High-strength, high-toughness, and corrosion-resistant welding method for TKY nodes in deepwater jacket
US12202080B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2024 |
| Grant date | Jan 21, 2025 |
| Priority date | — |
| Expiry date | Jun 12, 2044 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/23
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A high-strength, high-toughness, and corrosion-resistant welding method for TKY nodes in a deepwater jacket includes the following steps: preheating T/K/Y nodes at a predetermined temperature according to a wall thickness of a base material; setting different welding parameters for different welding processes; and performing rooting weld on the preheated T/K/Y nodes through an electrode arc welding process, then performing filling weld through a gas metal arc welding process, and finally performing capping weld through the gas metal arc welding process. A corresponding electrode is selected for the rooting weld, a welding wire is selected for the capping weld according to low-strength matching, a welding wire is selected for the filling weld according to an equal-strength matching principle, and diffusible hydrogen contents of any electrode and any of the welding wires are all less than or equal to a predetermined diffusible hydrogen content.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.