An Example in Steel Casting    Traction Motor Rotor Disc

Lessons Learned

The major challenges in producing this casting were in tailoring the alloy and rigging design to produce a sound casting with good fill in the thin rib sections and minimized shrinkage in the thick sections. 

This was achieved by --

Finished Rotor Assemblies

  • Increasing the carbon content in the alloy composition to reduce misruns in the ribs.

  • Putting the sprue/riser and gates in the center hub to get better fill in the ribs. 

  • Using exothermic sleeves on the risers, to give improved feed and eliminate shrinkage in the hub and rim.


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

In cooperation with
 Huron Casting