金属热处理 ›› 2025, Vol. 50 ›› Issue (8): 76-79.DOI: 10.13251/j.issn.0254-6051.2025.08.013

• 材料研究 • 上一篇    下一篇

直线滚动导轨用55MnCr钢的感应淬火组织与硬度

那艳会1, 王存宇2, 冯桂萍3, 周吉贞4   

  1. 1.通用技术集团大连机床集团有限责任公司 技术中心, 辽宁 大连 116100;
    2.钢铁研究总院有限公司 特殊钢研究院, 北京 100081;
    3.抚顺特殊钢股份有限公司 技术中心, 辽宁 抚顺 610073;
    4.通用技术集团大连机床集团有限责任公司 功能部件分公司, 辽宁 大连 116100
  • 收稿日期:2025-03-01 修回日期:2025-06-20 出版日期:2025-08-25 发布日期:2025-09-10
  • 通讯作者: 王存宇,正高级工程师,博士,E-mail:wang_cunyu@126.com
  • 作者简介:那艳会(1983—),女,高级工程师,主要研究方向为热处理工艺,E-mail:506846912@qq.com。
  • 基金资助:
    工信部重点项目(2023ZY02015);中国钢研重点项目(集23T61320)

Microstructure and hardness of induction hardened 55MnCr steel for linear rolling guideway

Na Yanhui1, Wang Cunyu2, Feng Guiping3, Zhou Jizhen4   

  1. 1. Technical Center, General Technology Group Dalian Machine Tool Co., Ltd., Dalian Liaoning 116100, China;
    2. Research Institute of Special Steels, Iron and Steel Research Institute Co., Ltd., Beijing 100081, China;
    3. Technical Center, Fushun Special Steel Co., Ltd., Fushun Liaoning 610073, China;
    4. Functional Component Branch, General Technology Group Dalian Machine Tool Co., Ltd., Dalian Liaoning 116100, China
  • Received:2025-03-01 Revised:2025-06-20 Online:2025-08-25 Published:2025-09-10

摘要: 使用55MnCr钢棒生产了某规格直线导轨,研究了感应淬火前后的微观组织和硬度。冶金质量评价结果表明工业生产55MnCr钢具有较高洁净度和均匀度水平。导轨型材经表面感应淬火后,滚道位置淬硬层深度达2.5 mm以上,获得板条马氏体+细针状马氏体组织,满足设计要求。

关键词: 直线导轨, 55MnCr钢, 感应淬火, 组织, 硬度

Abstract: One type of linear guideway was produced by using 55MnCr steel, and the microstructure and hardness before and after induction hardening were studied. The metallurgical quality evaluation results show that the industrial produced 55MnCr steel has a higher level of cleanliness and uniformity. After surface induction hardening, the depth of hardened layer at raceway position is more than 2.5 mm, the microstructure of lath martensite combined with acicular martensite is obtained, which meets the design requirement.

Key words: linear guideway, 55MnCr steel, induction hardening, microstructure, hardness

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