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:
May. 27, 2025
Filed:
Nov. 13, 2024
Tianjin University, Tianjin, CN;
Lianyong Xu, Tianjin, CN;
Kangda Hao, Tianjin, CN;
Yongdian Han, Tianjin, CN;
Lei Zhao, Tianjin, CN;
Wenjing Ren, Tianjin, CN;
Tianjin University, Tianjin, CN;
Abstract
In a field of welding technology, a welding method for a sea pipe with high efficiency and comprehensive performance under shaking of a pipe-laying ship is specifically disclosed. The welding method is as follows: performing ultra-short arc GMAW all-position welding on the sea pipe within a range of heat input of 0.2 kJ/mm˜0.3 kJ/mm, while setting a peak current, setting a peak current descent rate to 50 A/ms˜70 A/ms, and setting the necking time to 3 ms˜7 ms in the GMAW waveform to 285 A˜370 A. A welding effect of overall low heat input and partial high heat input is formed, and the stability of all-position welding of the sea pipe is guaranteed, which realizes stable welding of the sea pipe under the condition of pipe-laying ship shaking, and improves the fatigue resistance and corrosion resistance of the sea pipe.