中国机械工程 ›› 2025, Vol. 36 ›› Issue (11): 2537-2543.DOI: 10.3969/j.issn.1004-132X.2025.11.008
• 机械基础工程 • 上一篇
孙富建1(
), 朱千放1, 梁志强2(
), 鲁艳军3, 陈金龙1, 肖玉斌4, 黄浩4, 袁剑平4
收稿日期:2024-04-01
出版日期:2025-11-25
发布日期:2025-12-09
通讯作者:
梁志强
作者简介:孙富建,男,1986年生,副教授。研究方向为电脉冲辅助切削加工。E-mail:lancesfj@126.com基金资助:
Fujian SUN1(
), Qianfang ZHU1, Zhiqiang LIANG2(
), Yanjun LU3, Jinlong CHEN1, Yubin XIAO4, Hao HUANG4, Jianping YUAN4
Received:2024-04-01
Online:2025-11-25
Published:2025-12-09
Contact:
Zhiqiang LIANG
摘要:
淬硬轴承钢恶劣的硬车加工性能显著降低了工件表面完整性,导致淬硬轴承钢摩擦磨损性能较差。基于电脉冲辅助切削技术开展了电脉冲辅助淬硬轴承钢的硬车实验,研究了其表面完整性和表面耐磨性。研究结果表明,相比于传统硬车淬硬轴承钢,电脉冲辅助硬车淬硬轴承钢工件表面完整性得到了显著提高,电脉冲辅助硬车淬硬轴承钢的摩擦因数降低了20%,磨痕宽度和深度分别减小了48.7%和93.33%,显著提高了淬硬轴承钢的摩擦磨损性能。
中图分类号:
孙富建, 朱千放, 梁志强, 鲁艳军, 陈金龙, 肖玉斌, 黄浩, 袁剑平. 电脉冲辅助硬车淬硬轴承钢表面摩擦学性能研究[J]. 中国机械工程, 2025, 36(11): 2537-2543.
Fujian SUN, Qianfang ZHU, Zhiqiang LIANG, Yanjun LU, Jinlong CHEN, Yubin XIAO, Hao HUANG, Jianping YUAN. Research on Tribological Properties of Hardened Bearing Steel Surfaces by Electric Pulse Assisted Hard Turning[J]. China Mechanical Engineering, 2025, 36(11): 2537-2543.
| w(C) | w(Mn) | w(Si) | w(S) | w(P) |
|---|---|---|---|---|
| 0.95~1.05 | 0.2~0.4 | 0.15~0.35 | ≤0.2 | ≤0.027 |
| w(Cr) | w(Mo) | w(Ni) | w(Cu) | w(Ni+Cu) |
| 1.30~1.65 | ≤0.1 | ≤0.3 | ≤0.25 | ≤0.5 |
表1 ZGCr61淬硬轴承钢的化学成分(质量分数) (%)
Tab.1 Chemical composition of ZGCr61 hardened bearing steel (mass fraction)
| w(C) | w(Mn) | w(Si) | w(S) | w(P) |
|---|---|---|---|---|
| 0.95~1.05 | 0.2~0.4 | 0.15~0.35 | ≤0.2 | ≤0.027 |
| w(Cr) | w(Mo) | w(Ni) | w(Cu) | w(Ni+Cu) |
| 1.30~1.65 | ≤0.1 | ≤0.3 | ≤0.25 | ≤0.5 |
| 抗拉强度/MPa | 屈服强度/MPa | 显微硬度 | 伸长率/% |
|---|---|---|---|
| 861.3 | 518.42 | 58HRC | 27.95 |
表2 ZGCr61淬硬轴承钢的力学性能
Tab.2 Mechanical properties of ZGCr61 hardened bearing steel
| 抗拉强度/MPa | 屈服强度/MPa | 显微硬度 | 伸长率/% |
|---|---|---|---|
| 861.3 | 518.42 | 58HRC | 27.95 |
| 组别 | 工件温度θw/℃ | 占空比η/% | 电流密度Jm/(A·mm-2) | 脉冲频率f/Hz |
|---|---|---|---|---|
| 1 | 25 | 50 | 0 | 0 |
| 2 | 25 | 50 | 0.075 | 300 |
| 3 | 25 | 50 | 0.225 | 300 |
表3 电脉冲辅助硬车实验工艺参数
Tab.3 Processing parameters of electric pulse assisted hard turning experiment
| 组别 | 工件温度θw/℃ | 占空比η/% | 电流密度Jm/(A·mm-2) | 脉冲频率f/Hz |
|---|---|---|---|---|
| 1 | 25 | 50 | 0 | 0 |
| 2 | 25 | 50 | 0.075 | 300 |
| 3 | 25 | 50 | 0.225 | 300 |
图4 电脉冲辅助硬车工件表面强化层材料动态再结晶的原理
Fig.4 Principle of dynamic recrystallization of workpiece surface strengthened layer by electric pulse assisted hard turning
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