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Which of the following is not valid for rocking furnace operation?

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in Casting-Forming-Welding II by (119k points)
Which of the following is not valid for rocking furnace operation?

(a) Causes overheating

(b) Uniform composition of melt

(c) Damage to the refractory lining

(d) Fast melting

This question was addressed to me during an online interview.

This question is from Rocking Furnace topic in section Metal Furnace and Practice of Casting-Forming-Welding II

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Right choice is (a) Causes overheating

To explain: In an indirect electric arc furnace, the rocking of furnace causes the melting to speed up, it also causes uniform composition of melt and does some damage to the refractory lining. This process does not cause overheating, instead it avoids it.

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