Simulation-aided development of magnetic-aligned compaction process with pulsed magnetic field
Simulation-aided development of magnetic-aligned compaction process with pulsed magnetic field
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DOI：
10.1016/j.powtec.2018.01.035
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发表时间：
2018-04
影响因子：
5.2
通讯作者：
Rikio Soda;Kohei Tanaka;Takagi Kenta;K. Ozaki
中科院分区：
文献类型：
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作者：
Rikio Soda;Kohei Tanaka;Takagi Kenta;K. Ozaki
为了开发一种新的磁定向压制工艺，使用脉冲磁场的最新的高性能磁粉和理解的机制，在磁场中的颗粒取向行为，可视化的颗粒运动和预测的程度的取向度进行了使用的三维粒子为基础的模拟方法开发的。该模拟研究表明，在施加脉冲磁场期间，对准程度在毫秒级的时间内显著变化。此外，制备高度定向的绿色压块需要脉冲磁场的施加和压实动作的毫秒级同步控制。基于模拟结果，开发了能够以毫秒级的精度同步磁场的施加和压实动作的磁对准压实装置。结果表明，实验和仿真得到的最佳对准条件是一致的。通过使用所提出的同步方法，对准程度得到改善，最大磁能积分别提高了约9%和15%，与传统的方法相比。
In order to develop a new magnetic-aligned compaction process using a pulsed magnetic field for the most recent high performance magnetic powder and to understand the mechanism of particle orientation behavior in the magnetic field, visualization of particle motion and prediction of the degree of alignment were performed by using a three-dimensional particle-based simulation method developed by the authors. This simulation study revealed that the degree of alignment changed significantly in a time on the order of milliseconds during the application of the pulsed magnetic field. Furthermore, preparation of a highly oriented green compact required millisecond-level synchronization control of the application of the pulsed magnetic field and the compacting action. Based on the simulation results, a magnetic-aligned compacting apparatus capable of synchronizing the application of the magnetic field and the compacting action with accuracy on the order of milliseconds was developed. As a result, the optimum aligned condition in experiments and the simulation was consistent. By using the proposed synchronization method, the degree of alignment was improved and the maximum magnetic energy product was increased by about 9% and 15%, respectively, compared with the conventional method.