For the best experience using our website, we recommend upgrading your browser to a newer version or switching to a supported browser.
| Material | Cost/kg | C% | Si% | Notes | | :--- | :--- | :--- | :--- | :--- | | Pig Iron (K1) | $0.70 | 4.2 | 1.0 | High purity | | Returns | $0.15 | 3.5 | 2.6 | Used, but has Mg residue | | Steel Scrap | $0.30 | 0.2 | 0.2 | Clean punchings | | FeSi (75%) | $1.20 | 0 | 75 | Adjustment |
: Modern foundries often use software programs to find the optimal mix by formulating linear programming models that account for both the target chemistry and the current market price of each material. 4. Basic Calculation Steps Define Target Composition Foundry Charge Calculation
: Re-melted gates, risers, and defective castings from previous pours within the same foundry. Ferro-Alloys | Material | Cost/kg | C% | Si%
: Multiply the initial charge amount by an "operational recovery" or "yield" factor to account for material lost during the melt (typically 2% to 5% depending on the material). Calculate Component Mass Ferro-Alloys : Multiply the initial charge amount by
A foundry produces 500 kg heats of Ductile Iron (Grade 65-45-12). Target: C=3.6%, Si=2.5% (pre-magnesium treatment). They have:
Achieving the target chemical composition (e.g., carbon, silicon, manganese) ensures the mechanical properties of the finished part are within specified tolerances.
