周强,田业冰,范增华,钱乘,孙志光.磁性剪切增稠光整介质的制备与加工特性研究[J].表面技术,2021,50(7):367-375.
ZHOU Qiang,TIAN Ye-bing,FAN Zeng-hua,QIAN Cheng,SUN Zhi-guang.Study on Preparation and Processing Characteristics of Magnetic Shear Thickening Finishing Media[J].Surface Technology,2021,50(7):367-375 |
| 磁性剪切增稠光整介质的制备与加工特性研究 |
| Study on Preparation and Processing Characteristics of Magnetic Shear Thickening Finishing Media |
| 投稿时间：2020-10-10 修订日期：2020-12-29 |
| DOI：10.16490/j.cnki.issn.1001-3660.2021.07.039 |
| 中文关键词: 光整加工 磁性剪切增稠 Ti-6Al-4V 表面粗糙度 磨料粒径 |
| 英文关键词:surface finishing magnetic shear thickening Ti-6Al-4V workpiece surface roughness abrasive particle size |
| 基金项目:国家自然科学基金资助项目(51875329，51905323);山东省泰山学者工程专项(tsqn201812064);山东省自然科学基金资助项目(ZR2017MEE050);山东省重点研发计划资助项目(2018GGX103008);山东省高等学校青创科技项目(2019KJB030);淄博市重点研发计划项目(2019ZBXC070) |
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| Author | Institution |
| ZHOU Qiang | School of Mechanical Engineering, Shandong University of Science and Technology, Zibo 255049, China |
| TIAN Ye-bing | School of Mechanical Engineering, Shandong University of Science and Technology, Zibo 255049, China |
| FAN Zeng-hua | School of Mechanical Engineering, Shandong University of Science and Technology, Zibo 255049, China |
| QIAN Cheng | School of Mechanical Engineering, Shandong University of Science and Technology, Zibo 255049, China |
| SUN Zhi-guang | School of Mechanical Engineering, Shandong University of Science and Technology, Zibo 255049, China |
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| 中文摘要: |
| 目的 解决Ti-6Al-4V器件的纳米级表面光整效率低的问题。方法 开发了一种磁性剪切增稠光整介质，利用设计的磁场发生装置，在主轴转速100 r/min、工作间隙0.5 mm的加工参数下，探究不同磨料粒径和磨料质量分数的光整介质对表面粗糙度的影响。结果 当磨料的质量分数为45%时，在碳化硅粒径为80 μm、羰基铁粉粒径为150 μm条件下，工件表面粗糙度值由初始的173 nm下降到92 nm;在碳化硅粒径为30 μm、羰基铁粉粒径为50 μm条件下，工件表面粗糙度值由初始的170 nm下降到79 nm;在碳化硅粒径为4 μm、羰基铁粉粒径为5 μm条件下，加工效果最优，Ti-6Al-4V工件的表面粗糙度由初始的169 nm下降到61 nm，表面粗糙度降低了64%。结论 在磨料粒径相同的条件下，随着磨料质量分数的提高，加工效率增加;在磨料质量分数相同的条件下，磨料粒径越小，获取的表面粗糙度值越小。通过金相显微镜和场发射扫描电子显微镜(FE-SEM)观察发现，工件表面的划痕显著减少，验证了所研制介质的有效性。 |
| 英文摘要: |
| For the low efficiency of nano-level surface finishing of Ti-6Al-4V devices, a magnetic shear thickening finishing medium is developed. Based on the processing parameters of spindle speed of 100 r/min and working gap of 0.5 mm, the influence of various abrasive particles and abrasive mass fractions on surface roughness are investigated using a designed magnetic field generator. The best processing effect was obtained when the mass fraction of the abrasive is 45%, the particle size of silicon carbide is 80 μm, and the particle size of carbonyl iron powder is 150 μm. The surface roughness of Ti-6Al-4V workpiece decreased from the initial 173 nm to 92 nm. When the particle size of silicon carbide is 30 μm, and the particle size of carbonyl iron powder is 50 μm, the surface roughness of Ti-6Al-4V workpiece decreased from the initial 170 nm to 79 nm. When the particle size of silicon carbide is 4 μm, and the particle size of carbonyl iron powder is 5 μm, the surface roughness of Ti-6Al-4V workpiece decreased from the initial 169 nm to 61 nm, and the surface roughness decreased by 64%. Under the condition of same abrasive particle size, the processing shows higher efficiency with the increase of abrasive mass fraction in the medium. With the same abrasive mass fraction, the smaller the abrasive particle size, the smaller the final surface roughness value. Scratches on the surface of the workpiece are significantly reduced, as shown bya metallographic microscope and field emission scanning electron microscope (FE-SEM), which verifies the effectiveness of the developed finishing media. |
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