Comparison of Fusion with VITRIOX GAS and VITRIOX ELECTRIC

Technical Differences

In the case of the gas-based VITRIOX GAS, the crucible and the casting dishes are heated from below by a flame. The flame is formed from gas (propane, butane, natural gas) and oxygen (compressed air and oxygen). The relationship  between gas/air/oxygen ultimately determines the temperature of the flame and therefore the temperature in the crucible. It is important that each burner is individually adjustable so that the temperature for each burner can be set exactly. This is equally true for crucible burners as well as for die burners. There is no direct temperature measurement, but the gas flow is regulated so that even for a fluctuating inlet pressure, exactly the same amount of gas is always directed to the burner; leading to a higher temperature stability. The temperature is indirectly determined from the melting point of pure lithium tetraborate. The rule is that 9 g lithium tetraborate (FX-xlOO) melts in 4 minutes.