Question

The axis of the cylindrical boss should be in the parting plane to have satisfactorily use of boss in casting.

(a) True

(b) False

I got this question during an interview.

Origin of the question is Product Design for Sand Castings in division Pouring – Gating Design, Melting Furnaces, Melting and Casting Quality of Casting-Forming-Welding I

Answer 1

Correct option is (a) True

For explanation I would say: Bosses are frequently used in order to provide longer bolt or tap holes in certain parts of the casting, this may be cast satisfactorily if the axis of the cylindrical boss is parallel to the direction in which the pattern is drawn out from the mould or if the centerline of the boss is in the parting plane.