Question

What is the ratio of width to the depth of in-gates in general?

(a) 1:2

(b) 1:1

(c) 4:1

(d) 2:7

I have been asked this question in an international level competition.

I need to ask this question from Gating Design in section Pattern and Mould, Principles of Gating & Risering of Casting-Forming-Welding I

Answer 1

Right answer is (c) 4:1

For explanation I would say: In-gates are generally made wider compared to the depth, up to a ratio of 4. This facilitates in the severing of gating from the casting after solidification. And it reduces the actual connection between the in-gate and the castings so that the removal of the gating is simplified.