Casting Yield Calculator

Casting Yield Formula:

\[ Y = \frac{W_a}{W_m} \]

Casting Yield:

1. What is Casting Yield?

Definition: Casting Yield is the ratio of actual casting mass to total metal mass poured into the mould, expressed as a percentage.

Purpose: It measures the efficiency of the casting process by showing how much of the poured metal ends up in the final product.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ Y = \frac{W_a}{W_m} \times 100 \]

Where:

\( Y \) — Casting Yield (%)
\( W_a \) — Actual Mass of Casting (kg)
\( W_m \) — Total Mass of Metal Poured in Mould (kg)

Explanation: The actual casting mass is divided by the total metal mass poured, then multiplied by 100 to get a percentage.

3. Importance of Casting Yield

Details: Higher casting yield means less material waste and more efficient use of metal. Typical values range from 45% to 75% depending on the casting method.

4. Using the Calculator

Tips: Enter the actual mass of the finished casting and the total mass of metal poured into the mould. Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a good casting yield value?
A: Generally, 60-75% is considered good for sand casting, while investment casting can achieve 85-95%.

Q2: Why is casting yield important?
A: It directly impacts material costs and production efficiency. Higher yields mean less wasted metal.

Q3: How can I improve casting yield?
A: Optimize gating systems, reduce riser sizes, and improve pattern design to minimize metal waste.

Q4: Does this include machining allowance?
A: No, this calculates based on as-cast weight. Machining allowance would be additional material.

Q5: What causes low casting yield?
A: Excessive gating/risering, poor pattern design, or inefficient pouring practices can reduce yield.