초록 ▼

Castings for gas turbine parts exposed on one side to a high-temperature fluid medium have cast-in bumps on an opposite cooling surface side to enhance heat transfer. Areas on the cooling surface having defectively cast bumps, i.e., missing or partially formed bumps during casting, are coated with a

Castings for gas turbine parts exposed on one side to a high-temperature fluid medium have cast-in bumps on an opposite cooling surface side to enhance heat transfer. Areas on the cooling surface having defectively cast bumps, i.e., missing or partially formed bumps during casting, are coated with a braze alloy and cooling enhancement material to salvage the part.

대표청구항 ▼

1. A method of salvaging a casting having cast cooling bumps projecting from a surface thereof wherein at least one area of said surface has defectively cast bumps manifested by one or more missing or partially cast bumps, comprising the steps of:identifying the defectively cast area; and applying a

1. A method of salvaging a casting having cast cooling bumps projecting from a surface thereof wherein at least one area of said surface has defectively cast bumps manifested by one or more missing or partially cast bumps, comprising the steps of:identifying the defectively cast area; and applying a coating on said defectively cast area to form an overlying coated surface forming a coated surface area in excess of the uncoated defective surface area to afford enhanced heat transfer across the casting relative to the heat transfer across the casting without applying the coating.