Question

Which of the following gating designs is used to avoid the splashing of the molten metal in the mould?

(a) Vertical gating

(b) Horizontal gating

(c) Inclined gating

(d) Bottom gating

I got this question during an interview.

Question is from Effects of Friction and Velocity Distribution topic in section Pouring – Gating Design, Melting Furnaces, Melting and Casting Quality of Casting-Forming-Welding I

Answer 1

The correct option is (d) Bottom gating

To elaborate: In the case of bottom gating design the liquid metal is filled in the mould from bottom to top, thus it avoids the splashing of the molten metal in the mould that can cause erosion. And this design also prevents the oxidation which is associated with the vertical gating.