Grey Cast Iron, Mass less than 450 kg Calculator

Pouring Time Formula:

\[ t_{pt} = \frac{F}{40} \times \left(1.41 + \frac{T_c}{14.59}\right) \times \sqrt{W} \]

Pouring Time (seconds):

1. What is Grey Cast Iron Pouring Time Calculator?

Definition: This calculator estimates the pouring time required for grey cast iron with mass less than 450 kg based on fluidity, section thickness, and casting mass.

Purpose: It helps foundry professionals determine optimal pouring time for cast iron components to ensure proper mold filling and casting quality.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ t_{pt} = \frac{F}{40} \times \left(1.41 + \frac{T_c}{14.59}\right) \times \sqrt{W} \]

Where:

\( t_{pt} \) — Pouring time (seconds)
\( F \) — Fluidity of iron (meters)
\( T_c \) — Average thickness of section (meters)
\( W \) — Mass of casting (kilograms, must be ≤ 450 kg)

Explanation: The formula accounts for metal fluidity, casting geometry, and mass to determine optimal pouring duration.

3. Importance of Pouring Time Calculation

Details: Proper pouring time ensures complete mold filling, minimizes turbulence, and reduces casting defects like cold shuts or misruns.

4. Using the Calculator

Tips: Enter fluidity in meters, average section thickness in meters, and casting mass in kilograms (must be ≤ 450 kg). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is there a 450 kg mass limit?
A: The formula is specifically validated for grey cast iron castings under 450 kg. Different formulas may be needed for larger castings.

Q2: What affects fluidity of iron?
A: Fluidity depends on temperature, composition (carbon equivalent), and inoculation. Higher temperatures increase fluidity.

Q3: How is average section thickness determined?
A: Measure thickness at several points of the casting and calculate the average value.

Q4: What's the ±5% tolerance for?
A: It accounts for normal variations in material properties and measurement accuracy.

Q5: Can this be used for other metals?
A: No, this formula is specifically for grey cast iron. Other alloys require different calculations.