Question

The mould hardness measuring test is similar to _________

(a) Brinells Hardness test

(b) Vikers hardness test

(c) Rockwell Hardness test

(d) Sand Grain analysis

This question was addressed to me at a job interview.

My question comes from Moulding Sand Preparation and Conditioning topic in portion Pattern Materials & Moulding Sand Tests of Foundry and Forging

Answer 1

Right choice is (a) Brinells Hardness test

The explanation is: In a foundry, the mould hardness is measured by a method similar to Brinell hardness test. A spring loaded steel ball with a mass of 0.9 kg is indented into the standard sand specimen prepared. The depth of the indentation can be directly measured on the scale.