The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 18, 2025
Filed:
Jan. 15, 2024
Harbin Welding Institute Limited Company, Heilongjiang, CN;
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;
Yongbo Yang, Heilongjiang, CN;
Harbin Welding Institute Limited Company, Harbin, CN;
Abstract
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.