Method and apparatus for pouring molten metal
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United States of America Patent
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Sep 29, 1981
Issued Date -
N/A
app pub date -
Mar 28, 1980
filing date -
Sep 13, 1977
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A metal stream is protected from atmospheric contamination during casting by shrouding it with an inert gas from a gas source at the pour nozzle. The gas is supplied to a low turbulence zone at the nozzle which has a width at least one third of the length of the poured metal stream. The gas source may be an annulas surrounding the nozzle and having its inwardly and downwardly facing surfaces of perforated metal sheet and the outermost surfaces may be disposable in order to tolerate metal splashing. The need for a tube to enclose the protective gas is avoided.
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