Method for melt puddle control and quench rate improvement in melt-spinning of metallic ribbons
AssigneeGeneral Electric Company
InventorHoward H. Liebermann
Life of this patent
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Abstract
A bearing gas flow minimizes dynamic fluctuations in the molten alloy puddle from which metallic ribbon is formed during chill block melt-spinning. The bearing gas flow causes an improved quench rate and melt puddle stabilization which results in reduced upper ribbon surface texture and improved edge definition.
Claims9
An improved method for chill-block melt-spinning metallic ribbon comprising preparation of a molten alloy in a reservoir in a crucible, ejecting a melt stream of said molten alloy through an orifice in said crucible onto a moving substrate surface to form a molten alloy puddle thereon, and rapidly quenching said ejected alloy to form a continuous metallic ribbon from said molten alloy puddle, the improvement comprising
- supplying a confluent gas at a predetermined flow rate, said confluent gas being coaxial with and encompassing said ejected melt stream and bearing down on and surrounding, said molten alloy puddle as said ribbon is formed therefrom.
Dependencies are inferred from the claim text.