving and emission reduction.关键词
Q235钢/热源模型/焊接冷却速度/焊缝性能Key words
Q235 steel/heat source model/welding cooling speed/weld properties分类
矿业与冶金引用本文复制引用
邓江流,朱单单,董超,龙绍檑,龙潇..基于JMatPro软件的焊接冷却速度控制及焊缝性能研究[J].焊管,2025,48(2):38-45,8.基金项目
贵州省基础研究计划(自然科学类)项目"共晶型难熔高熵合金涂层激光-感应复合熔覆增材制造及其高温摩擦行为研究"(项目编号黔科合基础-ZK[2024]一般516) （自然科学类）
贵州省基础研究计划(自然科学类)项目"有效变形体积与高强钢多层次组织的复合关系及对塑韧性的控制研究"(项目编号黔科合基础[2020]1Y199) （自然科学类）
高层次人才科研启动经费项目"弹簧钢冷卷加工过程的组织控制及优化研究"(项目编号XJGC20190949). （项目编号XJGC20190949）
