Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Steel rail for heavy haul railway and production method and application of steel rail for heavy haul railway
The invention discloses a steel rail for a heavy haul railway and a manufacturing method of the steel rail for the heavy haul railway. A gauge corner of the steel rail for the heavy haul railway is made of a globular pearlite structure, the thickness of the gauge corner is 3-5 mm, the hardness of the gauge corner is 341-368 HB, and the elongation of the gauge corner is 13-16%. The manufacturing method includes the steps that the steel rail obtained after finishing rolling is cooled rapidly, and then the gauge corner part is rapidly heated and kept warm; the rapid cooling conditions include that the starting cooling temperature is 800-880 DEG C, the cooling speed is 1-10 DEG C/s, and the finish cooling temperature is 400-450 DEG C; and the rapid heating and heat preservation conditions include that the temperature of the gauge corner is raised to 700-800 DEG C at the temperature rise speed of 3.0-4.0 DEG C/s, and the temperature is kept for 3-5 min. The steel rail for the heavy haul railway has high strength, abrasion resistance and contact fatigue resistance, and especially has excellent abrasion resistance and contact fatigue resistance in the earlier use stage.
Steel rail for heavy haul railway and production method and application of steel rail for heavy haul railway
The invention discloses a steel rail for a heavy haul railway and a manufacturing method of the steel rail for the heavy haul railway. A gauge corner of the steel rail for the heavy haul railway is made of a globular pearlite structure, the thickness of the gauge corner is 3-5 mm, the hardness of the gauge corner is 341-368 HB, and the elongation of the gauge corner is 13-16%. The manufacturing method includes the steps that the steel rail obtained after finishing rolling is cooled rapidly, and then the gauge corner part is rapidly heated and kept warm; the rapid cooling conditions include that the starting cooling temperature is 800-880 DEG C, the cooling speed is 1-10 DEG C/s, and the finish cooling temperature is 400-450 DEG C; and the rapid heating and heat preservation conditions include that the temperature of the gauge corner is raised to 700-800 DEG C at the temperature rise speed of 3.0-4.0 DEG C/s, and the temperature is kept for 3-5 min. The steel rail for the heavy haul railway has high strength, abrasion resistance and contact fatigue resistance, and especially has excellent abrasion resistance and contact fatigue resistance in the earlier use stage.
Steel rail for heavy haul railway and production method and application of steel rail for heavy haul railway
DENG YONG (Autor:in) / GUO HUA (Autor:in) / YUAN JUN (Autor:in) / WANG CHUNJIAN (Autor:in) / JIA JIHAI (Autor:in) / ZOU MING (Autor:in) / HAN ZHENYU (Autor:in)
16.12.2015
Patent
Elektronische Ressource
Englisch
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