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Which of the following molding methods have the least production rate?

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in Casting-Forming-Welding I by (687k points)
Which of the following molding methods have the least production rate?

(a) Squeezing

(b) Jolt and squeezing

(c) Jolting

(d) Hand molding

I got this question in an internship interview.

I'd like to ask this question from Methods of Ramming Mold Boxes in chapter Mold and Mold Making of Casting-Forming-Welding I

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Right answer is (d) Hand molding

Explanation: In hand molding operation the force required for ramming the mold is applied by human hand thus the time taken for making the mold is longer. This leads to the least production rate when compared with the above processes. Whereas in other methods machines are used reducing the production time.

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