Journal of Failure Analysis and Prevention

, Volume 4, Issue 5, pp 16–18 | Cite as

Premature failure of steel gantry crane wheels

  • E. E. Vernon
  • M. E. Stevenson
  • J. L. McDougall
Case Histories

Abstract

A metallurgical failure analysis was performed on a set of carbon steel gantry crane wheels following observation of excessive damage to the central tread surfaces. Rolling contact fatigue was considered as a possible failure mechanism due to the presence of what appeared to be spalling. Metallographic evaluation and hardness testing revealed that portions of the wheel tread surface had not reached the specified case hardness during heat treatment, leaving the tread surface edges in a near normalized condition. Continual contact with the rail during service allowed for plastic flow of the softer materials across the surface, resulting in the observed damage.

Keywords

flame hardening heat treatment failure rolling contact spalling wear 

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References

  1. 1.
    P.J. Blau: “Rolling Contact Wear,” Friction, Lubrication, and Wear, vol. 18, ASM Handbook, ASM International, 1992.Google Scholar
  2. 2.
    G.F. Vander Voort: Metallography: Principles and Practice, ASM International, 1999.Google Scholar
  3. 3.
    “Standard Hardness Conversion Tables for Metals,” Designation E 140–84, Annual Book of ASTM Standards, vol. 03.01, Metals—Mechanical Testing; Elevated and Low-Temperature Tests, ASTM, W. Conshohocken, PA, 1986.Google Scholar

Copyright information

© ASM International 2004

Authors and Affiliations

  • E. E. Vernon
    • 1
  • M. E. Stevenson
    • 1
  • J. L. McDougall
    • 1
  1. 1.Metals and Materials Engineers LLCSuwanee

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