Metal fusion bonding – Process – Encasing a rodlike core within a substantially coextensive...
Patent
1999-05-12
2000-09-05
Ryan, Patrick
Metal fusion bonding
Process
Encasing a rodlike core within a substantially coextensive...
2282621, 22826242, 2282629, B21D 3904, B23K 100, B23K 119, B23K 2016, B23K 2022
Patent
active
061129712
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.
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Castaldo Dean Henry
Couture Bernard Arthur
Kolman Anne Elizabeth
Schumacher David Robert
General Electric Co.
Pittman Zidia T.
Ryan Patrick
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