Experimental Sliding Performance of Composite Tip Seal with High-Carbon Steel Plate under Lubricated Conditions Applied to Scroll Expander Systems

Abstract

This study is focused on the radial leakage points between the bottom steel plate and the composite tip seal of a scroll expander device. The critical components of the scroll expander were thoroughly studied with the use of a TE 57 sliding microfriction machine under different lubrication regimes and examined from the perspective of both friction and wear. Various friction graphs were produced using different load, speed, and temperature combinations adjusted to simulate the expander's operating conditions. The wear analysis showed that a higher contact load can enhance the performance of the scroll expander, lowering the wear rates and simultaneously reducing the leakage paths. Surface analysis revealed the wear damage mechanisms of the scroll steel plate and highlighted the tribological performance of the tip seal.

KEY WORDS:

• Scroll Expander
• Elastomer Composite
• Sliding Wear
• PV Factor
• Friction Coefficient
• Lubrication
• Steel

Acknowledgments

Review led by Richard Salant