Rail Differential Heat Treatment by Means of Air According to TEC Technology

Rail Differential Heat Treatment Unit from Separate TEC-DT-13.6 Induction Heating

At the present time SME TEC provides optimization of rail heat treatment technology for up to 13.6 m long rails coming from separate induction heating.

Main Technical Parameters

 Type of rails heat-treated

R65, 3 - 13.6 m long

 Rail motion speed, m/min

regulated from 0.2 to 0.72

 Reheat temperature,°C

regulated up to 1000

 Cooling rate, °С

regulated from 2 to 14

 Cooling medium

air with regulated humidity

The technology and modes for differential heat treatment of carbon and microalloy steel rails were optimized. This technology ensures rail quality according to GOST R 51685 draft requirements, provided the following:

  • Fine-grained perlitic structure with colony dispersion within the range of 20 µm
  • High level of physical and mechanical properties including impact strength of up to 0.4 MJ/m2 
  • Residual compression stress in all rail components.

The design and operating modes of industrial modules for heat treatment units for rails from rolling and separate induction heating were optimized.

DTO-TEC-13.6 Unit, constructed by SME TEC, allows to perform trial runs for optimization of rail heat treatment technology and modes to Customer's requirements including the following:

  • Extending the range of components used for steel chemical composition in order to improve rail quality and optimize the operating costs
  • Preparing test lots of rail samples for testing.