王鹏川,金洙吉.铁基金刚石磁性磨料的制备及其性能研究[J].表面技术,2016,45(12):78-83.
WANG Peng-chuan,JIN Zhu-ji.Preparation and Performance of Iron-based Diamond Magnetic Abrasive[J].Surface Technology,2016,45(12):78-83 |
| 铁基金刚石磁性磨料的制备及其性能研究 |
| Preparation and Performance of Iron-based Diamond Magnetic Abrasive |
| 投稿时间：2016-04-05 修订日期：2016-12-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2016.12.013 |
| 中文关键词: 磁性磨料 金刚石微粉 化学复合镀 维氏硬度 结合力 粒径 表面粗糙度 |
| 英文关键词:magnetic abrasive diamond powder chemical composite plating Vickers hardness binding force particle size surface roughness |
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| 中文摘要: |
| 目的 制备一种新型磁性磨料，解决结合剂对磨粒相把持力不足的问题。方法 以碳钢钢球为铁磁相，以金刚石微粉为磨粒相，以化学镀镍层为结合剂，通过化学复合镀加滚镀的方式制备铁基金刚石磁性磨料。应用扫描电子显微镜（SEM）对磁性磨料的形貌和元素组成进行分析，采用XRD衍射仪对不同热处理温度下镀层的晶态结构进行检测，通过维氏硬度计和WS-2005涂层附着力划痕仪测量硬度和结合力。以45钢平面加工为例，研究不同粒径的铁磁相和磨粒相对磁性磨料加工性能的影响。结果 由扫描电镜观察磁性磨料表面形貌，发现金刚石微粉在整个镀层表面都有沉积且分布均匀，没有团聚现象，EDS能谱图显示镀层主要由Ni, P, C 3种元素组成。热处理温度为400 ℃时，镀层维氏硬度达到最高805.12HV，此时镀层与铁基体的结合力为130 N。磁力研磨加工实验中发现表面粗糙度和材料去除率与磨粒相和铁磁相的粒径有关，Ra最低下降到0.11 μm。结论 所制备的球形磁性磨料具有较高的硬度和结合力，磁力研磨加工性能优良。 |
| 英文摘要: |
| The work aims to prepare a new type of magnetic abrasive in order to overcome insufficient bonding of agglutinant to grain phase. With carbon steel balls as ferromagnetic phase, diamond powder as grain phase and chemical nickel plate as agglutinant, the iron-based diamond magnetic abrasive was prepared by combining chemical composite plating and barrel plating. The surface morphology and elemental composition of magnetic abrasive were analyzed by scanning electron microscope (SEM). Crystalline structure of the coating at different heat treatment temperatures was detected by X-ray diffractometer. Hardness and binding force were measured by Vickers hardness tester and WS-2005 coating adhesion scratch tester. The effect of ferromagnetic phase and abrasive grains with different grain diameters on processability of magnetic abrasive was studied in case of 45 steel flat machining. Diamond powder was found to be deposited and uniformly distributed on the whole plating surface and no agglomeration was detected when the surface morphology of magnetic abrasive was observed by scanning electron microscope. According to EDS energy spectrum diagram, the plating was mainly composed of three elements of Ni, P and C. Vickers hardness of the plating was up to 805.12HV (maximum) at the heat treatment temperature of 400 ℃ and the binding force between plating and iron substrate was 130 N. In the magnetic grinding machining experiment, the surface roughness and material removal rate related to the grain size of grain phase and ferromagnetic phase. In addition, the surface roughness of workpiece dropped to 0.11 μm (minimum). The hardness and binding force of the prepared spherical magnetic abrasive are good and the processability of magnetic grinding is excellent. |
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