There has been a considerable increase in the heat treatment of rails for U.S.A. railways. Apart from controlled cooling, which is applied universally as a protection against the development of transverse fissures, rail-end hardening is extensively practiced, to reduce batter of the rails at the joint. In one specific case mentioned the addition to the basic price for rails control-cooled, end-hardened, chamfered at the extreme ends on the running surface, and drilled for fishbolts, was about 59 percent. It was considered advantageous to use heat-treated rails in switch and crossing work. For trackwork subject to exceptionally heavy wear an alloy steel, such as chrome-vanadium is preferable, though this is more costly than heat-treated rail. The disadvantage of such alloys is that it is impractical to weld them by the oxyacetylene method, so that on site repairs by welding are ruled out.

  • Corporate Authors:

    Temple Press Limited

    161-166 Fleet Street
    Longon EC4,   England 
  • Publication Date: 1958-11-14

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Filing Info

  • Accession Number: 00037660
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 8 1994 12:00AM