一种重载铁路用超细珠光体钢轨及其生产方法

By designing the alloy composition and controlling the rolling and cooling process, high-strength and high-toughness ultrafine pearlitic rails were prepared, solving the problems of complex alloying and difficult rolling in existing technologies. This method is suitable for small-radius curves in heavy-haul railways and improves the wear resistance and service life of the rails.

CN116695000BActive Publication Date: 2026-07-17ANGANG STEEL CO LTD
View PDF 4 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ANGANG STEEL CO LTD
Filing Date
2023-06-28
Publication Date
2026-07-17

Smart Images

  • Figure BDA0004309330630000051
    Figure BDA0004309330630000051
  • Figure BDA0004309330630000061
    Figure BDA0004309330630000061
  • Figure BDA0004309330630000062
    Figure BDA0004309330630000062
Patent Text Reader

Abstract

本发明涉及一种重载铁路用超细珠光体钢轨及其生产方法，钢中化学成分按重量百分比计为：C 0.84％～0.94％、Si 0.50％～0.70％、Mn 0.75％～0.90％、Cr 0.3≤Cr / C≤0.5、V 0.07％～0.10％、Nb 0.01％～0.03％、P≤0.015％、S≤0.010％，余量为Fe和不可避免的杂质。本发明主要应用于重载铁路小半径线路(半径小于300m的曲线线路)，通过合金成分设计、控制轧制和控制冷却技术，制备一种珠光体片层间距在57～75nm的超细珠光体在线热处理钢轨，钢轨踏面硬度≥435HBW，抗拉强度≥1430MPa，延伸率≥12％，本发明的钢轨在提高钢轨强度和硬度的同时保持其有良好的韧性，提高钢轨耐接触疲劳性能。
Need to check novelty before this filing date? Find Prior Art