Objective:
The project goal is to implement semi-automatic GTAW tacking and corrosion pit and scar repair technology mitigating the need for manual FCAW tacking and repair of corrosion damage onboard ships. The project objectives are:
- Evaluate current procedures and qualification requirements for manual fillet weld tacking.
- Develop procedures for fillet weld tacking.
- Evaluate current inspection and qualification requirements for manual repair of corrosion pits.
- Develop procedures for semi-automatic GTAW pit and scar repair in the flat, vertical, and overhead positions.
- Develop a fixture for the GTAW torch to aid the operator in the pit repair operation.
Summary:
This project addresses the strategic plan by providing a focused technical solution to these problems, saving time, and increasing quality by quickly making repairs that need little to no post-processing. In many cases, the exquisite control of welding parameters may provide a solution that does not affect the paint on the back side of the metal, providing further savings. Part of the project will address this benefit and provide clear guidance for operators. The project will develop pre-programmed schedules that can be implemented by any welder/filter skill level.
Key Deliverables / Benefits:
The results of this project will be made available to the industry at large through a shipyard demonstration, presentations at conferences and Panel meetings, and providing the results via a final report.
Overview
Project Team:
- EWI
- Huntington Ingalls – Ingalls Shipbuilding
- NSWCCD
February 2024 – February 2025
NSRP ASE Investment: $140K
