Ugin DUCATRON 3 Serie Modo De Empleo página 15

BALANCING THE ARM
The balancing system consists of a counterweight mounted on the far end of the arm.
On the other end, the balance is established with«ring +cradle» which has a constant
Weight (1150±70g).
The chart below gives the theoretical weights of the rings (after a run through the furnace) and
corresponding cradles.
DIMENSIONS in MM
Ring Diam
30
40
50
65
80
90
IMPORTANT
Never allow the arm to rotate without the «cradle +ring» assembly.
CHOOSING THE CRUCIBLE
The Ducatron Serie 3 is delivered with two types of crucibles and a vitrified carbon sheath.
A – SILICON CARBIDE CRUCIBLE (grey)
The silicon carbide crucible is suitable for casting base metals and precious metals
It has high heat-resistant properties for use at temperatures up to 1,500° C or 1,600° C.
The silicon carbide prevents molten metals from sticking between the crucible bottom and the
injection nozzle.
B – SILICON DIOXIDE CRUCIBLE (white)
The silicon dioxide crucible is suitable for casting base metals and precious metals.
It is slightly less temperature resistant (1400° C to 1500° C) than the silicon carbide crucible, but
less expensive.
C – VITREOUS CARBON SHEATH
The vitreous carbon sheath fits inside silicon dioxide and silicon carbide crucibles to protect
precious and semi-precious alloys during the melting process and to help improve temperature
consistency.
It is non-porous and so protects the alloy from contamination by the carbon.
NOTA :
The vitrified carbon sheath should never be used for non precious alloys.
RING WEIGHT in GRS
Height Metal
55 100
55 170
55 230
55 355
55 500
70
No metal
54
96
150
255
385
623
13
SERIE3
CRADLE
WEIGHT in Gr
1074
1022
966
843
700
527