Question

It is very safe to use Co2 in Co2 moulding, so it eliminates the use of any shielding apparatus.

(a) True

(b) False

I had been asked this question in an interview for job.

This interesting question is from CO2 Process topic in chapter Special Casting Techniques of Casting-Forming-Welding I

Answer 1

The correct option is (a) True

To explain I would say: In Co2 moulding, the process uses relatively safe carbon dioxide gas and it does not cause any of the sand disposal problems or any kind of odour while mixing and pouring. So the using of carbon dioxide gas is very safe to human operators. And so, no any equipment is required for the shielding.