Temperature Rise Due to Frictional Sliding of SUS316L Vs SUS316L and SUS316L Vs Polyimide at 4 K

  • Akira Iwabuchi
  • Tomomi Honda

Abstract

Frictional heat is one of the sources for the quench of a magnet. However, it is uncertain how much temperature rises due to sliding in a magnet. In this work, frictional properties were obtained under a fretting condition using SUS316L steel and polyimide at 4.2 K in liquid helium. The temperature rise was measured using a thermocouple inserted into a steel specimen during suiding. The maximum temperature rise was 9.3 K during fretting for the metal-metal contact. The temperature peak appeared twice during one fretting cycle corresponding to the slip in a cycle, and the time lag was 30 to 50 ms after the sliding velocity reached maximum. Temperature rise was linearly proportional to the product of a maximum sliding velocity and frictional force, related to the frictional rate. The temperature rise resulted from the balance between the heat generation during the slip and the cooling during the stick in one cycle.

Keywords

Temperature Rise Maximum Velocity Austenitic Stainless Steel Frictional Force Liquid Helium 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    Edwards, V.W. and Wilson, M.N., The effect of adhesion between turns on the training of superconducting magnet. Cryogenics, 1978, 18, 423–425.CrossRefGoogle Scholar
  2. 2.
    Iwasa Y., Experimental and theoretical investigation of mechanical disturbances in epoxy-impregnated superconducting coils. 1. General introduction. Cryogenics, 1985, 25, 304–306.CrossRefGoogle Scholar
  3. 3.
    Kensley, R.S. and Iwasa, Y., Transient slip behaviour of metal/insulator pairs at 4.2 K. Cryogenics, 1981, 21,479–489.CrossRefGoogle Scholar
  4. 4.
    Tsukamoto O., Takao T. and Honjoh S., Estimating the size of disturbances due to conductor motion in superconducting windings. IEEE Trans, on Magnetics, 1988, 24, 1182–85.CrossRefGoogle Scholar
  5. 5.
    Iwabuchi, A., Honda, T., and Tani, J., Tribological properties at temperatures of 293, 77 and 4 K in fretting. Cryogenics, 1989, 29, 124–131.Google Scholar
  6. 6.
    Spure, R.T., Temperatures reached by sliding thermocouples. Wear. 1980, 61, 175–182.CrossRefGoogle Scholar

Copyright information

© The Institute of Electrical Engineers of Japan 1990

Authors and Affiliations

  • Akira Iwabuchi
    • 1
  • Tomomi Honda
    • 1
  1. 1.Department of Mechanical EngineeringIwate UniversityMorioka 020Japan

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