Question

Blind risers promote directional solidification better than the open risering.

(a) True

(b) False

The question was asked during an internship interview.

This question is from Types of Risers in division Concept of Gating and Risering of Foundry and Forging

Answer 1

Right option is (a) True

Easy explanation: The height of the riser is determined not by the feeding requirements but by the depth of the molding box used. In the case of blind riser these aspects could be varied so it has better solidification than open risering. A blind riser will draw directional solidification from liquid metal from the solidifying casting.