Question

A grinding wheel is 20 cm in diameter, 2.5 cm thick, and weights 2.2 kg. The wheel contains SiC (density of 3.0 gr/cm3 ) bonded by silica glass (density of 2.5 gr/cm3 ). 5 volume percent of the wheel is pores (density ≈ 0). The SiC is in the form of 0.025 cm cubes.

Calculate:

(a) The volume fraction of SiC particles in the wheel.

(b) The number of SiC particles lost from the wheel after it is worn to the diameter of 18 cm.

Answer 1

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