Countergravity casting apparatus and desulfurization methods
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United States of America Patent
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Sep 6, 2022
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N/A
app pub date -
Oct 11, 2019
filing date -
Oct 27, 2017
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Abstract
An apparatus for countergravity casting a metallic has: a crucible for holding melted metallic material; a casting chamber for containing a mold; a fill tube capable of extending into the crucible to communicate melted metallic material to the casting chamber; and a gas source coupled to a headspace of the melting vessel to allow the gas source to pressurize said headspace to establish a pressure differential to force the melted metallic material upwardly through said fill tube into the mold. Added sulfur-gettering particles subsequently filtered or sulfur-gettering material removes sulfur from the melted metallic material.
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