一种高强度耐低温抗疲劳大规格电力角钢及其制备方法

By limiting the proportions of Mn, Cr, Mo, Ti, and V and using specific heat treatment processes, high-strength, low-temperature resistant, and fatigue-resistant large-size power angle steel was prepared, solving the problem of difficulty in synergistically improving strength, low-temperature toughness, and fatigue resistance in existing technologies, and enabling stable operation of the power grid in extreme environments.

CN121737590BActive Publication Date: 2026-07-17秦皇岛佰工钢铁有限公司
View PDF 4 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
秦皇岛佰工钢铁有限公司
Filing Date
2025-12-22
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

When increasing the strength of existing large-size power angle steel, it is easy to reduce the low-temperature toughness. When improving the low-temperature toughness, it is easy to sacrifice the fatigue resistance, making it difficult to achieve a synergistic improvement of high strength, low-temperature resistance and fatigue resistance.

Method used

By limiting the ratio of Mn, Cr, Mo, Ti, and V, and combining it with specific heat treatment processes, high-strength, low-temperature resistant, and fatigue-resistant large-size electric power angle steel is prepared. This process includes vacuum degassing, continuous casting, hot rolling, cooling, and heat treatment to form a fine, high-density martensitic structure, which synergistically improves strength, low-temperature toughness, and fatigue resistance.

Benefits of technology

It achieves high strength load-bearing capacity, excellent toughness and long-life fatigue resistance of large-size power angle steel in extreme low temperature environments, ensuring the stable operation of the power grid.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure SMS_1
    Figure SMS_1
  • Figure SMS_2
    Figure SMS_2
  • Figure SMS_3
    Figure SMS_3
Patent Text Reader

Abstract

本发明涉及角钢技术领域，提出一种高强度耐低温抗疲劳大规格电力角钢，高强度耐低温抗疲劳大规格电力角钢由以下质量百分比的组份组成：C 0.12%~0.18%、Si 0.2%~0.5%、Mn 1.6%~1.61%、Cr 0.86%~0.92%、Ni 0.5%~0.8%、Mo 0.22%~0.29%、V 0.08%~0.165%、Nb 0.04%~0.06%、Ti 0.03%~0.035%、Cu 0.2%~0.3%、P≤0.015%、S≤0.005%、N≤0.008%、O≤0.003%，余量为Fe及不可避免的杂质；通过上述技术方案，解决了相关技术中电力角钢难以同时满足高强度、耐低温和抗疲劳的问题。
Need to check novelty before this filing date? Find Prior Art