Dynamic cavity temperature control requires no water
Compression, proximity let gas work as heating medium
Cooling with CO2 has been sufficiently tested and is well-known. The high enthalpy of evaporation of the injected fluid accompanied by a temperature of -76C offers an extremely efficient heat transfer. As far as cooling of long and thin cores or of narrow bars is concerned, cooling with CO2 has already been applied with great success for many years. Now heating is also possible with gaseous CO2.
Compressed to a suitable pressure and heated close to the mould cavity, the teco vario gt developed by gwk has shown to have excellent heat transfer characteristics and has none of the deposits or corrosion that can form through the use of water and hot steam. These factors make CO2 ideal for dynamic temperature control. The high temperature gradient between hot and cold media is unique and promises minimum cycle times.