Effect of Surface State on Domain Structure and Core Loss of Grain-Oriented Electrical Steel with High Permeability

The effects of inter-pass ageing temperature during cold rolling on structure, magnetic properties and mechanical properties of high permeability grain oriented electrical steel was studied. The samples were processed in a single-stage cold rolling to 0.27 mm thickness, with 88 % reduction, without and with inter-pass ageing treatment in order to determine the magnetic properties. To determine the changes in mechanical properties due to strain ageing, the samples underwent overlapped ageing, after pre-strain by rolling, under the same conditions of inter-pass ageing and then were subjected to tensile test. The effect of strain ageing was more pronounced in the thickness of 0.7 mm and the largest variation in yield strength was at 200°C in all evaluated thicknesses. At this temperature the largest amount of {110} orientation after primary recrystallization was also observed, as well as the lowest final grain size and consequently the best results of core loss. The magnetic induction had almost no alterations.

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ARMCO TRAN-COR ELECTRICAL STEEL GRADE H-0

Alloy Digest ◽

10.31399/asm.ad.fe0092 ◽

1990 ◽

Vol 39 (9) ◽

Keyword(s):

Physical Properties ◽

Surface Treatment ◽

Tensile Properties ◽

Grain Orientation ◽

Electrical Steel ◽

Core Loss ◽

Heat Treating ◽

Steel Grade ◽

Advanced Materials ◽

Electrical Steels

Abstract Armco Tran-Cor H-0 Electrical Steel, available in coils 0.009 (0.23 mm) thickness, offers an outstanding degree of grain orientation with resultant far lower core loss than possible with conventional grain-oriented electrical steels. It is used for transformer cores. This datasheet provides information on physical properties, hardness, elasticity, and tensile properties. It also includes information on heat treating and surface treatment. Filing Code: Fe-92. Producer or source: Armco Advanced Materials Corporation.

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A 200°C curable soft magnetic composite with high permeability and low core loss for power applications at >1 MHz

Journal of Magnetism and Magnetic Materials ◽

10.1016/j.jmmm.2021.168061 ◽

2021 ◽

pp. 168061

Author(s):

Xiaoyan Yao ◽

Panpan Lu ◽

Yanhong Tian ◽

Guo-Quan Lu ◽

Yunhui Mei

Keyword(s):

Core Loss ◽

Magnetic Composite ◽

High Permeability ◽

Soft Magnetic ◽

Soft Magnetic Composite

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The Research of Non-Oriented Electrical Steel Processed by Stress Relief Annealing Experiments

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.887-888.252 ◽

2014 ◽

Vol 887-888 ◽

pp. 252-256

Author(s):

Zhun Li ◽

Jing Liu ◽

Shi De Li ◽

Ze Lin Zheng

Keyword(s):

Magnetic Properties ◽

Electrical Steel ◽

Core Loss ◽

Reference Method ◽

Stress Relief ◽

Hydrogen Atmosphere ◽

Silicon Steel ◽

Pure Hydrogen ◽

Final Annealing ◽

Annealing Experiments

A high grade non-oriented electrical steel final annealing product was processed by stress relief annealing experiments under pure hydrogen atmosphere using different process parameters. The samples were compared in the aspects of magnetic properties and anisotropy, then analyzed the phenomena concerned with grain size, texture and precipitates aspects. The experiments showed that the samples magnetic properties were most improved in the 850 degrees stress relief annealing experiment, thus providing a reference method for non-oriented silicon steel stress relief annealing experiments and to obtain low core loss non-oriented silicon steel.

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Anisotropy of Magnetic Properties in Non-oriented Electrical Steel Sheets

Textures and Microstructures ◽

10.1155/tsm.11.159 ◽

1989 ◽

Vol 11 (2-4) ◽

pp. 159-170 ◽

Cited By ~ 18

Author(s):

M. Shiozaki ◽

Y. Kurosaki

Keyword(s):

Magnetic Properties ◽

Magnetic Induction ◽

Crystallographic Orientation ◽

Electrical Steel ◽

Core Loss ◽

Fluorescent Lamp ◽

Steel Sheets ◽

The Core ◽

Texture Change ◽

Electrical Steel Sheets

The anisotropy of magnetic properties in non-oriented electrical steel sheets can be evaluated by measuring Epstein specimens in the radial directions. The magnetic properties measured on ring cores are practically equal to the approximate values of magnetic properties determined by Epstein specimens in the radial directions. Non-oriented electrical steel sheets with anisotropy are not desirable for motors but are suitable for transformers and fluorescent lamp ballasts. The core loss and magnetic induction as measured with ring specimens are better with non-oriented electrical steel sheets with anisotropy than with non-oriented electrical steel sheets with random crystallographic orientation. This phenomenon depends on the texture change of the product.

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