李军,张羽驰,明舜,王欢涛,朱永伟,左敦稳.固结磨料球对氟化钙晶体摩擦磨损性能的影响[J].表面技术,2019,48(12):196-203.
LI Jun,ZHANG Yu-chi,MING Shun,WANG Huan-tao,ZHU Yong-wei,ZUO Dun-wen.Effect of Fixed Abrasive Ball on Friction and Wear Properties of CaF2 Crystal[J].Surface Technology,2019,48(12):196-203 |
| 固结磨料球对氟化钙晶体摩擦磨损性能的影响 |
| Effect of Fixed Abrasive Ball on Friction and Wear Properties of CaF2 Crystal |
| 投稿时间：2019-06-04 修订日期：2019-12-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2019.12.023 |
| 中文关键词: 氟化钙晶体 摩擦磨损 固结磨料球 基体硬度 摩擦系数 |
| 英文关键词:CaF2 crystal friction and wear fixed abrasive ball matrix hardness friction coefficient |
| 基金项目:江苏省自然科学基金项目（BK20181294）；江苏省“六大人才高峰”高层次人才项目（JXQC-010）；中央高校基本科研业务费专项资金资助（NS2019028）；研究生创新基地（实验室）开放基金（KFJJ20180514） |
| 作者 | 单位 |
| 李军 | 南京航空航天大学 机电学院，南京 210016 |
| 张羽驰 | 南京航空航天大学 机电学院，南京 210016 |
| 明舜 | 南京航空航天大学 机电学院，南京 210016 |
| 王欢涛 | 南京航空航天大学 机电学院，南京 210016 |
| 朱永伟 | 南京航空航天大学 机电学院，南京 210016 |
| 左敦稳 | 南京航空航天大学 机电学院，南京 210016 |
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| Author | Institution |
| LI Jun | College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
| ZHANG Yu-chi | College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
| MING Shun | College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
| WANG Huan-tao | College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
| ZHU Yong-wei | College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
| ZUO Dun-wen | College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
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| 中文摘要: |
| 目的 通过改变固结磨料球的基体和磨料特性，研究氟化钙晶体的摩擦磨损性能，为超精密加工中研磨抛光氟化钙晶体固结磨料垫的选择提供指导。方法 基于固结磨料加工技术制备固结磨料球，并与氟化钙晶体对磨。研究固结磨料球的磨料种类（金刚石和氧化铈两种磨料）、基体硬度、磨粒粒径对摩擦系数、划痕截面积、划痕处粗糙度的影响。结果 金刚石磨料对磨的晶体表面划痕截面积S=480 μm2，划痕处粗糙度Ra=85.3 nm，摩擦系数的平均值μ=0.537；氧化铈对磨磨料的S=307 μm2，Ra=74.7 nm，μ=0.543。与氧化铈相比，金刚石磨料对磨的晶体表面产生划痕截面积、划痕处的粗糙度均较大，摩擦系数达到稳定的时间短，且摩擦系数的平均值较小。随着基体硬度增大，产生的划痕截面积逐渐增大。当基体硬度适中时（Ⅲ型基体），划痕截面积趋于稳定，S稳定在450 μm2左右，此时划痕处粗糙度值也最小，为85.8 nm。在基体Ⅲ、Ⅳ两处，划痕截面轮廓的对称性较好。随着基体硬度增加，摩擦系数达到稳定的时间逐渐减小，动荡幅度也减小，但摩擦系数平均值增大。随着磨粒粒径增大，划痕截面积和划痕处的粗糙度值均增大，摩擦系数达到稳定的时间增加，且摩擦系数平均值增大。结论 在选择固结磨料垫加工氟化钙晶体时，应选择金刚石磨料和基体Ⅲ，而磨粒粒径则需根据材料去除率和表面质量的要求做出相应选择。 |
| 英文摘要: |
| The paper aims to study the friction and wear properties of CaF2 crystals by changing the matrix and abrasive properties of the fixed abrasive balls and provide guidance for selection of a fixed abrasive pad for lapping and polishing of calcium fluoride (CaF2) crystals in ultra-precision machining. Based on fixed abrasive machining technique, fixed abrasive ball was prepared and ground against CaF2 crystal. The effect of abrasive types (diamond and cerium oxide abrasives), matrix hardness and abrasive grain size on friction coefficient of the grinding, the cross-sectional area and the roughness of the scratch were investigated. The results showed that, the scratch area S of the diamond abrasive on the milled surface was 480 μm2, the scratch roughness Ra was 85.3 nm, the average friction coefficient μ was 0.537, and those of the cerium oxide grain were S=307 μm2, Ra= 74.7 nm, μ=0.543, respectively. Compared with cerium oxide, the diamond abrasives had larger scratches section and roughness on the crystal surface, and friction coefficient reached a stable state in a short time, and the average value of friction coefficient was smaller. With the increase of matrix hardness, the section area of the scratches gradually increased. When the matrix hardness was moderate (the matrix of type Ⅲ), the section area of the scratches tended to be stable at 450 μm2, and the scratch roughness Ra was 85.8 nm, which was also the smallest. The symmetry of the scratch profile at the matrix III and IV was good. The time of friction coefficient to reach stability decreased with the increase of matrix hardness, and the turbulence range was smaller, but the average value of friction coefficient was larger. With the increase of particle size, the roughness value of the scratch area and the scratch area both increased, and the longer the time of friction coefficient to reach the stable state, the larger the average value of friction coefficient was. When processing CaF2 crystals with a fixed abrasive pad, the diamond abrasive and matrix III should be selected, and the size of the abrasive particle should be considered depending on the demand of material removal rate and surface quality. |
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