ahi materjali metalli sulatamiseks metalsest lähtematerjalist, nt toormalm, teras, alumiiniumisulamid jms (vrd väljasulatusahi)
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Tööstuslik ahi valumetalli sulatamiseks. Näiteks vagranka, elektrikaarahi, induktsioonahi jne. (vt valumetall)
a furnace capable to heat materials, in particular metals (pig iron, steel, aluminium alloys etc) to such a high temperature that they melt (compare: smelting furnace)
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Industrial furnace used to melt cast metal. Examples of melting furnaces are cupola, electric arc furmace, electric induction furnace etc. (see: cast metal)
