Loading... (0%)

Pressovac Dual Pyrometer

The system used by our Pressovac series casting machines was specially developped for dental labs where casting perfection is absolute: casting pieces have a very smooth surface, a very dense molecular structure and without defects like unproper filling,porosity and shrinkage. Metal is inserted into the crucible and the flask positioned on the cradle inside the casting chamber.

CASTING CYCLE

The casting chamber is fully evacuated by vacuum before melting, followed by helium gas supply to create an inert atmosphere.Helium gas has an excellent gas fluidity which provides a cleaning effect of the molten metal and mould and guarantees a smooth filling of metal even of the most intricate patterns.The casting temperature is attained and low frequency pulses are given to vibrate and mix the molten metal by keeping it homogeneous. Temperature is controlled by an optical pyrometer up to 2100°C for platinum and steel and by an immersion type “S” thermocouple inside the graphite crucible up to 1450°C for gold,silver and bronze.

At this stage, just by pushing a button, the whole crucible/flask system will automatically rotate 90° and the metal, once poured in an homogeneous and controlled way into the flask, it is automatically pressurized to 4 bars by argon gas.This high and quick pressurization is indispensable to obtain a proper and homogeneous filling, even at low metal/flask temperatures, for gold, silver and bronze alloys and, above all, for platinum and special steels which have a very narrow melting interval, thus a very quick solidification. This results in a very smooth surface due to the effect of the vacuum and a dense, well compacted casting due to the “over pressure” of 4 bars, which benefits both thick and thin sections.

The “DUAL PYROMETER” version of our well-proven Pressovac machine features:

• Optical infrared pyrometer for platinum and steel casting up to 2100 °C
• Immersion-type “S” thermocouple for gold and silver casting up to 1450 °C

FEATURES OF THE PRESSOVAC SERIES

• Extremely robust water-cooled casting chamber

• Automatic tilt

• Rapid pressurization up to 3 bar, permitting lower metal and flask temperatures

COMPETITORS

Most of our competitors machines have relatively weak casting chambers which cannot, thus, be pressurized up to 4 bar; gas pressure has to be applied slowly to the molten metal after pouring.This necessitates significant raising of both flask and metal temperatures in order to achieve adequate filling, leading to porosity and rough surface problems due to these high temperatures. Also – the manual tilt which is also a feature of other machines can lead to inadequate filling due to slow pouring or, alternatively, metal spillage due this this being too rapid.

EXAMPLE OF MINISTRUCTURE

This compact machine, complete with oven and investment mixer,occupies no more than a space measuring 60 x 160 cms on a bench top and offers the facility of performing their own casting to goldsmiths, jewellery designers and small studios. An ideal way to produce individual castings from rapid-prototyping.

CRUCIBLES KITS

Kit Au

Au KIT

 

 A100.566  Graphite crucible cemented with its container for gold and silver (20 cc)
 A100.509  Lid cover for crucible
 A100.580  Graphite thermocouple sheath
 A083.051  Spare thermocouple type “S”
 P05046  Melting coil (3648)
 P05064  Crucible holding plate complete with crucible lid cover holder mechanism
KitPtPd

Pt/Pd/Steel KIT

 

 A100.559  Ceramic crucible for platinum (10 cc)
 A100.564  Silicon carbide crucible (20 cc)
 P05020  Melting coil (3645)
 P05097  Crucible holding plate complete with crucible lid cover holder mechanism
PRESSOVAC DUAL PYROMETER will be supplied outfitted with one kit choosen by customer
extra kits on request must be ordered separatly
Alimentazione / Electrical

Monofase / Singlephase 230 V – 50/60 Hz – 3,5 Kw

Volume Crogioli / Crucible Volume

Au/Ag – A100.566 (20 cc) Graphit
Pt – A100.559 (10 cc) Ceramic
Steel/Pd – A100.564 (20 cc) Silicon carbide

Crucible Life Time

Au/Ag – 90
Pt – 15
Steel/Pd – 10

Capacità Di Fusione / Melting Capacity

Pt min. 20 g – max. 110 g
Au min. 30 g – max. 250 g
Pd min. 30 g – max. 90 g
Ag min. 30 g – max. 220 g

Cilindri / Flasks Size

Ø min. 70 mm – Ø max. 90 mm
h min. 70 mm – h max. 90mm

Frequenza Di Lavoro / Working Frequency

70 kHz

Optical Control And Thermocouple

Pirometro ottico infrarosso (± 2% – 5%) per platino e acciaio fino a 2100°C – Termocoppia ad immersione tipo “S” fino fino a 1450°C per platino e argento/ Optical pyrometer infrared (± 2% – 5%) for Pt and Steel till 2100°C – Thermocouple “S” version till 1450°C for Pt and Ag

Max Temperature

2150°C

Raffreddamento / Water Cooling Supply

ad acqua demineralizzata con resistività maggiore di 20K ohm/cm – 3 l/m – 3 bar con impianto di raffreddamento a circuito chiuso (su richiesta cliente) / demineralized water with resistivity over 20K ohm/cm – 2 liters/minute – 3 bar with system of cooling closed circuit (optional)

Aria Compressa / Compressed Air Supply

6 – 8 bar

Gas / Inert Gas Supply

Elio, Argon, Azoto / Helium, Argon, Nitrogen

Pompa Vuoto Esterna / External Vacuum Pump

8 m³/h – 0,005 mbar

Dimensioni / Dimension

600 x 500 mm – h 580 mm

Peso / Weight

90 kg

Garanzia / Guarantee

12 mesi / 12 months

Brochure PRESSOVAC 2013 ING FRONTEBrochure PRESSOVAC 2013 ING FRONTE
Pressovac_IT@2Pressovac_IT@2
Pressovac_IT@1Pressovac_IT@1
Brochure PRESSOVAC 2013 ING RETROBrochure PRESSOVAC 2013 ING RETRO

Il tuo nome (richiesto)

La tua email (richiesto)

Oggetto

Il tuo messaggio

You may also like…