Sand Casting Simulator — Pour, Solidification & Cooling Interactive

Tilt a ladle into a sprue and runner feeding a cutaway sand mold. After filling, follow sensible cooling, an isothermal solidification plateau and cooling of the solid casting.

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About the Sand Casting Simulator

Tilt a ladle into a sprue and runner feeding a cutaway sand mold. After filling, follow sensible cooling, an isothermal solidification plateau and cooling of the solid casting.

What the simulator shows

• A 3D process cutaway of pouring, latent-heat solidification and cooling in a sand mold, with labeled components you can select. • Controls: Pour rate (0.1-0.5 L/s), Aluminum-like pour temperature (680-820 °C), Mold temperature (20-200 °C), Liquid sensible-cooling time constant (10-60 s). • Live readouts: Cavity filled; Lumped casting temperature; Solid fraction; Physical time; Cavity + gating fill time; Fill time exceeds cooling-window estimate. • Three guided experiments (Latent-heat plateau, Warm mold, Slow, low-superheat fill), a built-in model verification check, a timestamped event log, a trial report and a short knowledge check.

Equations used

Tm = 660 °C, latent heat L = 397 kJ/kg Liquid cp = 1.1 kJ/(kg·K); heat-transfer coefficient per mass k = cp/τ Liquid cools exponentially to Tm; plateau duration = L/[k(Tm−Tmold)] Solid cp = 0.9 kJ/(kg·K); animation time × 5 = physical seconds.

Model limits

Generic aluminum-like lumped thermal model. Cooling begins after filling; a separate approximate liquid-window comparison flags long-fill risk, not a CFD cold-shut prediction. No fluid turbulence, porosity, shrinkage stress or alloy freezing range. Dimensions, motion and process time are enlarged where stated for explanation. These are educational models, not machine programs or qualified production procedures.

Frequently asked questions

Can solidification proceed while temperature stays constant?

Yes, latent heat is released. The pure-material approximation uses a melting-temperature plateau.

Does the color show a computed local freezing front?

No, it is an overlay of bulk solid fraction. This is a lumped thermal model rather than a spatial solver.

What does the Sand Casting simulator not model?

Generic aluminum-like lumped thermal model. Cooling begins after filling; a separate approximate liquid-window comparison flags long-fill risk, not a CFD cold-shut prediction. No fluid turbulence, porosity, shrinkage stress or alloy freezing range. These are educational models, not machine programs or qualified production procedures.

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