FLAME HARDENING OF RAIL BY THE HAMMON CONTINUOUS PROCESS AND PHYSICAL AND ROLLING LOAD TEST RESULTS

Since the standard carbon rail is removed from track due to abrasion, head flow on the low rail of the curves and shelling on the high rail, it is of interest to the industry to investigate any process that alleviates this problem. Failures due to shelling alone amount to 40 percent of all types of failures. Alloy rail steel chemistries and heat treatment have been found helpful in extending rail life where the above conditions existed. In the area of heat treatment, various types of flame hardening of the rail head have been found applicable economically and available in all parts of the United States. Summarizing, features of this process that may be of interest to railroads are: 1. Evaluation of rail flame hardened by this process at the Research Center and the University of Illinois indicates that it should give good service performance. 2. It is claimed that it will be economical because of its ability to use propane or natural gas for heating the rail. 3. Rail of any length can be continuously flame hardened, before or after welding. 4. The equipment can be mounted on railroad cars to be used either at the welding or cropping site.

Media Info

  • Features: Figures; Tables;
  • Pagination: 3 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00095682
  • Record Type: Publication
  • Source Agency: Association of American Railroads
  • Report/Paper Numbers: No. ER-44
  • Files: TRIS
  • Created Date: Jul 15 1976 12:00AM