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Which of the following is the principal material used for Nobake moulding process?

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in Casting-Forming-Welding I by (687k points)
Which of the following is the principal material used for Nobake moulding process?

(a) Furan or Urethane

(b) Wood saw

(c) Clay-bentonite

(d) Water only

This question was addressed to me in an online interview.

Question is from Molding Processes in division Mold and Mold Making of Casting-Forming-Welding I

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The correct option is (a) Furan or Urethane

The explanation is: Nobake is a moulding process that involves the use of furan (chemical binders) to bond the moulding sand.

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