摘要
针对海上风电管类零件的修复问题,采用电弧焊复合激光冲击锻造工艺对Q235钢管进行修复。研究激光冲击频率对焊缝几何形貌、显微组织和显微硬度的影响,同时将电弧焊复合激光冲击锻造与电弧焊修复进行对比。结果表明:焊缝的熔宽和熔深随激光冲击频率的增高而增大,余高和余高因数随频率的增高而减小,熔合区、部分熔合区和热影响区的硬度随频率的增高而增大;与电弧焊修复相比,电弧焊复合激光冲击锻造获得的熔覆层金相组织更细小,表面微裂纹明显减少,显微硬度更高(平均显微硬度提高9.39%)。
Aiming at the repair problem of offshore wind power pipe parts, a composite process of arc welding-laser shock forging is used to repair Q235 steel pipe. The influence of laser shock frequency on the geometrical morphology, microstructure and microhardness of the weld joint is studied, and the comparison between arc weld-laser shock forging and arc welding is made. The results show that: with the increase of laser shock frequency, the weld width and weld depth increase, the residual height and residual height factor decrease, and the hardness of the fusion zone, partial fusion zone and heat affected zone increase;compared with arc welding repair, the microstructure of the cladding layer obtained by arc welding-laser shock forging is finer, the surface microcracks are significantly reduced, and the microhardness is higher(the average microhardness is increased by 9.39%).
作者
屠艳
李国锐
谢地辉
张永康
TU Yan;LI Guorui;XIE Dihui;ZHANG Yongkang(COSCO Shipping(Qidong)Offshore Co.,Ltd.,Qidong 226259,Jiangsu,China;School of Electromechanical Engineering,Guangdong University of Technology,Guangzhou 510006,Guangdong,China)
出处
《中国海洋平台》
2022年第1期6-11,共6页
China offshore Platform
基金
国家自然科学基金(编号:51775117)
广东省海洋经济发展(海洋六大产业)专项资金项目(粤自然资合[2020]017号)。
