Recently Japanese rail manufacturers have been expected to develop two kinds of new rails: Wear resistant rails for foreign heavy load railways and anti-shelling rails for high speed railways, Shinkansen in Japan. As to the former ones, laboratory works and field tests have proved that high tensile rails with fine pearlitic structure are exceedingly wear resistant. Alloy or slack quenched rails meet this demand and are being manufactured in quantities. Concerning the latter, the first field test is being carried out on four new types of rails, manufactured and laid in Shinkansen for trial. On the other hand, rolling contact fatigue test has shown that steels with higher carbon content and fine pearlitic structure are also excellent in anti-shelling property. A newly developed head-hardened rail possessing fine pearlitic structure is expected to meet these demands. We are now making efforts to improve the weldability of this rail by small addition of alloying elements.

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: p. 1-8

Subject/Index Terms

Filing Info

  • Accession Number: 00303684
  • Record Type: Publication
  • Report/Paper Numbers: Session 212 Pap H.1 Conf Paper
  • Files: TRIS
  • Created Date: Feb 11 1980 12:00AM