Page 217 - The Tribology Handbook

Wheels, rails and tvres 61 1

RAILWAY RAIL
RAILWAY WHEEL PNEUMATIC TYRE WHEEL

CRANE RAIL
CRANE WHEEL SOLID TYRE WHEEL
Rgum 11.1 Cross sections of typical wheels and rails

Table 11.1 The effect of various factors on wear

Strrl rails Srr Figurr 11.2. Littlr iivrrall liirreiised Inrreasrd weiir Kail tiriir Inrreiisrd \Vriir is htnuisplirrir
(vrrtiral wiir) \Vrar u llg rlTerr rxrrpt rnrrnsivr wear due to ridured hy hardnrss iiiid inrrriisrd II! ii pillurinii
where on sidr or it1 r~irrnsioir. iiirrriising riirr~isiiiii rouKh or iiirrrases wriir
p = A 111 I IlanKr uriir. irmprratures Hrnrr thr \vherl sin. rrsistiinrr distcmrd sul~si~intiiill~
I iirrrasrd ahow 200°C. slnpr of tlir rrdurr \vwr iiiiiiing
ticar at hixh drprnding on linrs in Figiirr substiinti:illy surliirr. or 11)
spreds thc 11.2 Strrl should siiiidiii~! t11r
rountrr~ict~~l ;itmcrrphrre have ii liiir. trd
h! inrrr;isrd pwrliiir
\war dur to niirrc)strurttirc
niorr
;irrcltntioii.
Kr;idient
climbing, and
hraliing at loti
spmls
Strrl tyrrs Similar to rail As Iir rails Littlr eflrrt \Vriir (I Inrrrasc~I (:iirrugatrd rail
tirar (diamrtrrlp hardnrss and surLcrs ciiusr
See Figurr I 1.2 tiherr lnugl~iirss ticar and
p = 2 10 3 rrdurr tiriir iioisr. Curvrs
iii 111c track
iiirrriisc u'riir
~ ~~
Pnrumetir Srr Figurr 11.5 Srr Figurr I 1.S Xlaximum Wear rrdurrd to \Vriir u Kadial ply Hiirshncss iiiiirr Fcs rlTrrt o1'
ruhhrr tyrrs \Vrar dur trm~ieraturr 20-.50Y0 of dry (diamrtrrf rnnstrur~i~in inipnrtiint inlliiti~~n
mainly to rhr Tor continuous wcar tiliere 0 U 2 rrdures tiear tliiia prrssiirr. srr
rlTrct of use 12OY: by alxiut 40%. niughiirs~ in Figurr 11.5
hraking and 'IIw tiriir rcriid surlirrs.
rornrring. Onr resistanrr nl' hy a Ixttlr ol
right-iinglrd ditTrrrni iiliout 3. Srr
turn ruhhrr vxrirs Figurr 11.3
equiralrnt to 3 widrly
stlips
Solid ryrrs Pn,pnrtional to Use limitrd tu Inipnrtant Reduced wrar \)'vu drrrasrs hliitrriiils should R~rugh. sliilrli
117 Inti sprrds due limiting factor: with Ix rhcnrn 10 surhrrs rauw
tiherr y > 1 IO pcxir hear drprndrnt on increasing size suit thr rapid \wiir
dissipaiion tyrr matrrinl r~iaditinns

811.1