Electric immersion furnaces can improve efficiency with a meter/holder, molten metal circulation and continuous degassing.


added oxides and gas. Consider an aluminum metalcaster with a central melting department that pays $1.30/lb. for its casting alloy. That caster can save 1% in metal loss by eliminating the turbulent


transfer from the melting furnace to the transfer ladle and the ladle to the holding furnace, on top of a 1% melt loss savings by switching from gas-fired to an electric reverb furnace in a casting cell. Theo-


retically, at 1,000 lbs. of aluminum melted/hour, this would save up to $30 an hour. Electric heated molten metal laun-


ders or channels deliver liquid metal from a main, centrally located melting


August 2013 MODERN CASTING | 27


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