Question

What will be the feeding distance (in inches) without using chill for a plate of thickness T?

(a) 4.5√T + 2

(b) 4.5√T

(c) 6√T+2

(d) 6√T

The question was posed to me in an interview for job.

This key question is from Riser Design topic in division Pattern and Mould, Principles of Gating & Risering of Casting-Forming-Welding I

Answer 1

Right answer is (b) 4.5√T

For explanation: Feeding distance will be equal to 4.5√T + 2 if we are using chill for a plate. For a bar, feeding distance will be 6√T without chill and 6√T +2 with chill. Thus, feeding distance will be equal to 4.5√T if we are not using chill during casting a plate.