公开(公告)号：US20240207965A1

公开(公告)日：2024-06-27

申请号：US18412885

申请日：2024-01-15

申请人： Harbin Welding Institute Limited Company

发明人： Zhanli YANG ,  Dong DU ,  Shanbao ZHANG ,  Kai XU ,  Bing DU ,  Yajun WU ,  Qilong TANG ,  Zhongwang GONG ,  Debin BAI ,  Zekun YANG ,  Xiucheng XIAO ,  Dakui FEI ,  Guangnan ZHAO ,  Wei LI ,  Yongbo YANG

IPC分类号： B23K9/10 ,  B23K9/025 ,  B23K9/18

CPC分类号： B23K9/105 ,  B23K9/0253 ,  B23K9/18 ,  B23K2103/04

摘要： The present disclosure relates to electro-conduction devices and methods for submerged arc welding of straight-seam steel pipes and in particular to a lateral electro-conduction device and method for multi-wire submerged arc inner/outer welding of a straight-seam steel pipe. The present disclosure aims to overcome the problem of poor closing of the electromagnetic field resulting from the existing negative-pole electro-conduction mechanism and the problem of unstable welding process resulting from bending deformation in the steel pipe welding process. The device includes: a floating surface contact electro-conduction device, capable of forming a surface contact with an outer surface of the straight-seam steel pipe; a lateral electro-conduction brush device, including multiple electro-conduction brushes and electrically connected with the floating surface contact electro-conduction device; a lateral electro-conduction metal plate, electrically connected with a negative-pole wire harness of a welding machine and electrically connected with the lateral electro-conduction brush device. Therefore, an electro-conduction circuit is formed by the negative-pole wire harness, the lateral electro-conduction metal plate, the lateral electro-conduction brush device, the floating surface contact electro-conduction device, the straight-seam steel pipe and a welding wire electrode.