Presintered performs speed aeroengine repairs
A
Morgan Advanced Ceramics product story
Edited by the Engineeringtalk editorial team
Feb 3, 2005
The Wesgo Metals Division of Morgan Advanced Ceramics is offering aeroengine manufacturers presintered preforms for high-temperature braze repair applications.
The Wesgo Metals Division of Morgan Advanced Ceramics is offering aeroengine manufacturers presintered preforms for high-temperature braze repair applications.
An approved OEM and designated engine repair (DER) process for aeroengine component repairs, the use of presintered preforms is a faster and more reliable method than traditional welding or brazing paste.
With turbine temperatures reaching up to 1300C and the presence of hot corrosive gases, components experience considerable erosion and wear.
Presintered preforms consist of a blend of superalloy and low melting point braze alloy.
They are compatible with the base material, which is customised to fit the shape of the component, tack welded into place and then brazed.
Components require minimal post-braze grinding for restoration to the original dimensions and with a porosity of less than 5%, the presintered performs do not suffer from the shrinkage that often occurs with brazing pastes.
Additionally, brazing allows whole components to be heated in a vacuum furnace, reducing distortion.
Presintered performs are designed for both dimensional restorations and crack repairs and are available in various shapes including tapered and cylindrical with thickness ranging from 0.38 to 1.77mm.
Unlike flat performs cylindrical performs do not sag or overflow during brazing so are ideal for restoring holes and bores.
By using this high-quality repair process, manufacturers can now extend the life of engine components by approximately 300%, significantly reducing costs associated with replacement parts and labour.
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