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Hold-times and steps of program controlled preheating
Program level
1
2
3
* Room temperature
Investing
Initial De-vesting
Remove with glass beads 50 microns, 4 bar, the investment until short distance before the press objects.
Do not uncover the objects.
De-vesting
Before reaching the pressed object reduce the air pressure down to 1.5 bar and proceed with sandblasting.
GB
Note: Avoid high speed punctual blasting to prevent overheating!
- 8 -
Note lithium disilicate:
Pressing lithium disilicate material creates a reaction layer with the investment.
To eliminate this reaction layer please refer to the Instructions for use of IPS e.max Press from Ivoclar.
Precautions
• Do not open the furnace during the wax burnout phase.
• Investments contain quartz. Do not inhale the dust! Risk of lung damage (silicosis, lung cancer).
Recommendation: Wear a protective face mask, type FFP 2 EN 149:2001.
Prevent the release of dust when opening the bag and filling the mixing bowl.
• Rinse the empty bag with water before crumpling it up.
• Always moisten any dust before removing it from the workplace.
• Use an extractor with a fine dust filter when sandblasting.
We always attempt to include the latest results for our investment materials (development and application) in the
instructions. Excellent precision of fit and surfaces are achieved with Heraeus Kulzer equipment and materials. The
results may vary if other materials (e.g. casting ring liners, waxes, equipment etc.) or different techniques are used.
Temperature
ca. 23°C * – 270°C (73°F * – 518°F)
270°C – 580°C (518°F – 1076°F)
580°C – 850°C (1076°F – 1562°F)
Heating rate
Holding time (min) and usable ring size
(°C / min)
100 g ring
8
30
8
30
8
60
200 g ring
40
40
60
Dated: 2015-01
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