General Electric Company

Anne Elizabeth Kolman

Thomas Edward Johnson

Thomas Frank Fric

David Robert Schumacher

Mark Roger Brown

Bernard Arthur Couture

Dean Henry Castaldo

A combustion liner for a gas turbine combustion system is provided. The combustion liner comprises a combustion zone between an inlet end and an exhaust end. The combustion liner comprises a one-piece casting construction. The combustion liner is formed from a nickel-based superalloy having strength characteristics.

Combustion liner for gas turbine formed of cast nickel-based superalloy

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.

Multi-nozzle combustion end cover vacuum brazing process

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Niskayuna, NY, United States of America

Anne Elizabeth Kolman