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
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Type of rails heat-treated
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R65, 3 - 13.6 m long
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Rail motion speed, m/min
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regulated from 0.2 to 0.72
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Reheat temperature,°C
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regulated up to 1000
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Cooling rate, °С
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regulated from 2 to 14
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Cooling medium
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air with regulated humidity
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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.
