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With phosphate-bonded investment you can go immediately to casting tempera-
ture. The flask can be heated up in 2 hours from 300 °C to e.g. 900 °C (equivalent
to a ramp of 5 °C/min) and keep it there 30 to 60 minutes (smaller flasks less time,
bigger flasks more time).
Phase 3 Bringing flasks to casting temperature. After reaching the casting temper-
ature in the furnace, please give flask a rest of 30 – 60 minutes (depending on
size) to ensure that set the temperature is also inside flask.
Figure 16: firing cycle for MC60V
This “gentle” firing cycle needs maximum 7 hours, so from wax to casting it will take only
one day.
Firing cycle for MC60V, gypsum bonded investment material
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