INVESTIGATION OF SERVICE AND DETECTED BUTT-WELDED RAIL JOINT FAILURES

In the period between October 1, 1965, and October 1, 1966, sixteen failures, service and detected, in butt-welded rail joints were submitted to the Association of American Railroads Research Center for a metallurgical examination. To date, the investigation has been completed on 9 of these 16 failures, in two oxyacetylene pressure butt weld: It is believed that a result of improper welding practice. Failure in an electric-flash butt weld was attributed to the presence of an electrode burn introduced during the welding process. In other electric-flash butt welds it was disclosed that the rail ends were cropped with a petrogen torch and that the time between cutting and welding ranged from a few days to several weeks. This time lapse is of concern because of the incipient cracks that may form and further develop on subsequent heating operations. A second possible cause for these failures is that the amount of rail cropped from the ends of these secondhand rails was insufficient to remove existing bolt-hole cracks that extend back into the web. In still other electric-flash butt welds, heavy segregation patterns were found.

  • Corporate Authors:

    American Railway Engineering Association

    59 East Van Buren Street
    Chicago, IL  USA  60605
  • Publication Date: 1967-2

Media Info

  • Features: Figures; Tables;
  • Pagination: p. 372-383
  • Serial:
    • AREA BULLETIN
    • Volume: 68
    • Publisher: American Railway Engineering Association

Subject/Index Terms

Filing Info

  • Accession Number: 00040425
  • Record Type: Publication
  • Report/Paper Numbers: Bulletin 605
  • Files: TRIS
  • Created Date: Jan 22 1976 12:00AM