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

Materials ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1455 ◽  
Author(s):  
Gheorghe Paltanea ◽  
Veronica Manescu (Paltanea) ◽  
Radu Stefanoiu ◽  
Iosif Vasile Nemoianu ◽  
Horia Gavrila
Keyword(s):  
Magnetic Properties ◽  
Chemical Composition ◽  
Thermal Stresses ◽  
Industrial Applications ◽  
Final Decision ◽  
Electrical Steels ◽  
Relative Magnetic Permeability ◽  
Important Correlation ◽  
Single Sheet ◽  
Normal Magnetization

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.

Modeling the Magnetic Properties of Non-Oriented Electrical Steels Based on Microstructural Parameters

2011 ◽  
Vol 702-703 ◽  
pp. 734-737 ◽  
Author(s):  
Hadi Pirgazi ◽  
Roumen H. Petrov ◽  
Leo Kestens
Keyword(s):  
Grain Size ◽  
Magnetic Properties ◽  
Chemical Composition ◽  
Grain Boundary ◽  
Grain Boundaries ◽  
Quantitative Model ◽  
Experimental Results ◽  
Pole Density ◽  
Electrical Steels ◽  
Magnetization Behavior

Magnetic properties of electrical steels such as magnetization behavior and electrical losses are mainly related to chemical composition, crystallographic orientation and microstructure. By now, several models have been proposed to empirically correlate magnetic properties and affecting parameters. A quantitative model based on physical understanding of the interaction between the magnetic field variables (e.g. domain structure) and local microstructural variables (e.g. grain orientation and misorientation, grain boundary plane inclination) is still missing. To obtain a better understanding of the interaction between grain boundaries and domain walls, the magnitude of free pole density at grain boundaries was taken into account. Experimental results from 3-dimentional EBSD experiments were employed to measure the grain boundary orientation for several samples with different chemical composition and grain size. The free pole density was calculated using the relative misorientation between adjacent grains, and was included in a model together with grain size, magnetocrystalline anisotropy energy and silicon equivalent. By comparison with the experimental results of the magnetic induction measured at low, medium and high magnetic fields, is shown that the magnetization behavior can be more accurately predicted when the above mentioned phenomena are taken into account.

ARMCO DI-MAX NONORIENTED ELECTRICAL STEELS

Alloy Digest ◽  
1999 ◽  
Vol 48 (1) ◽  
Keyword(s):  
Magnetic Properties ◽  
Physical Properties ◽  
Tensile Properties ◽  
Core Loss ◽  
Electrical Steels

Abstract Armco DI-MAX nonoriented electrical steels have practically identical magnetic properties in any direction of magnetism in the plane of the material. They have superior permeability at high inductions, low average core loss, good gage uniformity, excellent flatness, and a high stacking factor. This datasheet provides information on composition, physical properties, hardness, and tensile properties. Filing Code: FE-88. Producer or source: Armco Inc., Specialty Steels Division. Originally published April 1989, revised January 1999.

scholarly journals Effect of Industrial Impregnation Process on the Magnetic Properties of Electrical Steels

2021 ◽  
pp. 167942
Author(s):  
H. Helbling ◽  
A. Benabou ◽  
A. Van Gorp ◽  
A. Tounzi ◽  
M. El Youssef ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Electrical Steels ◽  
Impregnation Process
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