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METALLURGICAL EFFECT OF RAIL CROPPING METHODS

Metallurgical effects of rail cropping methods are explored in an investigation of the use of an oxygen-gasoline (petrogen) cutting torch for rail cropping. To determine the detrimental effects resulting from the use of this method, three 5/8 in. rail slices, cropped with an oxygen-gasoline cutting torch, were subjected to a metallurgical microscopic examination. Observations are made concerning use of the petrogen torch for cutting rail prior to welding it into continuous strings or making closure welds, or cutting rail in track for application of joint bars. Metallurgical effects of rail cropping methods are also explored in investigation of rail cropping by the the wet abrasive cutting method using a 26 in. N.C.G. No 310 cut-off wheel. To determine the effects of using this wheel, six 1-in. slices of used 115 lb rail cut by it were subjected to metallurgical investigation. Observations are made of the martensitic structure during the oxyacetylene welding process. Recommendations include further rolling load tests and additional metallurgical work to be conducted on welded specimens and jointed sections made from rails having cementite faces and on specimens welded from rail having untempered martensitic faces.

  • Corporate Authors:

    American Railway Engineering Association

    59 East Van Buren Street
    Chicago, IL  United States  60605
  • Authors:
    • HALL, V E
  • Publication Date: 1966-2

Media Info

  • Features: Appendices; Photos; Tables;
  • Pagination: p. 483-492
  • Serial:
    • AREA BULLETIN
    • Volume: 67 N
    • Issue Number: 598
    • Publisher: American Railway Engineering Association

Subject/Index Terms

Filing Info

  • Accession Number: 00052286
  • Record Type: Publication
  • Source Agency: Association of American Railroads
  • Report/Paper Numbers: ER-175; ER-182 Proceeding
  • Files: TRIS
  • Created Date: Jul 15 1974 12:00AM