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Research and Development of New Type Rare Earth Rail for Heavy Haul Railway of Baotou Steel
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Jia-wei Wang1, Gui-ying Zhao1, Ya Tao1, Zheng-wei Liang1, Yong-ming Wang2
Science & Technology of Baotou Steel | 2022, 48(4) : 46 - 50
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Science & Technology of Baotou Steel | 2022, 48(4): 46-50
• Quality of Variety and Experiment and Research •
Research and Development of New Type Rare Earth Rail for Heavy Haul Railway of Baotou Steel
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Jia-wei Wang1, Gui-ying Zhao1, Ya Tao1, Zheng-wei Liang1, Yong-ming Wang2
Affiliations
  • 1 Technical Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
  • 2 Chief Engineer Office of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
Published: 2022-08-25
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With the axle load and transport volume of train increase year by year, it’s necessary to use new type high strength rail to satisfy the operating requirements, prolong the service life of rail and reduce the maintenance of railway. The third generation of rare earth heat-treated rail is successfully developed by Baotou Steel through researching the composition optimization and heat treatment process of rare earth rail. Its tensile strength Rm≥1 300 MPa, percentage elongation after fracture A≥10%, tread hardness HB is 380~430. The experimental study showed that the rare earth was easy to attach to the inclusions in high carbon steel rail so that such inclusions as MnS and Al2O3 were modified; simultaneously, the lamellar spacing of pearlite was reduced and austenite grain size was refined by rare earth so as to improve the toughness of high carbon heavy rail steel. The wear resistance and contact fatigue resistance of rail could be significantly improved with new type heat-treated rare earth rail, which is suitable for heavy haul railway and section with small curve.

rare earth rail  /  smelting  /  rolling
Jia-wei Wang, Gui-ying Zhao, Ya Tao, Zheng-wei Liang, Yong-ming Wang. Research and Development of New Type Rare Earth Rail for Heavy Haul Railway of Baotou Steel[J]. Science & Technology of Baotou Steel, 2022 , 48 (4) : 46 -50 .
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Year 2022 volume 48 Issue 4
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  • Receive Date：2022-04-08
  • Online Date：2025-10-20
  • Published：2022-08-25
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  • Received：2022-04-08
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    1 Technical Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
    2 Chief Engineer Office of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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