An Example in Steel Casting    Traction Motor Rotor Disc

 Finishing and Machining

After solidification is complete, the rotor casting is - 

  • Removed from the flask and cleaned of sand in the shake-out process 

  • Surface cleaned by shot blasting 

  • Torch cut to remove the rigging  

  • Finish trimmed by grinding

  • Heat-treated at 1650F to normalize the microstructure

  • Shot blasted to remove the heat-treatment scale

Rotor As-Cast

Rotor Machined
The  shaft is then friction welded to the rotor and the assembly is machined on the critical surfaces
  • The outer diameter and back face of the rim
  • The inner diameter bore in the hub
  • The two faces of the hub.


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Copyright 2003  by the Steel Founders' Society of America   All rights reserved. 
Address comments to: blairr@sfsa.org
Last Modified    :June, 2003 by STG

In cooperation with
 Huron Casting