US 12,472,577 B2
Lateral electro-conduction device and method for multi-wire submerged arc inner/outer welding of straight-seam steel pipe
Zhanli Yang, Heilongjiang (CN); Dong Du, Heilongjiang (CN); Shanbao Zhang, Heilongjiang (CN); Kai Xu, Heilongjiang (CN); Bing Du, Heilongjiang (CN); Yajun Wu, Heilongjiang (CN); Qilong Tang, Heilongjiang (CN); Zhongwang Gong, Heilongjiang (CN); Debin Bai, Heilongjiang (CN); Zekun Yang, Heilongjiang (CN); Xiucheng Xiao, Heilongjiang (CN); Dakui Fei, Heilongjiang (CN); Guangnan Zhao, Heilongjiang (CN); Wei Li, Heilongjiang (CN); and Yongbo Yang, Heilongjiang (CN)
Assigned to Harbin Welding Institute Limited Company, Harbin (CN)
Filed by Harbin Welding Institute Limited Company, Heilongjiang (CN)
Filed on Jan. 15, 2024, as Appl. No. 18/412,885.
Application 18/412,885 is a continuation of application No. PCT/CN2023/084111, filed on Mar. 27, 2023.
Claims priority of application No. 202211690127.1 (CN), filed on Dec. 27, 2022.
Prior Publication US 2024/0207965 A1, Jun. 27, 2024
Int. Cl. B23K 9/10 (2006.01); B23K 9/025 (2006.01); B23K 9/18 (2006.01); B23K 101/06 (2006.01); B23K 103/04 (2006.01)
CPC B23K 9/105 (2013.01) [B23K 9/0253 (2013.01); B23K 9/18 (2013.01); B23K 2101/06 (2018.08); B23K 2103/04 (2018.08)] 7 Claims
OG exemplary drawing
 
1. A lateral electro-conduction device for multi-wire submerged arc inner/outer welding of a straight-seam steel pipe, comprising:
a support device (1);
a floating surface contact electro-conduction device (2);
a lateral electro-conduction brush device (3); and
a lateral electro-conduction metal plate (4); wherein
the support device (1) is used to support a straight-seam steel pipe (5);
the floating surface contact electro-conduction device (2) forms a surface contact with an outer surface of the straight-seam steel pipe (5) and is electrically connected with the straight-seam steel pipe (5);
the lateral electro-conduction brush device (3) is located at a side of the support device (1), and the lateral electro-conduction brush device (3) comprises multiple electro-conduction brushes (3-1) and is electrically connected with the floating surface contact electro-conduction device (2);
the lateral electro-conduction metal plate (4) is located at a side of the lateral electro-conduction brush device (3) and is electrically connected with a negative-pole wire harness of a welding machine (6); and
the electro-conduction brushes (3-1) of the lateral electro-conduction brush device (3) are electrically connected with the lateral electro-conduction metal plate (4); in this way, an electro-conduction circuit is formed by the negative-pole wire harness, the lateral electro-conduction metal plate (4), the lateral electro-conduction brush device (3), the floating surface contact electro-conduction device (2), the straight-seam steel pipe (5) and a welding wire electrode for performing multi-wire submerged arc inner/outer welding on the straight-seam steel pipe (5, wherein the welding wire electrode connected with a positive pole of the welding machine (6) is arranged in advance in the welding seam before welding is performed on the straight-seam steel pipe (5).