SKU: aseg-galloni-pressovac-jewellery
Pressovac Jewellery

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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.

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CASTING CYCLE is fully automatic..

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.

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

•Electrical:Monofase / Singlephase 230 V – 50/60 Hz – 3,5 kW
•Crucible Volume:10 cc
•Melting Capacity:
  Au 24 kt min. 5 g – max. 180 g
  Au 18 kt min. 5 g – max. 110 g
  Ag min. 30 g – max. 100 g
  Steel min. 10 g – max. 110 g
  Pt min. 15 g – max. 110 g
•Flasks:
  Ø min. 30 mm – Ø max. 90 mm
  h min. 55 – max. 90 mm
•Working Frequency:70 kHz
•Max Temperature:2.150 °C
•Optical Control:Pirometro ottico infrarosso (± 2% – 5%) / Optical pyrometer infrared (± 2% – 5%)
•External Vacuum Pump:con pompa esterna 8m³/h – 0,005 mbar / with external vacuum pump 8m³/h – 0,005 mbar
Cooling Water Supply:ad acqua demineralizzata con resistività maggiore di 20K ohm/cm – 3 l/m – 3 bar con impianto di raffreddamento a circuito chiuso / demineralized water with resistivity over 20K ohm/cm – 2 liters/minute – 3 bar with system of cooling closed circuit
•Compressed Air Supply:6 – 8 bar
•Inert Gas Supply:Elio, Argon, Azoto / Helium, Argon, Nitrogen
•Dimensions:base 600 x 500 mm – h mm 580 mm
•Weight:90 kg
•Guarantee:12 months

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Pressovac Dual Pyrometer

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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.

由於單價較高,預下單購買或索取報價者,請先與我們聯絡。

Read More