Powder Metallurgy of High Density Helical Gears

Powder Metallurgy is a proven technology to produce high strength gears for the automotive industry. Advances in powder production, compaction, and sintering combined with double pressing have enabled overall part densities up to 7.5 g/cm3 in spur gears. However, helical gears are more difficult to produce to these same densities because the geometry does not lend itself to the DP/DS process. Described in this paper is a P/M parts making technology capable of producing single pressed and sintered helical gears with densities greater than 7.4 g/cm3. Description of a prototype run will be presented with the resulting sintered part densities and part-to-part variability. To further enhance the gear performance and gear tolerance of these helical gears, the gears were subsequently surface densified via rolling. Improvements in the surface density and gear quality will be described.

• Record URL:
  • https://doi.org/10.4271/2003-01-0336
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
• Supplemental Notes:
  • Abstract reprinted with permission of SAE International.
• Authors:
  • Slattery, Richard
  • Hanejko, Francis
  • Marucci, Michael
  • Müller, Jürgen
• Conference:
  • SAE 2003 World Congress & Exhibition
  • Location: Detroit Michigan, United States
  • Date: 2003-3-3 to 2003-3-6
• Publication Date: 2001-10-28

Language

• English

Media Info

• Media Type: Web
• Serial:
  • SAE Technical Paper
  • Publisher: Society of Automotive Engineers (SAE)
  • ISSN: 0148-7191
  • EISSN: 2688-3627
  • Serial URL: http://papers.sae.org/

Subject/Index Terms

• TRT Terms: Gears; Parts; Powder metallurgy; Production
• Subject Areas: Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 01802247
• Record Type: Publication
• Source Agency: SAE International
• Report/Paper Numbers: 2003-01-0336
• Files: TRIS, SAE
• Created Date: Dec 9 2021 10:24AM