MOLTEN METAL ROTOR WITH HARDENED TIP
First Claim
1. 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.
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Accused Products
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.
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Citations
32 Claims
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1. 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.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
Specification