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Which of the following is not a stage of mold preparation?

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in Engineering Material & Metallurgy by (773k points)
Which of the following is not a stage of mold preparation?

(a) Mixing

(b) Quenching

(c) Tempering

(d) Conditioning

This question was addressed to me during an interview for a job.

I would like to ask this question from Mold Making topic in chapter Testing of Materials, Foundry & Powder Metallurgy of Engineering Material & Metallurgy

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Correct option is (b) Quenching

The best explanation: Molding sand is prepared in three stages. The mixing stage involves the mixing of sand, binding, moisture, and additives. Then the sand is tempered by spraying and mixing water in the muller. Finally, the sand is conditions to remove foreign materials, aerating the sand, and other processes.

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