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不同工艺切割的无取向电工钢磁性能与化学成分之间的相关性

Correlation between Magnetic Properties and Chemical Composition of Non-Oriented Electrical Steels Cut through Different Technologies.

作者信息

Paltanea Gheorghe, Manescu Paltanea Veronica, Stefanoiu Radu, Nemoianu Iosif Vasile, Gavrila Horia

机构信息

Faculty of Electrical Engineering, University Politehnica of Bucharest, 313 Splaiul Independentei, District 6, RO-060042 Bucharest, Romania.

Faculty of Material Science & Engineering, University Politehnica of Bucharest, 313 Splaiul Independentei, District 6, RO-060042 Bucharest, Romania.

出版信息

Materials (Basel). 2020 Mar 23;13(6):1455. doi: 10.3390/ma13061455.

DOI:10.3390/ma13061455
PMID:32210045
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7142443/
Abstract

Due to worldwide regulations on electric motor manufacturing, the energy efficiency of these devices has to be constantly improved. A solution may reside in the fact that high quality materials and adequate cutting technologies should be carefully chosen. The magnetic properties of non-oriented electrical steels are affected by the cutting methods, through induced plastic, and thermal stresses. There is also an important correlation between chemical composition and different magnetic properties. In this paper, we analyze different industrial grades of non-oriented electrical steels, used in electrical machines' core manufacturing as M800-65A, M800-50A, M400-65A, M400-50A, M300-35A, and NO20. The influence of the cutting methods on the normal magnetization curve, total energy loss and its components, and relative magnetic permeability is investigated in alternating currents using a laboratory single sheet tester. The chemical composition and grain size influence are analyzed and correlated with the magnetic properties. Special attention is devoted to the influence of the increased cutting perimeter on the energy losses and to the way it relates to each chemical alloy constituent. The final decision in what concerns the choice of the proper magnetic material and the specific cutting technology for the motor magnetic cores is imposed by the desired efficiency class and the specific industrial applications.

摘要

由于全球对电动机制造的规定，这些设备的能源效率必须不断提高。一种解决方案可能在于应谨慎选择高质量材料和适当的切割技术。无取向电工钢的磁性能会受到切割方法、感应塑性和热应力的影响。化学成分与不同磁性能之间也存在重要关联。在本文中，我们分析了用于电机铁芯制造的不同工业等级的无取向电工钢，如M800 - 65A、M800 - 50A、M400 - 65A、M400 - 50A、M300 - 35A和NO20。使用实验室单片测试仪研究了切割方法对交流情况下正常磁化曲线、总能量损耗及其分量以及相对磁导率的影响。分析了化学成分和晶粒尺寸的影响，并将其与磁性能相关联。特别关注增加的切割周长对能量损耗的影响以及它与每种化学合金成分的关系方式。对于电机磁芯选择合适的磁性材料和特定切割技术的最终决策，取决于所需的效率等级和特定的工业应用。

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