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What is the function of slag hole in a cupola furnace?

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in Casting-Forming-Welding I by (687k points)
What is the function of slag hole in a cupola furnace?

(a) To tap the slag generated

(b) To generate the slag

(c) To allow outflow of gases

(d) All of the mentioned

I had been asked this question in an international level competition.

The doubt is from Furnaces for Melting in chapter Pouring – Gating Design, Melting Furnaces, Melting and Casting Quality of Casting-Forming-Welding I

1 Answer

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Best answer
Right option is (a) To tap the slag generated

Explanation: Slag hole is a tapping hole in a cupola furnace. Through which slag generated during the melting process is tapped.

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