Composite generator rotor shaft
First Claim
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1. A method for manufacturing a rotor shaft for use in a generator, the method comprising:
- forming a rod from a metal matrix composite material, the rod having an outer diameter;
heating the rod to attain a stiffness thereof that is greater than about 300 GPa;
forming a machinable sleeve from material having a stiffness that is less than the stiffness of the rod and that is different than the material of the rod, the sleeve having an inner diameter that is equal to or less than the rod outer diameter; and
inserting the rod into the sleeve, after the rod is heated.
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Abstract
A method for manufacturing a rotor shaft is provided. A rod is formed from a metal matrix composite material, the rod having an outer diameter. The rod is heated to attain a stiffness thereof that is greater than about 300 GPa. A machinable sleeve is formed from material having a stiffness that is less than the stiffness of the rod and that is different than the material of the rod, the sleeve having an inner diameter that is equal to or less than the rod outer diameter. The rod is inserted into the sleeve, after the rod is heated.
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Citations
17 Claims
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1. A method for manufacturing a rotor shaft for use in a generator, the method comprising:
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forming a rod from a metal matrix composite material, the rod having an outer diameter;
heating the rod to attain a stiffness thereof that is greater than about 300 GPa;
forming a machinable sleeve from material having a stiffness that is less than the stiffness of the rod and that is different than the material of the rod, the sleeve having an inner diameter that is equal to or less than the rod outer diameter; and
inserting the rod into the sleeve, after the rod is heated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for manufacturing a rotor for use in a generator, the method comprising:
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forming a rod from a metal matrix composite material, the rod having a stiffness greater than about 300 GPa; and
depositing a material over the rod to form a sleeve having a stiffness that is less than the stiffness of the rod and that is different than the material of the rod. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method for manufacturing a rotor for use in a generator, the method comprising:
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forming a rod from a metal matrix composite material comprising a steel alloy having discontinuous random silicon carbide fibers dispersed therethrough, the rod having an outer diameter;
heating the rod to attain a stiffness thereof that is greater than about 200 GPa;
forming a machinable sleeve from material having a stiffness that is less than the stiffness of the rod and that is different than the material of the rod, the sleeve having an inner diameter that is equal to or less than the rod outer diameter;
heating the sleeve;
cooling the rod; and
inserting the rod into the sleeve, after the sleeve is heated to attain the stiffness.
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Specification