Method for producing a rotor of an electric asynchronous machine
AssigneeSiemens Aktiengesellschaft
InventorsANDREAS BETHGE, KAI-UWE VOLKER
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Abstract
In a method for producing a rotor of an asynchronous electric machine, a carrier shaft is produced with shaft slots and a squirrel cage rotor is applied to the carrier shaft. The carrier shaft and an electrically conductive bulk material of nickeled copper is placed into a container so that the bulk material fills up the shaft slots. The bulk material is compacted in the container by hot isostatic pressing and thereby bonded to the carrier shaft such that nickel as diffusion material causes permanently bonding of copper to the carrier shaft. The container is then detached from the carrier shaft.
Claims10
1-10. (canceled)
A method for producing a rotor of an asynchronous electric machine, comprising:
- producing a carrier shaft with shaft slots;
- applying a squirrel cage rotor to the carrier shaft;
- placing the carrier shaft and an electrically conductive bulk material of nickeled copper into a container so that the bulk material fills up the shaft slots;
- compacting the bulk material in the container by hot isostatic pressing and thereby bonding the bulk material to the carrier shaft such that nickel as diffusion material causes permanently bonding of copper to the carrier shaft;
- and
- detaching the container from the carrier shaft after hot isostatic pressing.
The method of claim 10, wherein the carrier shaft is made of steel.
The method of claim 10, wherein the container is essentially a closed metal tube.
The method of claim 10, wherein the container has a shape and size corresponding to a shape and size of the carrier shaft so that an outer side of the carrier shaft interspersed with the shaft slots is in contact with an inner side of the container after the carrier shaft has been placed into the container.
The method of claim 10, wherein the carrier shaft and the container are essentially cylindrical in shape.
The method of claim 10, wherein the container is detached from the carrier shaft by a twist-off motion.
The method of claim 10, wherein the carrier shaft and the container are designed such that a space filled by the bulk material in the container has a cohesive structure.
The method of claim 10, further comprising heating the container in a process-gas-filled autoclave during hot isostatic pressing.
The method of claim 10, wherein argon is used as process gas.
Dependencies are inferred from the claim text.