Cast titanium compressor wheel

CAFC
  • US 6,629,556 B2
  • Filed: 05/07/2002
  • Issued: 10/07/2003
  • Est. Priority Date: 06/06/2001
  • Status: Expired due to Term
First Claim
Patent Images

1. A method for manufacturing a titanium centrifugal compressor wheel, said method comprising:

  • introducing a sacrificial material into a die comprised of a plurality of rigid die inserts (20) to form a compressor wheel pattern comprising a hub (1) defining an axis of rotation and backswept aerodynamic blades (4, 5) carried on said hub, extracting said die inserts (20) radially or along a curve to expose said compressor wheel pattern, forming a mold by a lost wax process around said compressor wheel pattern (21), forming said titanium compressor wheel by investment casting in said mold.

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