赵涛,王优强,莫君,朱玉玲,何彦,李梦杰.织构协同磁流体对30CrMo3A 合金摩擦性能的影响[J].表面技术,2022,51(11):196-204, 225.
ZHAO Tao,WANG You-qiang,MO Jun,ZHU Yu-ling,HE Yana,LI Meng-jie.Effect of Textures and Magnetofluid Interaction on Tribological Properties of 30CrMo3A Alloy[J].Surface Technology,2022,51(11):196-204, 225 |
| 织构协同磁流体对30CrMo3A 合金摩擦性能的影响 |
| Effect of Textures and Magnetofluid Interaction on Tribological Properties of 30CrMo3A Alloy |
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| DOI：10.16490/j.cnki.issn.1001-3660.2022.11.017 |
| 中文关键词: 30CrMo3A齿轮合金 表面织构 二酯基磁流体 摩擦磨损 协同作用机理 |
| 英文关键词:30CrMo3A gear alloy the surface texture diester based magnetic fluid friction and wear coupling mechanism |
| 基金项目:国家自然科学基金（51575289）；山东省自然科学基金（ZR2021ME063） |
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| Author | Institution |
| ZHAO Tao | School of Mechanical and Automotive Engineering Shandong Qingdao 266520, China |
| WANG You-qiang | School of Mechanical and Automotive Engineering Shandong Qingdao 266520, China;Key Lab of Industrial Fluid Energy Conservation and Pollution Control, Ministry of Education, Qingdao University of Technology, Shandong Qingdao 266520, China |
| MO Jun | School of Mechanical and Automotive Engineering Shandong Qingdao 266520, China |
| ZHU Yu-ling | School of Mechanical and Automotive Engineering Shandong Qingdao 266520, China |
| HE Yana | School of Mechanical and Automotive Engineering Shandong Qingdao 266520, China |
| LI Meng-jie | School of Mechanical and Automotive Engineering Shandong Qingdao 266520, China |
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| 中文摘要: |
| 目的 探究不同工况下织构与磁流体对齿轮合金摩擦学性能的影响，并分析其协同作用机理。方法 采用纳秒激光器在30CrMo3A合金表面构造圆形微织构图案。利用UMT–3摩擦磨损实验机分别测试了二酯基磁流体（MF）及其基载液（DOS）在润滑条件下光滑齿轮合金表面（UT）和织构齿轮合金表面（TS）的摩擦学性能。利用激光共聚焦显微镜、扫描电镜和能谱仪观察并分析了不同磨损表面的表面形貌。结果 与UT–DOS相比，TS–DOS、UT–MF和TS–MF均能表现出良好的减摩性能，其中，TS–DOS在低载条件下的减摩效果相对最好，摩擦因数降低了约26.2%，随着载荷的增大，织构磨损严重，减摩效果减弱；TS–MF在不同载荷下的摩擦因数均能降低17%左右。TS–DOS的抗磨效果最好，在低载荷下基本无磨损，在重载荷下的磨损率最大降低了约60.6%，在高载荷下织构表面无法避免黏着磨损。二酯基磁流体会使磨损率增大，但能避免黏着磨损，在与织构的协同作用下，磨损率大幅下降。结论 织构能够有效存储润滑油和磨屑，磁流体有“滚珠”效应，且能够有效处理磨屑，两者的结合提升了合金的摩擦学性能，但是高浓度磁流体中的Fe3O4磁性纳米颗粒在较高载荷下易发生团聚，会加剧微磨削作用。 |
| 英文摘要: |
| The coupling effect of magnetic fluid technology and texture technology has attracted extensive attention, but in the tribology of gear materials, scholars mainly explore the single effect of texture or magnetic fluid through experimental and theoretical analysis. This work aims to investigate the tribological properties of 30CrMo3A alloy affected by the interaction between texture and magnetic fluid, and analyze the coupling mechanism.A circular microtexture pattern was formed on the surface of 30CrMo3A alloy by nanosecond laser. The diameter of the circular texture is about 466 μm, the maximum depth is about 50 μm, and the center distance is about 670 μm. The tribological properties of untextured surfaces (UT) and textured surfaces (TS) under the condition of diester based magnetic fluid (MF) and its base carrier fluid (DOS) lubrication were tested with UMT-3 friction and wear testing machine. The test frequency was 1 Hz, and the load was 10 N, 20 N, 40 N, 60 N and 100 N, respectively. LSCM was used to observe the wear scars and calculate the wear rate. SEM-EDS was used to observe and analyze the surface morphology of different wear marks, and the wear mechanism was obtained.The results showed that compared with UT-DOS, TS-DOS, UT-MF and TS-MF all showed good antifriction performance. Among them, the average friction coefficient of TS-DOS decreased by 26.2% at low speed and low load. With the increase of load, the ability of the texture to store lubricating oil and abrasive chips decreased, and its average friction coefficient increased. The frictional coefficients of UT-MF and TS-MF were basically unchanged. Under the loading of 20 N, the average frictional coefficients of UT-MF were reduced by 17.5% at most, while under different loads, the average frictional coefficients of TS-MF can be reduced by 17.5%.TS-DOS had the best anti-wear effect. There was almost no wear under low speed and low load conditions. With the increase of load, the texture was worn, and its anti-wear effect was weakened. The maximum wear rate of TS-DOS decreased by 60.6% under heavy load conditions. TS-MF had good wear resistance at low speed and low load as well as low speed and heavy load, with wear rate reduced by 58.6% and 14.2% respectively, while UT-MF only had wear resistance at low speed and low load.The wear surface of UT-DOS has serious adhesive wear, oxidation wear and abrasive wear. The texture can effectively store lubricating oil and wear debris, so as to reduce the adhesion wear and oxidation wear of the wear surface. Therefore, the wear form of TS-DOS is mainly abrasive wear, accompanied by slight adhesion wear and oxidation wear. Under the condition of magnetic fluid lubrication, the magnetic fluid can cover and transfer the wear debris, and the wear surface of UT-MF and TS-MF has almost no adhesion wear and oxidation wear. The wear form of UT-MF and TS-MF is mainly abrasive wear. In addition, Fe3O4 nanoparticles in the magnetic fluid can polish the worn surface more smoothly. However, Fe3O4 nanoparticles in the magnetic fluid with high mass fraction tend to agglomerate under high load, which will aggravate the micro-grinding effect of the magnetic fluid. |
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