The image above represents time of pouring. To calculate 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)
So, t = 17 x √(26.04)
t = 17 x 5.10
t =Â 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 are 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.
Master Every Calculation Instantly
Unlock solutions for every math, physics, engineering, and chemistry problem with step-by-step clarity. No internet required. Just knowledge at your fingertips, anytime, anywhere.
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)
Then, S = 20 / √(22.32)
S = 20 / 4.724
S = 4.23
Therefore, the co-efficient used to account for wall thickness is 4.23.
Read more:Â How to Calculate and Solve for Total Cross-Sectional Area of Gates | Design of Gating System
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 are 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
Then, 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.
How to Calculate Time of Pouring in the Design of Gating System
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
Then, 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.
