Effect of cold-rolling on magnetic properties of non-oriented silicon steel sheets (Part II)

Huang, B. Y.; Kaido, Chikara; Yamashiro, Y.

doi:10.1016/s0304-8853(99)00686-1

Cited by 15 publications

(3 citation statements)

References 7 publications

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“…The results showed that Mn addition in a specific range decreases losses and increases permeability, favoring grain growth. Focusing on microstructure and texture, these characteristics are mainly affected by the manufacturing process conditions, and particularly by the cold rolling step and subsequent recrystallization in continuous annealing treatment [20,[43][44][45]. Al and Si also show how to influence NGO steel brittleness [46][47][48].…”

Section: Introductionmentioning

confidence: 99%

Ultra-Fast Heating Treatment Effect on Microstructure, Mechanical Properties and Magnetic Characteristics of Non-Oriented Grain Electrical Steels

Gaggiotti,

Albini,

Stornelli

et al. 2023

Applied Sciences

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This paper focuses on the effect of rapid annealing on Non-Grain Oriented Electrical Steel (NGO) in terms of microstructure, mechanical properties, and magnetic properties. The Ultra-Fast Heating (UFH) tests were performed by a transversal induction heater on NGO electrical steel samples (cold rolled down to 0.5 mm), varying the heating power (80 kW and 90 kW) and the speed of the strip through the induction heater. This allowed us to exploit heating rates (HR) in the range of 200–300 °C/s and targeting peak temperature (Tpeak) up to a maximum of 1250 °C. The comparison between the microstructure as obtained by conventional annealing and the ultra-fast heating process highlights a clear effect in terms of grain size refinement provided by the UFH. In particular, the average grain size as obtained by UFH ranges two/three times lower than by a conventional process. The results show the possibility of applying UFH to NGO steels, targeting mechanical properties such as those obtained by the standard process, combined with the benefits from this innovative heat treatment in terms of green energy and the minimization of CO2 emissions. Magnetic characterization performed by a single sheet tester (30 × 90 mm) showed that the values of core losses are comparable with conventional NGO grades.

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Section: Introductionmentioning

confidence: 99%

Ultra-Fast Heating Treatment Effect on Microstructure, Mechanical Properties and Magnetic Characteristics of Non-Oriented Grain Electrical Steels

Gaggiotti,

Albini,

Stornelli

et al. 2023

Applied Sciences

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“…So, the family of texture {100}<0vw> reduces hysteresis loss and, therefore, contribute to more economic use of steel in rotating machinery. It is interesting to obtain the largest number of grains with the direction [100], and a smaller number of those with the direction [111] parallel to the plate surface due to the characteristics of the crystal magnetic anisotropy of Fe-Si [1,2].…”

Section: Introductionmentioning

confidence: 99%

Texture and Microstructure Evolution during Box Annealing of a Non-Oriented-Grain Electrical Steel

Freitas

Silva

Tavares

et al. 2011

MSF

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Non-oriented grain type electrical steels are used mainly in electrical rotating machines such as motors and compressors, in which the magnetization direction rotates 360 ° every cycle while remaining in the plane of the plate. The performance of these devices is affected by crystallographic texture of electrical steels due to strong anisotropy of magnetic properties. The electrical steel is supplied in the form of plates which are processed by cold rolling and subsequent annealing. Both, cold rolling and annealing directly influence the formation of crystallographic texture components. During annealing, recrystallization occurs, and this phenomenon gives rise to changes in texture that influences the quality of the final product and its application. Several works have been published in the study of the evolution of crystallographic texture and grain size in this type of electrical steel. In this work, samples have been taken in industrial conditions at various temperatures during the annealing in a coil box. Electrical steel samples cold rolled with reductions of 50% and 70% in thickness were removed during the process of annealing, and the evolution of texture with increasing temperature was studied. Aspects related to recrystallization, grain size and the evolution of texture and magnetic properties were discussed. Texture and recrystallization were studied by X-ray diffraction and electron backscatter diffraction (EBSD). The magnetic properties were measured in a vibrating sample magnetometer.

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“…The researches of non-oriented silicon steel are mainly focused on the effect of main processing parameters on the microstructure and magnetic properties [1][2][3][4][5][6]. But in the actual production it is not enough to consider these only.…”

Section: Introductionmentioning

confidence: 99%

Hot Forming Behavior and Flow Stress Model of Steel 50A1300

Zhou

Liu

2011

AMR

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The researches of non-oriented silicon steel are mainly focused on the effect of main processing parameters on the microstructure and magnetic properties, but there have been few studied about its flow stress until now. In this paper, the non-oriented silicon steel 50A1300 of hot forming is studied by thermal-mechanical simulation method. The hot deformation behavior of the steel is explored and the flow stress model of the steel is established based on the creep mechanism. The model has good accuracy and is feasible.

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Effect of cold-rolling on magnetic properties of non-oriented silicon steel sheets (Part II)

Cited by 15 publications

References 7 publications

Ultra-Fast Heating Treatment Effect on Microstructure, Mechanical Properties and Magnetic Characteristics of Non-Oriented Grain Electrical Steels

Ultra-Fast Heating Treatment Effect on Microstructure, Mechanical Properties and Magnetic Characteristics of Non-Oriented Grain Electrical Steels

Texture and Microstructure Evolution during Box Annealing of a Non-Oriented-Grain Electrical Steel

Hot Forming Behavior and Flow Stress Model of Steel 50A1300

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