The partially welded type of frog, in which the only loose parts are the through securing bolts and nuts has been installed on the German Federal Railway, with, considerable success. As much as 80 percent saving in maintenance is claimed, compared with the ordinary built-up type. Hardening is done by a special process which gives a maximum value of 120-130 Kg/mm 2. That part of the frog forming the distance piece and the nose at the point rail is made up from a forging which is welded to the point rails by flash welding. The life of welded frogs is twice that of the normal type, but cost of maintenance is almost negligible, furthermore gauge widening is eliminated.

  • Corporate Authors:

    Temple Press Limited

    161-166 Fleet Street
    Longon EC4,   England 
  • Publication Date: 1957-3-29

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Filing Info

  • Accession Number: 00037628
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 8 1994 12:00AM