Abstract
The main causes of destruction of continuous welded rail tracks, the main types of their destruction and the causes of their occurrence are considered. The technologies for the manufacture of rails are analyzed, including heat treatment along the entire length of the rail, treatment of the ends of the rail, surface hardening and anti-flake treatment. To increase the durability of rail tracks, a number of measures have been proposed.
Highlights
An increase in the total volume of freight traffic by rail calls for upgrades of the operational characteristics of railways and for reduction of the cost of its manufacture
Railway transport belongs to the category of hazardous, so various rail defects and damages arising during its operation are classified by JSC «VNIIZhT» (Jont Stock Company «Ralway Reasearch Institute») into nine groups in correspondence with main elements of the rail (Fig. 2) [3, 4]
Damaged rails, according to the degree of danger of defects, are subdivided into acutely defective destroyed (ADD), which can lead to sudden destruction and defective and (DD) acutely
Summary
An increase in the total volume of freight traffic by rail calls for upgrades of the operational characteristics of railways and for reduction of the cost of its manufacture. The most common types of rail head wear are delamination and chipping of metal along the rolling surface, longitudinal and transverse cracks leading to fracture, wrinkling and uneven wear of the head itself.
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