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_________ is produced with the help of heated iron/steel patterns.

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in Foundry and Forging by (110k points)
_________ is produced with the help of heated iron/steel patterns.

(a) Loam Mould

(b) Shell Mould

(c) Ceramic Mould

(d) Metal Mould

The question was posed to me in an online quiz.

The question is from Type of Sand Moulds in portion Sand Moulding of Foundry and Forging

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Right answer is (b) Shell Mould

To explain I would say: Shell mould is a mixture of fine sand and phenolic resin used to produce shells. Shells are assembled to form mould which is poured with molten metal. They give a good surface finish and dimensional accuracy. Hence they are produced with steel and iron.

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