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A platform for research: civil engineering, architecture and urbanism
Steel rail for high-speed railway and production method and application of steel rail
The invention discloses a steel rail for a high-speed railway and a preparation method of the steel rail. Gauge corners of the steel rail for the high-speed railway are composed of globular perlitic structures. The thickness of each gauge corner is 3-5 mm, the hardness of each gauge corner is 290-319 HB, and the ductility of each gauge corner is 13.5-17.0%. The preparation method comprises the steps that the steel rail after finished rolling is quickly cooled, and then the gauge corner portions are quickly heated and kept warm; the quick cooling conditions are that the initial cooling temperature is 800-880 DEG C, the cooling speed is 2-10 DEG C per second, and the final cooling temperature is 360-410 DEG C; the quick heating and warm keeping conditions are that the temperature of the gauge corners is increased to 710-810 DEG C at a temperature increasing speed of 3.0-4.0 DEG C per second, and the temperature is kept for 2-4 min. The steel rail for the high-speed railway has high strength, high abrasion resistance and high contacting fatigue resistance, and has superior abrasion resistance and contacting fatigue resistance especially during the early use stage.
Steel rail for high-speed railway and production method and application of steel rail
The invention discloses a steel rail for a high-speed railway and a preparation method of the steel rail. Gauge corners of the steel rail for the high-speed railway are composed of globular perlitic structures. The thickness of each gauge corner is 3-5 mm, the hardness of each gauge corner is 290-319 HB, and the ductility of each gauge corner is 13.5-17.0%. The preparation method comprises the steps that the steel rail after finished rolling is quickly cooled, and then the gauge corner portions are quickly heated and kept warm; the quick cooling conditions are that the initial cooling temperature is 800-880 DEG C, the cooling speed is 2-10 DEG C per second, and the final cooling temperature is 360-410 DEG C; the quick heating and warm keeping conditions are that the temperature of the gauge corners is increased to 710-810 DEG C at a temperature increasing speed of 3.0-4.0 DEG C per second, and the temperature is kept for 2-4 min. The steel rail for the high-speed railway has high strength, high abrasion resistance and high contacting fatigue resistance, and has superior abrasion resistance and contacting fatigue resistance especially during the early use stage.
Steel rail for high-speed railway and production method and application of steel rail
2015-11-18
Patent
Electronic Resource
English
| European Patent Office | 2015
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