Fluxing and Assembly Brazing the Assembly
TY &
SPECIAL TRUCK HOSE
9. Clamp the tube snugly in indicator, and promote
a vise. Properly slip ORS- proper alloy flow during
Braze Type nut (FC2326- the brazing process.
SIZE-186) over the tube.
LOW & MEDIUM PRESSURE HOSE
The flux (high tempera-
ture 700°F to 1800°F is
recommended) should
be applied to all compo-
13. To properly braze the E. At +1125°F the silver
nents and adjacent
application of heat braze ring melts and
areas. This will minimize
should bring both the flows at +1145°F. At this
the heat scale formed,
tube and shoulder up to point the shoulder
act as a temperature
brazing temperature uni- should drop onto the
formly. Therefore, most tube a distance equal to
HIGH PRESSURE HOSE
10. Lightly flux ORS-Braze
of the heat should be the diameter of the
Type shoulder (FC1229-
directed to the shoulder braze ring, which is not
SIZE) counterbore,
and not the tube. The melted and filling in the
install clean braze ring
flux may be used as a area between the coun-
to bottom of counter-
guide: terbore and tube O.D.
bore, reflux counter- A. At +212°F the water
There should be visible
bore. boils off.
braze material at both
ends of the shoulder. HOSE FITTINGS
B. At +600°F to +700°F
11. Slip shoulder onto tube
the flux becomes
The braze joint area needs
puffy and starts to
to be heated uniformly not
squarely and so that
“work” (bubbles).
just the O.D. surface. At
braze ring is snug
brazing temperature the
between the tube and C. At +800°F it lays
components will have a
counterbore lip. against the surface
dark red to medium cherry
and has a translucent
red appearance. Do not
appearance.
12. Flux outside surfaces of
overheat the parts as to
ADAPTERS & TUBE FITTINGS
shoulder.
D. At +1100°F it has the
char the flux. Remove the
appearance of dark
heat after the alloy has melt-
clear water.
ed and pulled through the
joint. Settle the shoulder
onto the tube to insure
14. Allow braze alloy to Braze Inspection
proper insertion.
solidify completely
NOTE: The heating source should be var-
before quenching. Cool
15. Inspect braze for a fillet 16. It is recommended to ied. When using a flame, the fuel mix- Y INSTRUCTIONS
the assembly in hot
all the way around the proof test the assembly
ture should be adjusted so that the base
water (+180°F pre-
tube. Inspect the shoul- in an enclosed cham-
of the flame is blue and there are also
ACCESSORIES & ASSEMBL
ferred) to help facilitate
der sealing surface. ber. Proof test pressure
orange featherlike licks at the end of the
flame.
flux removal. Readily
There should be no should be twice the
available flux removers
alloy overrun or alloy system’s operating
Y
can be added to the
build-up on the sealing pressure but should not
water. It is necessary to
surface. An accumula- exceed twice the
remove the flux residue
tion of braze alloy on recommenced operat-
because it is corrosive.
the sealing surface or a ing pressure of the tube
void in the fillet is unac- or end connections.
HOSE ASSEMBL
EQUIPMENT
ceptable and the shoul- NOTE: The preceding procedure is rec-
der should be replaced.
ommended only. No guarantee or war-
ranty is implied.
APPENDICIES
www.EatonProducts.com
EATON Aeroquip Fluid Conveyance Products A-HOOV-MC001-E1 December 2007
313
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