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The evolution of polymer bearing processing for scroll compressor performance and life enhancement.

Number: pap.1190

Author(s) : KIM M., MARSELLA D., SIDOT B.

Summary

Polymer bearings with a PTFE-based running surface were first introduced as a breakthrough in scroll compressor performance approximately 30 years ago. These bearings consisted of the polymer surface, porous bronze interlayer and steel supporting layer. That construction has become widespread in compressor applications, as the bearing composition and performance have advanced, with improved environmental impact. Since that introduction, polymer application to the bronze bearing interlayer has typically relied on the deposition of a composite slurry to produce the low-friction, wear resistant surface. While that deposition method has served the compressor application well, bearing life was basically limited by the polymer integrity and layer thickness due to the inherent nature of the slurry-based process. A new material technology is now available for use in scroll compressor bearing manufacture to provide notably improved performance both in durability and seizure resistance in comparison to the historical slurry-based deposition method. These performance improvements have been documented through wide-ranging tribological testing in general tribological testing conditions as well as methods relevant to scroll compressor conditions. A comparison of the bearing materials manufactured by multiple process technologies is provided as well as tribological results documenting the performance enhancement. Test data presented include results from the bearing development and manufacture and also qualification tests by a prominent compressor manufacturer, documenting improvements in both durability and seizure resistance.

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Pages: 9 p.

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Details

  • Original title: The evolution of polymer bearing processing for scroll compressor performance and life enhancement.
  • Record ID : 30019448
  • Languages: English
  • Source: 2016 Purdue Conferences. 23rd International Compressor Engineering Conference at Purdue.
  • Publication date: 2016/07/11

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