These
stationary components are set between
rotating blade assemblies in the compressor
section of jet turbine engines. They
guide airflow between blade stages,
critical to increased engine efficiency.
Brazing
Application
12 to 15 stators may be used in an
engine, with each stator requiring
attachment of 100+ airfoil vanes to
a shroud ring. High strength, corrosion
resistant, economical joints with
uniform gap are required.
Solution
Brazing powder and powder-binder composites
may be used, but these leave contaminating
residues and promote joint shrinkage
and brazing rejects. MBF is simply
tack welded into place on the shroud
ring and the vanes are assembled and
fixtured with an expansion ring for
brazing. Clean, nonporous and strong
joints are formed upon brazing.
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