Question

In casting system, the riser is generally placed at the heaviest section to avoid defects from the casting.

(a) True

(b) False

The question was posed to me during an interview for a job.

I need to ask this question from Riser Placement topic in chapter Cooling and Solidification of Casting-Forming-Welding I

Answer 1

Correct option is (a) True

To explain: In the casting system, the risers must be placed at the heaviest sections to obtain better casting free from defects. And because the heavier sections, themselves act as feeders for the thin sections of the casting, and variations in the volume of riser should be done if the shape and size of casting sections also vary.