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1.郑州航空工业管理学院 航空宇航学院,郑州 450046
2.河南航天液压气动技术有限公司,郑州 451191
王振,1982年生,男,河南商丘人,博士,副教授;主要研究方向为机械传动抗疲劳制造;wangzhen@zua.edu.cn。
收稿日期:2023-05-26,
修回日期:2023-10-08,
纸质出版日期:2025-02-15
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王振,孙浩,王国浩. 二次喷丸对18CrNiMo7-6齿轮钢残余应力影响的有限元分析[J]. 机械传动,2025,49(2):101-110.
WANG Zhen,SUN Hao,WANG Guohao. Finite element analysis of effect of double shot peening on residual stress of 18CrNiMo7-6 gear steel[J]. Journal of Mechanical Transmission,2025,49(2):101-110.
王振,孙浩,王国浩. 二次喷丸对18CrNiMo7-6齿轮钢残余应力影响的有限元分析[J]. 机械传动,2025,49(2):101-110. DOI: 10.16578/j.issn.1004.2539.2025.02.013.
WANG Zhen,SUN Hao,WANG Guohao. Finite element analysis of effect of double shot peening on residual stress of 18CrNiMo7-6 gear steel[J]. Journal of Mechanical Transmission,2025,49(2):101-110. DOI: 10.16578/j.issn.1004.2539.2025.02.013.
目的
2
针对齿轮在喷丸强化后残余压应力分布不均匀、表面粗糙度大的问题,研究二次喷丸强化技术对18CrNiMo7-6渗碳齿轮钢表面完整性的改善效果。
方法
2
基于Abaqus软件建立随机丸粒分布的喷丸强化模型,主要分析了单次喷丸强化和二次喷丸强化的喷丸速度、丸粒直径等参数对18CrNiMo7-6渗碳齿轮钢表层残余应力及表面形貌的影响规律。
结果
2
结果表明,二次喷丸强化与单次喷丸强化相比材料表面塑性变形更均匀;二次喷丸强化可以显著增大材料表层的残余压应力,使残余压应力最大值深度位置向表面移动,但对残余压应力层深度的影响并不显著;通过方差分析,在喷丸覆盖率为100%时,采用喷丸强度较小的加工参数进行第二次喷丸强化,对表层残余压应力均匀性的改善效果更好,表面残余压应力均匀性最大可提升28.76%。
Objective
2
To address the issues of uneven residual compressive stress distribution and high surface roughness in gears after shot peening
this study investigates the effect of double shot peening on the surface integrity of 18CrNiMo7-6 carburized gear steel.
Methods
2
A shot peening model with random shot distribution was established using Abaqus software. The effects of shot peening parameters such as shot velocity and shot diameter on the residual stress and surface morphology of the 18CrNiMo7-6 carburized gear steel were analyzed for both single and double shot peening.
Results
2
The results show that compared with single shot peening
double shot peening leads to more uniform plastic deformation on the material surface. The double shot peening significantly increases the residual compressive stress in the surface layer and shifts the depth position of the maximum residual compressive stress towards the surface
but has no significant effect on the depth of the residual compressive stress layer. Through variance analysis
when the shot coverage is 100%
using a lower shot peening intensity for the second shot peening process improves the uniformity of the surface residual compressive stress more effectively
with the maximum improvement reaching 28.76%.
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