Melting precious metal without graphite
crucible insert
In particular with small alloy quantities individual
casting laminae may line up in the induction field
such that they are not adequately heated and
remain unmelted in the crucible or casting cone.
This behaviour is due to the process and usually has
no influence on the casting result. If all casting
laminae are to be melted, ensure that they have
contact with each other in the crucible ("heap
together" the casting laminae).
Crucible coating Lolipot
BEGO Lolipot contains a coating material specially
developed for BEGO ceramic crucibles of BEGO's
Nautilus
®
and Fornax casting units. The coating
results in an extended service life of the crucible and
ensures casting with nearly no residue, especially
with alloys having a high gold content. It is equally
suitable for CoCr and NiCr alloys. Lolipot has no
influence on the properties of the alloy. When the
effect starts to decline, Lolipot can be reapplied.
Pyrometer
The temperature is recorded by a precision optical
system that is fixed to the hinged screen.
The closed hinged screen must lie completely on
the surface! The optical system must not be swung
out during operation (see illustration)!
(Look through the protective lens next to the optical
system to observe the melt.)
The optical waveguide (the cable above the
machine) is sensitive to bending and heat! Bending
and touching with hot objects (moulds!) must always
be avoided!
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