Question

In casting system, the riser is located at the lightest section to avoid any disturbance.

(a) True

(b) False

I got this question in final exam.

The query is from Riser Design topic in section Pattern and Mould, Principles of Gating & Risering of Casting-Forming-Welding I

Answer 1

Right option is (b) False

Easiest explanation: In the casting system, the risers should be located at the heaviest sections to achieve a better casting with fewer defects, and because the heavier sections, themselves act as feeders for the thin sections. And variations in volume of riser must be done if the size of casting sections also varies.