An apparatus for the heat-treatment of rails was installed recently in the signal shops of the North Western Railway, India. The process, which is stated to be both simple and efficient, so far has been confined to the wing rails on points and crossings. The rails to be treated are clamped on a table and travel under an oxy-acetylene flame and subsequently a water-jet, attached to the tool-holder of the planning machine. The rail immediately under the torch is heated to approximately 850 degrees, and the same point on the head is quenched about 46 sec. after passing from under the flame. The depth of hardening is about 3/16 in; the surface is sufficiently hard yet not hard enough to produce flaking the gradation from surface to center is regular and gradual, and the structure throughout is reported to be excellent.

  • Corporate Authors:

    Temple Press Limited

    161-166 Fleet Street
    Longon EC4,   England 
  • Publication Date: 1944-10-27

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00037980
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 8 1994 12:00AM