Top-of-Rail Friction Measurements of the Swedish Iron Ore Line

Projekt:

JVTC

Sammanfattning:
Friction management in the railway industry is a well-established
technology with the aim of optimizing the friction between wheel
and rail. Determining the friction coefficient (Q) at the wheel-rail
interface is therefore important especially for heavy haul lines
with higher axel loads. This paper presents an initial study of the
top-of-rail friction condition of a 30 ton axel load, Iron Ore line in
the northern part of Sweden. The friction coefficient between the
rail and a metal wheel of a portable Tribometer was measured at
different geographical locations and during different
environmental conditions. The effects of precipitation are studied
and compared with the effects of top of rail friction modifiers. The
measurements of not lubricated line sections showed values
around Q 0.6 compared to Q 0.3 for areas with e.g. top-of- rail
lubrication. During snowy conditions a decrease in friction could
also be detected.

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Författare: Yonas Lemma ; Matthias Asplund ; Matti Rantatalo ; Jan Lundberg
Utgivare: Luleå tekniska universitet
Utgivningsdatum: 2014
Diarienummer: TRV 2011/58769
ISBN: 978-91-7439-972-1
Antal sidor: 5
Språk: Engelska
Kontaktperson: Per Olof Larsson Kråik, UHjbs