高碳铬轴承钢的在线球化退火工艺

doi:10.13251/j.issn.0254-6051.2023.10.019

金属热处理 ›› 2023, Vol. 48 ›› Issue (10): 134-137.DOI: 10.13251/j.issn.0254-6051.2023.10.019

高碳铬轴承钢的在线球化退火工艺

刘晓明¹, 张博², 吴冰冰¹, 孙刚飞², 邢云翔³, 许荣昌⁴, 李辉¹

1.山东理工大学材料科学与工程学院, 山东淄博 255000;
2.山东柱威轴承科技有限公司, 山东聊城 252000;
3.山东智连共同体轴承科技有限公司, 山东聊城 252000;
4.山东钢铁股份有限公司山钢研究院, 山东济南 271100

收稿日期:2023-05-24 修回日期:2023-08-17 出版日期:2023-10-25 发布日期:2023-12-07
通讯作者: 李辉,副教授,博士,E-mail:lhlwj8888@163.com
作者简介:刘晓明(1997—),男,硕士研究生,主要研究方向为轴承钢的产品开发,E-mail:XM1997L@163.com。
基金资助:
山东省轴承智能制造创新创业共同体资助项目

On-line spheroidizing annealing process of high carbon chromium bearing steel

Liu Xiaoming¹, Zhang Bo², Wu Bingbing¹, Sun Gangfei², Xing Yunxiang³, Xu Rongchang⁴, Li Hui¹

1. School of Materials Science and Engineering, Shandong University of Technology, Zibo Shandong 255000, China;
2. Shandong Zhuwei Bearing Technology Co., Ltd., Liaocheng Shandong 252000, China;
3. Shandong Zhilian Community Bearing Technology Co., Ltd., Liaocheng Shandong 252000, China;
4. Research Institute, Shandong Iron and Steel Co., Ltd., Jinan Shandong 271100, China

Received:2023-05-24 Revised:2023-08-17 Online:2023-10-25 Published:2023-12-07

摘要/Abstract

摘要： 对GCr15高碳铬轴承钢进行了不同工艺的热变形在线球化退火,采用SEM对在线球化退火后GCr15钢中碳化物的数量、尺寸、形貌进行了分析,并利用显微维氏硬度计进行了硬度测定,得出本试验在线球化退火工艺的最佳终变形温度T和冷却速率v。结果表明,当T=720 ℃、v=0.05 ℃/s时,碳化物的平均尺寸大、数量多、圆度好,且均匀分布在铁素体上,为最优工艺参数,而T=650 ℃、v=0.2 ℃/s时的球化效果最差。随着T的升高,球化比例不断提高;T相同时,v越低,球化时间越长,所得到的球状碳化物颗粒尺寸越大,球化效果越好。

关键词: 高碳铬轴承钢GCr15, 在线球化退火, 碳化物, 冷却速率

Abstract: Quantity, size and morphology of carbides in high carbon chromium bearing steel GCr15 after different hot deformation on-line spheroidizing annealing processes were studied by using SEM, and the hardness was measured by using a micro Vickers hardness tester, and then the optimal process parameters of the on-line spheroidizing annealing process were obtained. The results show that when the final deformation temperature T is 720 ℃ and the cooling rate v is 0.05 ℃/s, the carbides with good roundness are evenly distributed in the ferrite, and both the average size and the number of carbides are large, indicating to be the optimal process parameters. In contrast, when T is 650 ℃ and v is 0.2 ℃/s, the spheroidizing effect is the worst. The proportion of spheroidization increases with the increase of T, while under the same T, the lower the v is, the longer the spheroidization time is, the larger the size of the obtained spherical carbide particles is, and the better the spheroidization effect is.

Key words: high carbon chromium bearing steel GCr15, on-line spheroidizing annealing, carbide, cooling rate

中图分类号:

TG161

刘晓明, 张博, 吴冰冰, 孙刚飞, 邢云翔, 许荣昌, 李辉. 高碳铬轴承钢的在线球化退火工艺[J]. 金属热处理, 2023, 48(10): 134-137.

Liu Xiaoming, Zhang Bo, Wu Bingbing, Sun Gangfei, Xing Yunxiang, Xu Rongchang, Li Hui. On-line spheroidizing annealing process of high carbon chromium bearing steel[J]. Heat Treatment of Metals, 2023, 48(10): 134-137.

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高碳铬轴承钢的在线球化退火工艺

On-line spheroidizing annealing process of high carbon chromium bearing steel

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