Bego Nautilus CC plus Manual page 30

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Casting non-BEGO alloys
Before non-BEGO alloys can be casted automati-
cally, the specific alloy values need to be deter-
mined and a corresponding program needs to be set
up. See paragraph "Creating programs for non-
BEGO alloys" for detailed information. Automatic
casting is only possible with the NAUTILUS
plus.
Own programs can also be created for manual
casting of non-BEGO alloys. This is, for instance,
necessary to specify the alloy names in the casting
protocols. The preheating and final heating
processes during manual casting must be stopped
by the operator, see paragraph "Manual casting
without pyrometer" on page 56!
NOTICE
Alloys with a high palladium content are
generally casted without a crucible insert. An
insert can be used if the alloy chips rise during
the heating process and thus do not have the
proper temperature (failed "incorporation" in the
induction field):
• a graphite insert for palladium contents of up
to 30%,
• a glassy carbon insert for palladium contents
over 30%, which reliably prevents carbon from
being absorbed by the alloy.
Should the specifications made by the alloy
manufacturer differ from the above, those speci-
fications must be followed.
Creating programs for non-BEGO alloys
New program memory locations can be set up for
specific alloys, when such non-BEGO alloys are
used regularly. In order to cast non-BEGO alloys
automatically, the respective alloy must first be
casted manually to harmonize the casting temper-
ature and the device parameters.
First, a BEGO alloy with a comparable composition
and casting temperature must be found
30
®
CC plus ⋅ Nautilus
®
CC
*)
. The
®
T
WARNING
Casting titanium is not permis-
sible!
Risk of personal injury and damage
to the device!
CAUTION
Aluminum (> 0.5 %) contained in
non-precious metal alloys without
beryllium may produce strong
oxides, which could cause significant
parts of the melt to remain inside the
crucible. Such alloys cannot be be
casted with the NAUTILUS
CAUTION
Alloys containing beryllium produce
strong oxides during the melting
process, cause substantial wear to
the crucibles and significant amounts
remain inside the crucible.
Carcinogenic particles are released
when beryllium is processed!
Cast and finish only while taking
suitable protective measures!
program location of this alloy is then copied in order
to apply the device parameters (e.g. use of the
crucible insert). The following steps are required to
do this.
*) See BEGO precious metal alloys table, BEGO
catalog or the information on alloys available in the
download center at www.bego.com.
®
.