ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2022, Vol. 43 ›› Issue (6): 38-41.DOI: 10.20057/j.1003-8620.2022-00101

• 轴承钢专栏 • 上一篇    下一篇

GCr15轴承钢碳化物控制及其对压碎负荷的影响

官跃辉1,张林1,张剑锋1,陆长河1,翟蛟龙2,石长民3   

  1. 1江阴兴澄合金材料有限公司线材研究所,江阴214429;
    2江阴兴澄特种钢铁有限公司 棒材研究所,江阴214429;
    3山东东阿钢球集团有限公司技术部,东阿252201
  • 收稿日期:2022-08-22 出版日期:2022-12-01 发布日期:2022-11-18
  • 作者简介:官跃辉(1982-)男,硕士,高级工程师

Carbide Control of GCr15 Bearing Steel and Its Influence on Crushing Load

Guan Yuhui1,Zhang Lin1,Zhang Jianfeng1,Lu Changhe1,Zhai Jiaolong2,Shi Changmin3   

  1. 1 Jiangyin Xingcheng alloy material Co.,Ltd.,Institute of Wire rod,Jiangyin 214429;
    2 Jiangyin Xingcheng Special Steel Works Co.,Ltd.,Institute of Bar,Jiangyin 214429;
    3 Shandong donge steel ball Croup Co.,Ltd.,Department of Technology Dong'e 252201
  • Received:2022-08-22 Published:2022-12-01 Online:2022-11-18

摘要: 碳化物均匀性是影响轴承疲劳性能主要因素之一,对钢厂采用不同工艺生产的GCr15钢制成的钢球进行压碎试验,并对压碎后的钢球进行碳化物网状、带状分析。试验结果表明,延长高温扩散时间后,压碎负荷值提升;在此基础上进行控轧控冷,压碎负荷值进一步提升,并且提升幅度更显著。碳化物颗粒处于2.5~6μm,碳化物颗粒越大,压碎负荷值越小;坯料高温扩散温度1220~1240℃、时间16 h,且盘条终轧温度750~800℃、冷却速度4~5℃/s工艺生产的原材料制成钢球后的压碎负荷均值最高,达到了251.581kN。

关键词: GCr15轴承钢, 碳化物网状, 碳化物带状, 钢球, 压碎负荷

Abstract: Carbide uniformity is one of the main factors affecting the fatigue performance of bearings.The crushing test steel balls made of GCr15 raw materials produced by different processes in steel mills is carried out,and the crushed steel balls are analyzed by carbide network and banded structure test.The experimental results show the crushing load increases with the prolongation of the high temperature diffusion time,and the crushing load increases more significantly with the controlled rolling and cooling on this basis.When the carbide particles are between2.5 and 6 μm,the larger the carbide particles are,the smaller the crushing load value is.The average crushing load of the steel ball is the highest which peach to 251.581 kN. While the high temperature diffusion temperature of the billet is 1220- 1240 ℃,the time is 16 h,and the final rolling temperature of the coil is 750-800 ℃,and the cooling speed is 4-5 ℃/s.

Key words: CCr15 Bearing Steel;Carbide Network;Carbide Streak;Steel Ball, Crushing Load