中国机械工程 ›› 2025, Vol. 36 ›› Issue (10): 2241-2248.DOI: 10.3969/j.issn.1004-132X.2025.10.010
• 机械基础工程 • 上一篇
刘宏伟1(
), 康仁科1, 朱祥龙1(
), 慕昊天1, 何方舟2, 陈莫2
收稿日期:2024-09-26
出版日期:2025-10-25
发布日期:2025-11-05
通讯作者:
朱祥龙
作者简介:刘宏伟,男,1994年生,博士研究生。研究方向为表面滚压强化技术与装备。E-mail:liuhw@mail.dlut.edu.cn基金资助:
Hongwei LIU1(
), Renke KANG1, Xianglong ZHU1(
), Haotian MU1, Fangzhou HE2, Mo CHEN2
Received:2024-09-26
Online:2025-10-25
Published:2025-11-05
Contact:
Xianglong ZHU
摘要:
采用滚压加工提高AISI 4340钢螺栓螺纹疲劳性能,以螺栓疲劳寿命为评价指标,通过正交试验优选滚压参数,并分析未滚压、欠滚压、优滚压和过滚压时螺纹的表面完整性与疲劳寿命,以阐明螺纹疲劳机制。结果表明,滚压参数对AISI 4340钢螺纹疲劳寿命有显著影响,显著性顺序为:滚压深度、主轴转速、滚压次数;优选参数为:滚压深度0.09 mm,主轴转速40 r/min,滚压次数3;欠滚压样件表面完整性改善效果低,过滚压样件加工硬化程度最大但损伤螺纹根部表面,优滚压螺纹表面粗糙度Sa和Sq分别降至0.124 μm和0.165 μm,残余压应力增至
中图分类号:
刘宏伟, 康仁科, 朱祥龙, 慕昊天, 何方舟, 陈莫. 滚压加工AISI 4340钢螺纹根部疲劳性能的提高[J]. 中国机械工程, 2025, 36(10): 2241-2248.
Hongwei LIU, Renke KANG, Xianglong ZHU, Haotian MU, Fangzhou HE, Mo CHEN. Improvement of Fatigue Performances of AISI 4340 Steel Thread Root by Rolling Processes[J]. China Mechanical Engineering, 2025, 36(10): 2241-2248.
| w(C) | w(Mn) | w(Si) | w(Cr) | w(Ni) |
|---|---|---|---|---|
| 0.420 | 0.670 | 0.300 | 0.800 | 1.720 |
| w(Mo) | w(S) | w(P) | w(Fe) | |
| 0.250 | 0.004 | 0.010 | 余量 |
表 1 AISI 4340钢的化学成分(质量分数) (%)
Tab.1 Chemical composition of AISI 4340 steel(mass fraction)
| w(C) | w(Mn) | w(Si) | w(Cr) | w(Ni) |
|---|---|---|---|---|
| 0.420 | 0.670 | 0.300 | 0.800 | 1.720 |
| w(Mo) | w(S) | w(P) | w(Fe) | |
| 0.250 | 0.004 | 0.010 | 余量 |
| 水平 | 因素 | ||
|---|---|---|---|
| 滚压深度/mm | 主轴转速/(r·min-1) | 滚压次数 | |
| 1 | 0.05 | 20 | 1 |
| 2 | 0.09 | 40 | 2 |
| 3 | 0.13 | 60 | 3 |
表 2 正交试验因素水平表
Tab.2 Orthogonal test factors and levels
| 水平 | 因素 | ||
|---|---|---|---|
| 滚压深度/mm | 主轴转速/(r·min-1) | 滚压次数 | |
| 1 | 0.05 | 20 | 1 |
| 2 | 0.09 | 40 | 2 |
| 3 | 0.13 | 60 | 3 |
| 样件 | 滚压深度/mm | 主轴转速/ (r·min-1) | 滚压次数 | 疲劳寿命(cycle) |
|---|---|---|---|---|
| 1 | 0.05 | 20 | 1 | 114 976 |
| 2 | 0.05 | 40 | 2 | 145 709 |
| 3 | 0.05 | 60 | 3 | 200 104 |
| 4 | 0.09 | 20 | 2 | 884 302 |
| 5 | 0.09 | 40 | 3 | 1 015 503 |
| 6 | 0.09 | 60 | 1 | 642 603 |
| 7 | 0.13 | 20 | 3 | 290 578 |
| 8 | 0.13 | 40 | 1 | 483 178 |
| 9 | 0.13 | 60 | 2 | 383 164 |
| 10 | 车削对照组 | 76 322 | ||
表 3 试验方案与测试结果
Tab.3 Experimental scheme and test results
| 样件 | 滚压深度/mm | 主轴转速/ (r·min-1) | 滚压次数 | 疲劳寿命(cycle) |
|---|---|---|---|---|
| 1 | 0.05 | 20 | 1 | 114 976 |
| 2 | 0.05 | 40 | 2 | 145 709 |
| 3 | 0.05 | 60 | 3 | 200 104 |
| 4 | 0.09 | 20 | 2 | 884 302 |
| 5 | 0.09 | 40 | 3 | 1 015 503 |
| 6 | 0.09 | 60 | 1 | 642 603 |
| 7 | 0.13 | 20 | 3 | 290 578 |
| 8 | 0.13 | 40 | 1 | 483 178 |
| 9 | 0.13 | 60 | 2 | 383 164 |
| 10 | 车削对照组 | 76 322 | ||
| 指标 | 滚压深度 | 主轴转速 | 滚压次数 | |
|---|---|---|---|---|
| 疲劳寿命(cycle) | k1 | 153 596 | 429 952 | 413 585 |
| k2 | 847 469 | 548 130 | 471 058 | |
| k3 | 385 640 | 408 623 | 502 061 | |
| Rj | 693 873 | 139 566 | 88 476 | |
表 4 疲劳寿命极差分析
Tab.4 Fatigue life range analysis
| 指标 | 滚压深度 | 主轴转速 | 滚压次数 | |
|---|---|---|---|---|
| 疲劳寿命(cycle) | k1 | 153 596 | 429 952 | 413 585 |
| k2 | 847 469 | 548 130 | 471 058 | |
| k3 | 385 640 | 408 623 | 502 061 | |
| Rj | 693 873 | 139 566 | 88 476 | |
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