autocast universal
®
230 Casting System Crowns and bridges Stand 1.9. 03 A 8
Preheating Cycle
The expansion of rematitan
®
Ultra investment material con
only be controlled by the temperature. As it is not possible to
calibrate all ovens accurately, the temperature recommended
by us may be increased or decreased as required.
In our experience the temperature range is between 880°C
und 910°C/1,616°F and 1,670°F.
Higher final temperature => wider fit
Lower final temperatur => tighter fit
Longer holding time at final temperature => wider fit
Shorter holding time at final temperature => tighter fit
If the final temperature is too low, the investment material
may be unstable.
Place the ring in the cold oven.
Heat-up speed 3–5 °C/min /37°F– 47°F per min.
1. Holding time at 250°C /482°F 90 mins.
2. Holding time at 880–910°C/1,616–1,670°F 10– 40 mins.
To obtain a highly accurate fit, the temperature setting
should be between 880°C /616°F und 910°C /670 °F and the
holding time between 10 and 40 minutes.
Important: Not all ovens can be accurately calibrated.
It may therefore be necessary to vary our recommended
temperature.
Stage 3:
When the final temperature has been reached, allow
the temperature to decline to the casting temperture of
430°C /806°F with the oven closed.
Allow the ring to adjust to the casting temperature of
430°C /806°F for approx. 30 minutes.
Availability
rematitan
®
Ultra investement material
7 kg container Ord.-No. 107-650-00
rematitan
®
Ultra mixing liquid
1 litre Ord.-No. 107-651-00
Quantity of Casting Metal
Single crowns/bridges up to 6 elements 22 g
Bridges of more than 7 elements 31 g
Very large bridges (14 elements) /
extensive supra constructions 36 g
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