Russia’s Uralmash-Izhora Group’s (OMZ) Special Steels
operation recently cast a steel forging ingot weighing 124.2 tons at the
Izhorkiye Zavody plant in St. Petersburg. The ingot was cast using a siphon
method in which molten metal is siphoned up from the bottom of the ingot mold
cavity. The relatively non-turbulent mold filling method improves the quality
of the steel ingot, which was cast by siphoning metal up into the ingot mold
using negative pressure in an argon atmosphere to prevent oxidation. The use of
inert argon obviates the need to use a vacuum casting process.
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Check out the April 2021 issue of FORGE, featuring our cover story on the "Ovako's Vacuum Degassing Process Improves Forging-Steel Grades", "Back to the Future: Revisiting AM Predictions from 2012", "Viral Marketing during COVID-19", and much more.