Apparatus and method for metal surface inertion by backfilling
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United States of America Patent
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Jan 13, 2015
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app pub date -
Oct 26, 2011
filing date -
Oct 26, 2011
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Abstract
The disclosure provides a method and apparatus for inerting the surface of a metal charge in an induction furnace. The process generally involves use of a porous plug positioned near the surface of the metal charge. Argon (or other blanket gases) is flushed through the porous plug to back fill the volume of the induction furnace above the metal charge with an inert gas.
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