Question

What is the amount of clay needed in green sand?

(a) 5% – 10%

(b) 5% – 15%

(c) 15% – 30%

(d) 25% – 40%

This question was addressed to me by my college director while I was bunking the class.

This intriguing question comes from Properties of Molding Sands in chapter Molding and Core Sands of Casting-Forming-Welding I

Answer 1

The correct answer is (c) 15% – 30%

The best I can explain: In green sand, the amount of clay needed in terms of percentage composition is approximately in between 15% to 30% and the amount of water needed in terms of percentage composition is somewhere around 5%.