Creating programs for non-BEGO alloys
To cast non-BEGO alloys as well, manual casting of
the alloy concerned is first necessary in order to
match the casting temperature to the machine
parameters. The following steps are required to do
this.
Preliminary work
Determine the following values from the manufac-
turer's specifications (processing instructions, data
sheet):
• the three most important alloy components,
• casting temperature,
• processing specifications (melting with graphite
insert, use of melting powder, etc.)
Find the BEGO alloy that corresponds most closely.
Sources: The brochure in the appendix to this
documentation (precious metal), the BEGO
catalogue or look for "alloy information" on the
Internet at www.bego.com. Find the program
number of the matching BEGO alloy in the program
table on page 27.
Casting
Cast the non-BEGO alloys manually with pyrometer
- see beginning on page 33. For this purpose use
the program number of the BEGO alloy determined.
If necessary, change the casting temperature
indicated in the display according to the manufac-
turer's specifications. Select the highest casting
temperature in recommended casting ranges.
Follow the instructions in the operating manual
beginning on page 33, including the holding times
during melting.
Note the casting temperature indicated when
casting is triggered. It is required for creating the
program for the non-BEGO alloy.
Creating programs
How to create a new program is described on page
40. Among other things, the determined and noted
casting temperature is required for this.
The programs 181 to 186 should be used for non-
precious non-BEGO alloys that tend to spray
during melting under vacuum because casting is
carried out at a reduced vacuum here. Programs
191 to 193 use the maximum vacuum and are
therefore not suitable for these alloys.
Program 116 (InLloyd
®
W) must be used as a
master template for non-BEGO alloys with a high
gold content of over 90%.
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