Shaft design for fluxing molten metal
OwnerC. Edward Eckertinventor
Life of this patent
Estimating the term…
Abstract
A shaft for use in a method for treating molten aluminum using an impeller mounted on the shaft comprising a protective refractory sleeve resistant to attack by molten aluminum, the protective sleeve mounted on the shaft by casting to extend above and below the molten aluminum surface when the shaft is in use.
Claims3
An improved shaft for use in a method for treating a body of molten aluminum using an impeller mounted on the shaft, the impeller suitable for dispersing a material selected from fluxing gas, solid particles and an immiscible liquid in the body of molten aluminum, the method including providing a body of molten aluminum having a surface and projecting an impeller on said shaft into said body through said surface, the improvement comprising:
- (a) a carbon or graphite shaft, generally circular in cross section;
- and
- (b) a refractory sleeve resistant to attack by molten aluminum fixedly cast around said shaft and mechanically locked therewith, said sleeve positioned to extend above and below said surface when said shaft is projected into said body.
Dependencies are inferred from the claim text.