Back to results
US 8,297,340 B2Granted
Method of producing ductile iron
AssigneeFoseco International Limited
InventorEmmanuel Berthelet
Life of this patent
Estimating the term…
Abstract
Process for producing ductile iron by treating liquid iron with an initializer which is a ferrosilicon alloy comprising an effective amount of barium sufficient to inactivate the oxygen activity of the liquid iron. This is followed at a predetermined time thereafter by treating the liquid iron with a magnesium containing nodularizer, followed by treating the liquid iron with a eutectic graphite nucleation-inducing inoculant, and casting the iron.
Claims6
A process for the production of ductile iron comprising:
- treating liquid iron with an initialiser which is a bariumferrosilicon alloy wherein the bariumferrosilicon alloy delivers an amount of barium effective to deoxidize the iron through the formation of barium oxides,
- followed at least two minutes thereafter by treating the liquid iron with a magnesium containing nodulariser,
- followed by treating the nodularized liquid iron with a eutectic graphite nucleation-inducing inoculant, and
- casting the iron.
1 more element
Dependencies are inferred from the claim text.