Foundry & Forging calculator
Casting Weight Variation Calculator
Compare casting weight spread against nominal casting weight to monitor process variation. Use it when pattern wear, sand compaction, core shift, gating changes, machining stock, or metal feed affects casting weight consistency.
What this calculator does
- Compare casting weight spread against nominal casting weight to monitor process variation.
- Use it when pattern wear, sand compaction, core shift, gating changes, machining stock, or metal feed affects casting weight consistency.
- Tracks casting weight consistency.
Formula used
- Casting Weight Variation range = highest casting weight measured - lowest casting weight measured
- Casting Weight Variation delta to target = midpoint - nominal casting weight
Inputs explained
- Highest casting weight measured: Enter maximum casting weight from the sample, lot, heat, or inspection record.
- Lowest casting weight measured: Enter minimum casting weight from the same sample and measurement method.
- Nominal casting weight: Use drawing, process standard, customer spec, or routing nominal weight.
How to use the result
- Use for inspection, SPC, and process control.
- This calculator is an estimating tool. Results can change with alloy chemistry, furnace practice, ladle losses, mold design, gating and riser layout, core condition, pattern allowance, die temperature, press condition, inspection criteria, rework rules, energy rates, labor standards, and actual shop performance. Validate safety-critical, metallurgical, tooling, press-capacity, and customer-spec decisions with qualified engineering, metallurgy, OEM data, and the applicable control plan.
Common questions
- What information do I need before using the Casting Weight Variation? Use high, low, and nominal casting weights from the same sample and units.
- What does the result mean? It shows weight range, midpoint, and delta to nominal.
- When is the result only an estimate? This calculator is an estimating tool. Results can change with alloy chemistry, furnace practice, ladle losses, mold design, gating and riser layout, core condition, pattern allowance, die temperature, press condition, inspection criteria, rework rules, energy rates, labor standards, and actual shop performance. Validate safety-critical, metallurgical, tooling, press-capacity, and customer-spec decisions with qualified engineering, metallurgy, OEM data, and the applicable control plan.
- What decision can I make from the result? Use it to detect process drift, excess metal, core shift, or machining allowance problems.
Last reviewed 2026-05-12.