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RPM is only used for castings of which of the following material?

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in Casting-Forming-Welding I by (687k points)
RPM is only used for castings of which of the following material?

(a) Ferrous metals

(b) Non-ferrous Metals

(c) Plastics

(d) Silicone

I had been asked this question during an interview.

My question comes from Molding Processes topic in section Mold and Mold Making of Casting-Forming-Welding I

1 Answer

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Best answer
Correct choice is (b) Non-ferrous Metals

The best I can explain: Rubber Plaster Moulding process is used for making mould that can only be used for producing non-ferrous castings like copper and aluminum based alloys.

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