METHODS OF HEAT TREATMENT, INCLUDING FLAME HARDENING OF BOLTED RAIL FROGS AND SPLIT SWITCHES, TOGETHER WITH METHODS OF REPAIR BY WELDING

Methods of heat treatment are discussed, including flame hardening of bolted rail frogs and split switches, together with methods of repair by welding. Report includes welding techniques and metallurgical examination of experimental laboratory welds, and a description of service tests of simulated crossing units at Mannheim, Illinois. Recommended welding procedures for the service test units are made. Maintenance of tread corners is investigated, and measurements of rail wear and batter, and Brinell hardness are conducted during the entire service period. It is concluded that in the flame-hardened group, the Ramapo units had the lowest average number, receiving corner batter of 57 percent of the control units. The Cleveland units of the heat-treated group had the lowest average value of receiving corner batter of 37 percent of the control units. Average increases in Brinell hardness readings due to cold rolling and work hardening of the normal rail and the tread corners are tabulated.

  • Corporate Authors:

    American Railway Engineering Association

    59 East Van Buren Street
    Chicago, IL  United States  60605
  • Publication Date: 1957

Media Info

  • Features: Figures; Photos; Tables;
  • Pagination: p. 903-955
  • Serial:
    • AREA BULLETIN
    • Volume: 58
    • Publisher: American Railway Engineering Association

Subject/Index Terms

Filing Info

  • Accession Number: 00052397
  • Record Type: Publication
  • Source Agency: Association of American Railroads
  • Report/Paper Numbers: Proceeding
  • Files: TRIS
  • Created Date: Jul 15 1976 12:00AM