–
Place restorations such that unimpeded
sintering shrinkage may take place.
–
Place restorations such that they do not
touch the sintering tray, as this would
damage the restorations and the tray.
–
Crypton sintered beads will turn grey when sintering
in an argon atmosphere. This is a desired effect.
–
For new sintering beads, perform an initial a
sintering cycle with argon but with no restorations.
Finishing the sintered framework
Crypton for inLab frameworks should be finished
exclusively with cross-cut or spiral-cut tungsten-carbide
cutters suitable for use with CoCr. Keep the pressure on
the framework material to a minimum and work only in
one direction.
Sandblast the outside of the framework with aluminium
oxide (250 µm, 3 – 4 bar) and then clean it using a steam
cleaner.
Note
–
Sandblasting the Crypton for inLab
frameworks will improve their quality.
–
Use only pure abrasive.
–
Use only abrasive of the recommended
granularity (250 µm).
–
Apply the abrasive at the recommended
7 Soldering and laser welding
Soldering
Before firing:
Flux:
Laser welding
Crypton laser welding wire
Degudent- solder U1W (1 120°C)
Ceramco White solder (1140 °C)
Oxynon
pressure (3 – 4 bar).
–
Apply the abrasive from the
recommended angle (45°).
–
Check the nozzle of your sandblasting unit
from time to time because it may be enlarged
by the abrasive passing through it, reducing
the sandblasting speed and pressure.
Veneering
As you proceed to veneering the framework with a
ceramic veneering material, make sure to follow the
Instructions for Use of the veneering material you prefer,
which must be appropriate for the framework material!
Note
Oxide firing is not required for Crypton for inLab
frameworks.
When veneering Crypton for inLab frameworks with
Duceram Plus, Duceram Kiss, Duceram love, StarLight
Ceram, Ceramco 3 or CeramcoiC, apply a thin but
covering layer of NE Bonder and fire at 980°C.
(Please refer to the following brochures: Duceram Kiss
Processing Instructions for non-precious alloys;
Duceram love Guidelines for veneering non-precious
alloys; StarLight Ceram NE Bonder Guidelines)
It is recommended to steam down and rinse the
framework after each firing and to sandblast it if
appropriate.
Crypton
for inLab |
15
®