Question

When compared to sand, how much effective is garnet as abrasive material in AWJM?

(a) 20%

(b) 30%

(c) 40%

(d) 50%

I have been asked this question at a job interview.

This intriguing question comes from AWJM in chapter Mechanical Processes of Advanced Machining

Answer 1

Correct option is (b) 30%

For explanation I would say: Garnet, which is commonly used abrasive material is nearly 30% more effective than sand in Abrasive water jet machining.