SEM, 2018, #1, 3-8 pages
Modern rail steels and solutions ESR (Review).
Information 1. Operating conditions and defects observed
International Association «Welding»
#1, 2018 (March)
L.B. Medovar, G.P. Stovpchenko, G.O. Polishko, E.A. Pedchenko, V.A. Zaitsev
E.O. Paton Electric Welding Institute of the NAS of Ukraine
11 Kazimir Malevich Str., 03150, Kyiv, Ukraine. E-mail: email@example.com
Review is made about the tendencies of development of railway transport and changes, due to them, in service conditions and occurrence of defects, which decrease the rail service life. Growth in movement speed of passenger trains and increase in load to axle requires the improvement of rail quality and properties of steels from which they are manufactured. The increase in intensity of alternating contact loads, heating in long-time braking and corrosion factors cause the rails damage. Most of rail defects, leading to coming out of order, have the contact-fatigue origin and their formation is often connected with a metallurgical quality of steel, the improvement of which requires the technological updating of all the rail production cycle. Ref. 25, Fig. 1.
railway rails; movement speed; load to axle; service conditions; fatigue defects
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