| 18CrNiMo7-6钢旋转弯曲疲劳试样磨削工艺优化 |
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| 引用本文： | 王栋,李宁,张锦涛. 18CrNiMo7-6钢旋转弯曲疲劳试样磨削工艺优化[J]. 组合机床与自动化加工技术, 2021, 0(2): 136-139,144 |
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| 作者姓名： | 王栋 李宁 张锦涛 |
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| 作者单位： | 郑州大学机械与动力工程学院;郑州大学河南省资源与材料工业技术研究院 |
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| 基金项目： | 国家自然科学基金重点项目(U1804254)。 |
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| 摘 要： | 渗碳淬火可以提高材料的疲劳性能,但在对热处理后旋转弯曲疲劳试样的磨削加工中存在废品率高、效率低等问题,为了高效高质量磨削出标准疲劳试样,提出一种径向圆跳动变形量检测方法以衡量热处理后变形程度,基于国标GB/T4337-2015中尺寸、形位公差以及表面质量要求,提出两种磨削加工方案,并进行同轴度误差检测与比较,对渗碳淬火...
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| 关 键 词： | 18CrNiMo7-6 旋转弯曲疲劳试样 复合磨削工艺 径向圆跳动 同轴度 |
Optimization of Grinding Process of 18CrNiMo7-6 Steel Rotating Bending Fatigue Sample |
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| WANG Dong,LI Ning,ZHANG Jin-tao. Optimization of Grinding Process of 18CrNiMo7-6 Steel Rotating Bending Fatigue Sample[J]. Modular Machine Tool & Automatic Manufacturing Technique, 2021, 0(2): 136-139,144 |
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| Authors: | WANG Dong LI Ning ZHANG Jin-tao |
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| Affiliation: | (School of Mechanical Power Engineering,Zhengzhou University,Zhengzhou 450001,China;Henan Province Industry Technology Research Institure of Resources and Materials,Zhengzhou University,Zhengzhou 450001,China) |
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| Abstract: | Carburizing and quenching can improve the fatigue performance of materials,but there are problems such as high scrap rate and low efficiency in the grinding process of rotating bending fatigue samples after heat treatment.In order to efficiently grind standard fatigue samples with high quality,a method is proposed the radial circular runout deformation detection method is used to measure the degree of deformation after heat treatment.Based on the size,shape and position tolerance and surface quality requirements of GB/T4337-2015,two grinding processing schemes are proposed,and the coaxiality error detection In comparison,the grinding process of the 18CrNiMo7-6 steel rotating bending fatigue specimen blank on the cylindrical grinder after carburizing and quenching was optimized to determine the final grinding plan.After grinding,the coaxiality error of the sample is 9.3μm,the surface residual stress is-233.84 MPa,and the average deviation Sa of the surface arithmetic is 0.208μm. |
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| Keywords: | 18CrNiMo7-6 rotating bending fatigue test specimen compound grinding process radial beating concentricity |
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