The RSP-M company started welding rails for the Moscow -Saint Petersburg high-speed railway
The company will weld hundred-meter rails into eight-hundred-meter lashes.
Screenshot of the current video: TASS.
Today we have the official start of welding, said Alexander Izmailov, CEO of RSP-M. We are talking about rails specially designed for the HSR manufactured by Evraz.
The unique DT350VC400 rails were manufactured by Evraz by order of Russian Railways. After leaving the rolling mill, their length is 100 m. To ensure maximum passenger comfort, it is necessary to reduce the number of joints and ensure a smooth track surface for train wheels. For this purpose, for laying on a high-speed highway, the rails are welded end-to-end into a single whip 800 m long.
As explained by the Deputy Chief Engineer of the Central Directorate for Track Repair (branch of Russian Railways) Sergey Kirilenkov, 800 meters is the optimal length that the existing infrastructure can accommodate. According to the expert, the specified length actually corresponds to the length of the train delivering the lashes to the place of laying.
"The rails that will be used for high-speed traffic have high geometry requirements. The deviation from straightness for these rails is 0.2 millimeters."At the moment, the technology of creating tracks involves laying rails, sleepers and crushed stone in a rail-sleeper grid. Whereas when designing a high-speed highway, a ballast-free base was used, which assumes the laying of slabs instead of crushed stone, on which rails will be subsequently installed.