引用本文:于鑫， 孙杰， 李世涛， 李剑峰.滚压工艺对EA4T车轴表面质量完整性的影响及预测模型建立[J].中国表面工程,2014,27(5):87~95
YU Xin, SUN Jie, LI Shitao, LI Jianfeng.Influences of Burnishing Process on Surface Quality Integrity of EA4T Axles and Establishment of Prediction Model[J].China Surface Engineering,2014,27(5):87~95
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滚压工艺对EA4T车轴表面质量完整性的影响及预测模型建立
于鑫， 孙杰， 李世涛， 李剑峰1,2
1. 山东大学 机械工程学院 高效洁净机械制造教育部重点实验室， 济南 250061;2. 南车青岛四方机车车辆股份有限公司， 山东 青岛 266111
摘要:
表面质量完整性是决定车轴使用寿命和机车行驶安全的关键因素，滚压工艺对车轴表面质量完整性产生重要影响。通过EA4T车轴滚压正交试验，研究了工艺参数对表面质量完整性影响规律，建立了滚压表面粗糙度与残余应力预测模型，并进行回归方程方差分析与残差分析，验证了预测模型的有效性。结果表明： 工艺参数中进给速度对表面粗糙度和残余应力的作用最为显著，贡献率分别为粗糙度91.70%、周向残余应力48.95%、轴向残余应力48.18%。此外，滚压道次与滚压深度分别对周向和轴向残余应力有较大影响，贡献率分别为39.15%和33.19%；与其它因素相比，滚压速度对表面硬度影响较大，贡献率达到54.7%。
关键词:  EA4T车轴  工艺参数  表面粗糙度  表面残余应力  预测模型
DOI：10.3969/j.issn.1007-9289.2014.05.011
分类号:
基金项目:
Influences of Burnishing Process on Surface Quality Integrity of EA4T Axles and Establishment of Prediction Model
YU Xin, SUN Jie, LI Shitao, LI Jianfeng1,2
1. Key Laboratory of High Efficiency and Clean Mechanical Manufacture of Ministry of Education, School of Mechanical Engineering, Shandong University, Jinan 250061;2. CSR Qingdao Sifang Co., Ltd., Qingdao 266111, Shandong
Abstract:
Surface quality integrity is a key factor to determine the axle service life and further the locomotive running security, and the burnishing process has an important influence on the surface quality integrity of axles. Orthogonal experiment of EA4T axles was conducted to investigate the influences of process parameters on surface quality integrity. A comprehensive prediction model that can reflect surface roughness and residual stress was established and its validity was verified through variance analysis (ANOVA) and residual analysis of regression equation. The results show that the feed rate has the most pronounced effect on the surface roughness and residual stress, and its contribution rates to the surface roughness, circumferential residual stress and axial residual stress are 91.70%, 48.95% and 48.18%, respectively. Additionally, burnishing passes and depth have great influences on the circumferential and axial residual stress, and their contribution rates are 39.15% and 33.19%, respectively. Compared with other factors, the burnishing speed has a significant influence on the surface hardness, and its contribution rate reaches 54.7% .
Key words:  EA4T axles  process parameters  surface roughness  surface residual stress  prediction model
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