Multi-nozzle combustion end cover vacuum brazing process
US6112971A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 1999 |
| Grant date | Sep 5, 2000 |
| Priority date | — |
| Expiry date | May 12, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23D2213/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A brazing process is provided that addresses the braze joint failure problems encountered in some multi-nozzle combustion end covers. The brazing process embodying the invention provides optimal, predictable low cycle fatigue joint life in particular when brazing 304L stainless steel parts using Amdry 915 braze alloy. The invention was realized in particular in the combination of and application of tightly controlled vital variables of gap, braze alloy, braze peak temperature hold time, cooling (quench) rate, surface finish and braze media to optimal limits for the process parameters. The process provides robust/reliable design limits for braze joints experiencing stress during operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.