Question

Chromite sand requires the least amount of binders.

(a) True

(b) False

The question was posed to me in final exam.

The above asked question is from Moulding Sand Binders and Additives in chapter Pattern Materials & Moulding Sand Tests of Foundry and Forging

Answer 1

The correct choice is (a) True

For explanation I would say: Chromite sand is crushed from the chrome ore. As the fusion point of this sand is high as 1800 C, it requires a small amount of binder (3%). It is also used to manufacture heavy steel castings requiring a better surface finish.