Two methods presently employed for improving shelling resistance is the addition of alloying elements and the heat treating of rail. The rolling-load tests in a cradle-type machine are designed to evaluate these methods of improving the resistance to shelling. Rolling-load test results obtained from these cradle-type machines for the period between October 1, 1965, and October 1, 1966, are shown. The S-13 series were initiated to compare the effects of welding prior to flame hardening and flame hardening prior to welding. The electric-flash butt welds were made from secondhand 132-lb HF rail and flame hardened by the Hammon process. Specimens S-13A and S-13C failed after being subjected to 389,800 and 656,900 cycles, respectively. As a result of this performance, rolling-load tests were conducted on welded joints made from 132-lb HF secondhand rail having no flame hardening applied. These joints, S-13E and S-13J, shelled after being subjected to 1,088,000 and 1,163,000 cycles, respectively. Rails flame hardened by the Linde process developed shells after being subjected to 1,254,400 and 844,900 cycles in the cradle-type rolling-load machine. During this period there were no slow-bend tests.

  • Corporate Authors:

    American Railway Engineering Association

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

Media Info

  • Features: Figures; Tables;
  • Pagination: p. 477-487
  • Serial:
    • Volume: 68
    • Publisher: American Railway Engineering Association

Subject/Index Terms

Filing Info

  • Accession Number: 00040432
  • Record Type: Publication
  • Report/Paper Numbers: Bulletin 605
  • Files: TRIS
  • Created Date: Jan 22 1976 12:00AM