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The image above represents time of pouring.

To compute for time of pouring, three essential parameters are needed and these parameters are Constant (P), Co-efficient used to Account for Wall Thickness (S) and Mass of Casting with Gates and Risers (G).

The formula for calculating time of pouring:

t = S√(2PG)

Where:

t = Time of Pouring
P = Constant
S = Co-efficient used to Account for Wall Thickness
G = Mass of Casting with Gates and Risers

Let’s solve an example;
Find the time of pouring when the constant is 0.62, the co-efficient used to account for wall thickness is 17 and the mass of casting with gates and risers is 21.

This implies that;

P = Constant = 0.62
S = Co-efficient used to Account for Wall Thickness = 17
G = Mass of Casting with Gates and Risers = 21

t = S√(2PG)
t = 17 x √(2 x 0.62 x 21)
t = 17 x √(26.04)
t = 17 x 5.10
t = 86.7

Therefore, the time of pouring is 86.7 s.

Calculating the Co-efficient used to Account for Wall Thickness when the Time of Pouring, the Constant and the Mass of Casting with Gates and Risers is Given.

S = ^t / _√(2PG)

Where;

S = Co-efficient used to Account for Wall Thickness
t = Time of Pouring
P = Constant
G = Mass of Casting with Gates and Risers

Let’s solve an example;
Find the co-efficient used to account for wall thickness when the time of pouring is 20, the constant is 0.62 and the mass of casting with gates and risers is 18.

This implies that;

t = Time of Pouring  = 20
P = Constant = 0.62
G = Mass of Casting with Gates and Risers = 18

S = ^t / _√(2PG)
S = ²⁰ / _{√(2 x 0.62 x 18)}
S = ²⁰ / _√(22.32)
S = ²⁰ / _4.724
S = 4.23

Therefore, the co-efficient used to account for wall thickness is 4.23.

Calculating the Mass of Casting with Gates and Risers when the Time of Pouring, the Constant and the Co-efficient used to Account for Wall Thickness is Given.

G = (^t / _S)² x ¹ / _2P

Where;

G = Mass of Casting with Gates and Risers
t = Time of Pouring
P = Constant
S = Co-efficient used to Account for Wall Thickness

Let’s solve an example;
Find the mass of casting with gates and risers when the time of pouring is 12, constant is 0.62 and co-efficient used to account for wall thickness is 14.

This implies that;

t = Time of Pouring = 12
P = Constant = 0.62
S = Co-efficient used to Account for Wall Thickness = 14

G = (^t / _S)² x ¹ / _2P
G = (¹² / ₁₄)² x ¹ / _{2 x 0.62}
G = (0.85)² x ¹ / _1.24
G = 0.7225 x 0.806
G = 0.582

Therefore, the mass of casting with gates and risers is 0.582.

Nickzom Calculator – The Calculator Encyclopedia is capable of calculating the time of pouring.

To get the answer and workings of the time of pouring using the Nickzom Calculator – The Calculator Encyclopedia. First, you need to obtain the app.

You can get this app via any of these means:

Web – https://www.nickzom.org/calculator-plus

To get access to the professional version via web, you need to register and subscribe for NGN 1,500 per annum to have utter access to all functionalities.
You can also try the demo version via https://www.nickzom.org/calculator

Android (Paid) – https://play.google.com/store/apps/details?id=org.nickzom.nickzomcalculator
Android (Free) – https://play.google.com/store/apps/details?id=com.nickzom.nickzomcalculator
Apple (Paid) – https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8
Once, you have obtained the calculator encyclopedia app, proceed to the Calculator Map, then click on Materials & Metallurgical under Engineering.

Now, Click on Foundry Technology under Material & Metallurgical

Now, Click on Design of Gating System under Foundry Technology

Now, Click on Time of Pouring under Design of Gating System

The screenshot below displays the page or activity to enter your values, to get the answer for the time of pouring according to the respective parameters which are the Constant (P), Co-efficient used to Account for Wall Thickness (S) and Mass of Casting with Gates and Risers (G).

Now, enter the values appropriately and accordingly for the parameters as required by the Constant (P) is 0.62, Co-efficient used to Account for Wall Thickness (S) is 17 and Mass of Casting with Gates and Risers (G) is 21.

Finally, Click on Calculate

As you can see from the screenshot above, Nickzom Calculator– The Calculator Encyclopedia solves for the time of pouring and presents the formula, workings and steps too.