Process for producing a grain refining master alloy
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United States of America Patent
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Aug 2, 2011
Grant Date -
Oct 9, 2008
app pub date -
Jan 23, 2006
filing date -
Nov 2, 2005
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Abstract
salts, pre-mixed in proportions to obtain a Ti/B ratio of 5 in the melt, gently mixing the salt mixture with the melt without introducing any stirring, transferring the molten alloy to an electric resistance furnace maintained at 800 degrees Celsius, decanting the K—Al—F salt, the by-product of the salt reaction, thoroughly stirring the molten alloy in the SiC crucible with graphite rods before finally casting the molten alloy into cylindrical molds in the form of billets and finally extruding the billet into 9.5 mm rods.
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