1. What is the Castings Pouring Time Calculator?

Definition: This calculator estimates the pouring time required for castings between 450 kg and 1000 kg based on empirical data.

Purpose: It helps foundry professionals determine optimal pouring times for medium-sized castings to ensure quality and efficiency.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( t_{pt} \) — Pouring time (seconds)
• \( K_4 \) — Empirical constant (typically 2.63 for these casting sizes)
• \( W_m \) — Total mass of metal poured (kg, between 450-1000)
• \( T_c \) — Average thickness of section (mm)

Explanation: The formula accounts for both the mass of metal and section thickness to determine optimal pouring rate.

3. Importance of Accurate Pouring Time

Details: Proper pouring time prevents defects like cold shuts, misruns, and inclusions while ensuring complete mold filling.

4. Using the Calculator

Tips: Enter the empirical constant (default 2.63), metal mass (450-1000 kg), and average thickness (mm). All values must be positive.

5. Frequently Asked Questions (FAQ)

Q1: Why is there a ±5% tolerance?
A: The 5% accounts for variations in metal temperature, mold conditions, and operator technique.

Q2: What affects the empirical constant K₄?
A: K₄ varies with metal type (steel, iron, aluminum), pouring temperature, and mold material.

Q3: How is average thickness determined?
A: Calculate the mean thickness of all sections in the casting, weighted by their volumes.

Q4: Why the 450-1000 kg range limit?
A: Different empirical formulas apply to smaller or larger castings due to varying heat transfer dynamics.

Q5: Can I use this for non-ferrous metals?
A: The formula works best for steel and iron. For aluminum or copper, consult specific foundry data.

Castings above 450 kg and up to 1000 kg Calculator© - All Rights Reserved 2025