Bellavest ® SH
Shock-heat or conventionally heatable, phosphate-bonded precision casting investment material for all crowns, bridges and pressable / press-to-metal ceramics
en
Preheating
Shock heating
|
Shock |
Conventional |
|
heating |
heating |
Setting time after investment |
20 – 30 minutes |
at least 30 minutes |
Insertion temperature |
900 ° C / 1,650 ° F |
Room temperature( or 250 ° C / 500 ° F)* |
Holding level |
– |
250 ° C / 500 ° F( with 5 ° C( 9 ° F)/ min)** 0 |
Final temperature |
|
250 ° C / 500 ° F( with 7 ° C( 12 ° F)/ min)** |
Precious metal |
700 ° C / 1,290 ° F |
700 ° C / 1,290 ° F |
Precious metal-to-ceramic alloys |
850 ° C / 1,560 ° F |
850 ° C / 1,560 ° F |
Non-precious metal |
900 ° C / 1,650 ° F |
900 ° C / 1,650 ° F |
Pressable ceramics |
up to 900 ° C / 1,650 ° F( Follow manufacturer’ s instructions!) |
Hold times for holding level |
30 – 60 minutes |
and final temperature |
( depending on size and number of moulds) |
*/** Only for furnaces with conventional control / with computer control.
Press-to-metal ceramics: for pressing to non-precious metal alloys, preheat Bellavest ® SH moulds rapidly only; for precious-metal alloys, preheat normally or rapidly!
Only for mould sizes 1 to 6 • Roughen mould bottom slightly after setting • Place moulds upright in the furnace( funnel former facing down) and without direct contact to the heating source( use spacer or ceramic plate) • Always comply with setting time and insertion temperature!
Risk of injury in connection with shock heating! Place all moulds in the furnace within 10 seconds and then keep the furnace door closed for 15 minutes!
Inserting further moulds leads to temperature decrease and thus to considerable extension of the preheating process.
After casting
Data
Availability and recommendations
After casting / pressing allow the moulds to cool down until warm to the touch, in a protected and designated location, do not quench in water! Investment materials contain quartz. Do not inhale dust! Danger of lung damage( silicosis, lung cancer). To avoid dust during deflasking, place the moulds in water, once they have cooled down completely after casting, until they are thoroughly moistened.
BegoSol ® HE |
|
50 % |
80 % |
Available working time at 20 ° C / 70 ° F |
approx. 5 min |
approx. 4.5 min |
Total expansion |
1.7 % |
2.2 % |
Minimum shelf life |
2 years |
Characteristic material values in |
accordance with DIN EN ISO 15912 |
Beginning of setting( Vicat time) |
approx. 10.5 min |
approx. 10 min |
|
Compressive strength
( after 2 hours)
|
4.2 MPa |
5.1 MPa |
Linear thermal expansion |
0.8 % |
0.9 % |
This product was made according to the specifications of DIN EN ISO 15912 and meets its requirements in all respects.
Expansion [%]
4 3,5 3 2,5 2 1,5 1 0,5 0
Expansion curve Bellavest ® SH
0
10 20 30 40 50 60 70 75 80 85 90 95 100 BegoSol HE [%]
Carton |
Carton |
Bellavest ® SH |
90 g bag |
12.96 kg( 144 bags) |
– 54257 |
100 g bag |
5.0 kg( 50 bags) |
– 70060 |
|
|
160 g bag |
4.8 kg( 30 bags) |
– 54247 |
12.8 kg( 80 bags) |
– 54252 |
BegoSol ® HE |
1000 ml( 1 bottle) |
– 51095 |
5000 ml( 1 canister) |
– 51096 |
6
Whether given verbally, in writing or by practical instructions, our recommendations for use are based upon our own experience and trials and can only be considered as standard values. Our products are subject to constant further development. Therefore alterations in construction and composition are reserved.
Info: Phone + 49 421 2028-380 www. bego. com
Aurofilm |
( 100 ml) |
52019 |
BEGO metal mould rings |
BEGO base socket former |
Size 3 |
( 4 pieces) |
52422 |
Size 3 |
( 4 pieces) |
52627 |
Size 6 |
( 4 pieces) |
52423 |
Size 6 |
( 4 pieces) |
52628 |
Size 9 |
( 4 pieces) |
52424 |
Size 9 |
( 4 pieces) |
52629 |
|
|
|
Manufacturer
Batch code
Catalogue number
Use-by-date
BEGO fleecy inlay strip |
40 mm |
( 3 x 30 m) |
52409 |
45 mm |
( 3 x 30 m) |
52408 |
Consult instructions for use
BEGO Bremer Goldschlägerei Wilh. Herbst GmbH & Co. KG · Wilhelm-Herbst-Str. 1 · 28359 Bremen, Germany · Tel. + 49 421 2028-0 · Fax + 49 421 2028-100 · www. bego. com
Caution
REF 13003 / 19 · HdW 5995 · © 2016 by BEGO · 20160831