505.839.3010
Neutec/Rio Grande™ J-2
r
Rev. F
Page 9-2
Set the gas flow meter for 6-8 lpm.
6. Wait for the machine to pre-heat
(approximately 40 minutes).
Please Note: As the machine heats up for
the first time after a sealing rod change,
monitor the crucible. If the crucible becomes
white-hot and the temperature reading is
several hundred degrees below the
set-point, the thermocouple may not
be fully inserted in the sealing rod.
7. Seat the sealing rod by rotating the sealing
rod collar screw back and forth three times.
Charging the Crucible
It is imperative that you use the correct amount
of metal for the flask you’re casting. Too much
metal will cause a flask over-fill (leaving a
continuous column of metal between the flask
and the crucible when the metal solidifies). This
can damage parts of the machine and make
flask removal very difficult.
To determine the proper metal amount, consult
a lost-wax casting reference. If you are using
the Neutec™ NeuSprue™ system (strongly
recommended), see the NeuSprue wax to metal
weight conversion table in Appendix A.
1. When the temperature reaches set-point
(casting temperature), open the hood door
and charge the crucible with the correct
amount of metal for the flask to be cast.
Caution! Add metal carefully! Metal
pieces that spill outside the crucible
into the coil area will destroy the coil.
Add metal carefully when set-point is reached.
2. Close the hood door.
Important! This machine is designed
to be used with casting grain. If you are using
previously cast metal (no more than 50% is
recommended), make sure the metal pieces are
small enough to be added to the crucible. Large
pieces can dislocate the sealing rod, causing a
leak or causing erroneous temperature readings
and leading to over-heating of the metal.
