Advantages of Aluminum Dip Brazing
Aluminum Dip Brazing is low cost and usually requires little or no tooling
The inherent efficiency of the process keeps costs low in small
quantities as well as high volumes.
Strong leak-proof joints are easily and efficiently achieved using modern
brazing techniques. This includes the brazing of assemblies with joints that are
inaccessible to welding and other joining techniques. Thick and thin cross
sections, unconventional shapes, wrought materials and cast alloys can be
simultaneously joined in a single assembly.
Strength of an Aluminum Dip Braze Joint
The braze joint itself will exhibit strength equal to the base metal. Joint
strength may be enhanced by using lap joints in lieu of simple butt joints.
Distortion Of Aluminum Dip Braze Assemblies
Large and extremely complex shapes can be brazed with minimal distortion at
relatively lower-than-welding temperatures. Dip Brazing utilizes uniform
application of heat and works in conjunction with the high thermal conductivity
of aluminum. This even heating reduces distortion which may be particularly
problematic when attempting to manufacture an assembly by welding.
Corrosion Resistance of Aluminum Dip Braze Assemblies
The corrosion resistance of aluminum dip brazed assemblies is the same as that
of the base metal. Complete removal of residual flux and absence of cracks or
fissures, which may entrap salt, is important. In critical applications,
complete removal of flux and entrapped salts may be confirmed with an optional
silver nitrate test.
Properties Of Aluminum Dip Braze Assemblies
The fillet formed by the filler metal is ideally shaped to resist mechanical
fatigue. The filler metal offers joint strength, thermal conductivity and
electrical conductivity equal to or exceeding the base metal.
Final Appearance of Aluminum Dip Brazing Assemblies
The aluminum dip braze process does not create unsightly slag at the braze
joints. In comparison to welding, dip brazed joints form a uniform fillet
requiring little or no metal finishing. At CMC, all dip brazed assemblies are
chemically cleaned subsequent to brazing and tack removal. Assemblies are ready
for Chem Film, paint, or other final finish.