Molten metal rotor with hardened tip
AssigneeMolten Metal Equipment Innovations, LLC
InventorPaul V. Cooper
Life of this patent
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Abstract
Embodiments of the invention are directed to a rotor for a molten metal pump and a molten metal pump including the rotor. The rotor has a main body and a top comprised of a material that is at least twice as hard as the main body. The top, among other things, may form a first portion of each rotor blade wherein the first portion directs molten metal into a pump chamber or other structure in which the rotor is mounted.
Claims32
A rotor for use in a molten metal pump, the rotor having structures including a graphite body, a top surface, and a plurality of vanes each having a leading face and a trailing face, and hardened portions comprising hardened material at least twice as hard as the graphite body, the hardened portions comprising the following rotor structures:
- the top surface, less than all of the leading face and less than all of the trailing face.
Dependencies are inferred from the claim text.