Effects of Heat Treatment Under Strong Magnetic Field of 1T or More on Magnetic Properties of Non-Oriented Electrical Steel Sheet
Effects of Heat Treatment Under Strong Magnetic Field of 1T or More on Magnetic Properties of Non-Oriented Electrical Steel Sheet
复制标题
1T以上强磁场热处理对无取向电工钢板磁性能的影响
DOI：
10.1109/tmag.2018.2853622
复制
发表时间：
2018
影响因子：
2.1
通讯作者：
T. Todaka
中科院分区：
文献类型：
--
作者：
T. Kinoshita;K. Kohara;H. Shimoji;T. Sato;T. Todaka
为了提高无取向电工钢的磁性能，研究了热处理过程中外加直流磁场的作用。在本文中，我们报告在热处理过程中施加的磁场的大小和方向的影响，通过比较样品的磁性能，其中纵向平行于轧制方向（RD）或轧制横向（TD）。热处理温度控制在1123和1273 K。在热处理期间，平行于片材样品的纵向方向施加磁场，并且磁场强度最大为10 T。由于材料的磁各向异性，在磁场下热处理的样品的磁性能随材料的方向而变化。通过在冷却过程中施加一定的外磁场来控制磁特性，可以降低磁各向异性。在整个热处理过程中施加10 T的强磁场，即，在加热和冷却过程中，显著地导致材料RD的铁损增加和磁导率降低。然而，在TD中，由于所测量的样品的磁特性仅略微改变，因此所产生的铁损低于RD中的铁损。
The effects of applying an external dc magnetic field during heat treatment were studied with the objective of improving the magnetic properties of non-oriented electrical steel sheets. In this paper, we report on the effects of the magnitude and direction of the magnetic field applied during heat treatment by comparing the magnetic properties of samples in which the longitudinal direction is parallel to either the rolling direction (RD) or the rolling transverse direction (TD). The heat treatment temperature was controlled to be 1123 and 1273 K. During the heat treatment, the magnetic field was applied parallel to the longitudinal direction of sheet samples, and the magnetic field strength was 10 T at maximum. The magnetic properties of a sample heat-treated under the magnetic field vary with the direction of the materials because of their magnetic anisotropy. The magnetic anisotropy could be reduced by controlling the magnetic characteristics by applying a certain external magnetic field during cooling. Application of the strong magnetic field of 10 T throughout the heat treatment, i.e., during both heating and cooling, remarkably caused the iron loss to increase and the magnetic permeability to decrease in the RD of the material. However, in the TD, since the magnetic properties of the measured sample only changed slightly, the resulting iron loss was lower than that in the RD.