Charge Well Furnace The charge well furnace model simulates melting in a 3 chamber furnace. The main furnace chamber is where heat is supplied by radiation from the refractories. Liquid metal is continuously pumped from the main chamber and through a pumping well, into the charge well. The charge well is initially fully liquid, but then a scrap charge is added, of specified mass and gauge. The model simulates the melting process, keeping track of the liquid temperatures in each chamber, as well as following the melting process of the added scrap. The simulation continues until the scrap is fully melted, and the main chamber melt temperature is restored to its initial value.
Furnace Hydrogen The furnace model calculates the evolution of dissolved hydrogen in a furnace load over time. The key variables are furnace size, alloy and melt temperature. The effects of different furnace treatment technologies can also be investigated (lancing and rotary gas injection).
Inline Degassing Model: Box-type This degassing model simulates a box-type in-line degasser. The user can configure the number of stages, and the number of rotors per stage. The degasser can either be sealed or unsealed from the external humidity. All the usual degasser parameters are variable (e.g. mass flow rate, argon flow rate, rotor speed). The model calculates the steady state level of dissolved hydrogen leaving each state of the degasser. This is a physically based model, which first calculates gas bubble numbers and sizes as a function of stirring intensity, and then determines both mass transfer to the gas bubbles and from the free surface to establish dynamic equilibrium for the system.
Inline Degassing Model: Trough-type This degassing model simulates a trough based in-line degasser. The user can configure the number of stages, and the number of rotors per stage. The degasser can either be sealed or unsealed from the external humidity. All the usual degasser parameters are variable (e.g. mass flow rate, argon flow rate, rotor speed). The model calculates the steady state level of dissolved hydrogen leaving each state of the degasser. This is a physically based model, which first calculates gas bubble numbers and sizes as a function of stirring intensity, and then determines both mass transfer to the gas bubbles and from the free surface to establish dynamic equilibrium for the system.
The filter model calculates filter efficiency as a function of inclusion size, based on basic filter parameters such as pore size and open porosity. It also calculates the required head of pressure both for filter priming, and for a prescribed metal flow rate in steady state.
Shell Formation The shell zone model calculates DC casting shell thickness based on key process variables including casting speed, metal level and alloy.