Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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Experimental Investigation of Thermal Stress Cracks in Mechanical Face Seals

기계평면시일의 열응력 크랙에 관한 실험적 연구

  • 김청균 (홍익대학교 트라이볼로지 연구센터)
  • Published : 1996.09.01
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Abstract

One of the greatest dangers in mechanical face seals is the formation of heat checking and thermal stress cracks on the sliding surfaces. These thermal distortions due to non-uniform heating lead to increase the leakage of the sealed fluids and wear, and with balance of the seal can cause the seal faces to part. In this study heat checking and thermal stress cracks are investigated experimentally. These thermal distortions are explained using the thermal models of the conatct geometries between the seal ring and the seal seat. To overcome these thermal problems, the thermohydrodynamic seal is presented. The newly developed mechanical seal may substantially reduce the friction torque, frictional heating which causes heat checking and thermal stress cracks, and wear.

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References

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