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Melting and Casting for Semi and Non-Precious (Metal that contains Palladium for more than 30%).
●
Process until the
is same as Melting and Casting Precious metal.
②
Place a casting ring inside the muffle chamber.
③
Close and lock the muffle chamber.
④
Press the Ar button to repeat twice to create a vacuum and inject an argon gas with 0.03MPa pressure
⑤
[
]
inside the muffle chamber (takes approx. 70 sec). The pressure gauge must be at 0.03 before
.
⑥
After Argon substitution is completed, press the Final button to melt the alloy.
⑥
[
]
When the casting timing nearly comes, press the Ar button again to vacuum in the muffle chamber.
⑦
[
]
Back to
of “Melting and Casting Precious Metal” .
⑧
Other Operations
■
Chamber Position Adjustment
●
Muffle rotation and its position could slightly move after many years of usage.
In this case, adjust the muffle rotation and its position by the following.
Keep pressing the
button and press the “Finish” button during the standby mode after power on. L, M
▲
and H lamp of “Vacuum”, lamps of “Stand by”, “Retention”, “Final” and “Casting” illuminate and “Finish”
lamp blinks.
1. Lock the chamber lid and press the “Argon” button so that its lamp illuminates and the muffle chamber
inverts.
2. Press the “
””
” buttons to adjust the casting position (inverting position). When the rotation is too
▲
▼
far, subtract the casting position value.
3. Press the “Pressure Timing” button so that the lamps of L, M and H go out and lamps of 1, 2 and 3
illuminate.
4. Press the “
””
” buttons to adjust the melting position (original position) in the same way as the
▲
▼
casting position.
5. Press the “Vacuum” button to adjust the casting chamber position again. After some adjustments of the
casting chamber position and melting chamber position, press the “Vacuum” button to finish the adjustment.
If you do not press the “Finish” button, the adjustment will not be saved.
※
Note) If the unit continues the operation 50 times, “ERROR” lamp blinks and the unit stops inverting. Press the “Argon” button to
※
adjust their positions again.
Air/Argon Switch Knob
◎
The knob is equipped at right side of the unit. You can choose air pressure or argon gas pressure.
Argon gas pressure is useful to minimize oxidation of melting alloy.
In case of using argon gas pressure, use a regulator to set pressure between 0.5 and 0.9MPa.
※
Note) Perform the casting operation without melting of the alloy to exhaust gas because it will be mixed in the first pressure after
※
the pressure type is switched.