About this Abstract |
| Meeting |
2026 AWS Professional Program
|
| Symposium
|
2026 AWS Professional Program
|
| Presentation Title |
Electron Beam Brazing of Stainless Steel using Nioro Filler Metal |
| Author(s) |
Cheryl Hawk, Amber N. Black, Andrew Duffield |
| On-Site Speaker (Planned) |
Cheryl Hawk |
| Abstract Scope |
Furnace brazing offers two advantages which are a protective atmosphere and repeatability. However, it requires the entire components to be placed in the furnace regardless of the braze location. This research compared furnace brazing and electron beam brazing of a 316L stainless steel component. This component required multiple electron beam welds and one small braze. One issue that arose was one of the joint locations was close to the braze hole, which, if the weld was too wide, could plug the braze hole. Furnace brazing after welding was a concern as residual stress built up in the component could cause dimensional changes (distortion). Electron beam welding is a promising method as it locally heats up the area of interest, thus reducing the chance of distortion. Electron beam brazing proved to be more successful than furnace brazing, due to the geometry of the component. The electron beam weld required to join the component was close to the braze hole. Furnace brazing before welding caused the electron beam weld to pick up the NIORO filler metal resulting in cracking due to saturation of gold in the weld and the tubes became plugged. Since furnace brazing was not an option after welding, electron beam brazing proved to be more successful. Electron beam brazing could be conducted after all the welds were made thus no NIORO filler metal was picked up by the weld and cracking was not observed. |
| Proceedings Inclusion? |
Undecided |