Papers by Keyword: Non-Oriented Silicon Steel

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Authors: Shun Bing Zhou, Da Jun Feng, Zhao Jun Deng
Abstract: A measurement method for magnetic property of the non-oriented silicon steels WD23 and WD20 by X-ray diffraction (XRD) has been introduced. The measurement results show that this method is simple and the size(amount) of the required sample is small. Therefore, the method is reasonable.
464
Authors: Tie Ye, Zhen Yu Gao, Zhi Wen Lu, Zhi Guo Zhong
Abstract: The structure, texture, second phase and magnetic properties of non-oriented electrical steel with cold and heat slab were comprised through the production test. The research result shows that the grain size of hot rolled plate by cold slab is less than that of hot rolled plate by hot slab. But after cold rolling and annealing process, the grain size is consistent. Microstructure of hot rolled coil is recrystallized microstructure and the dispersion degree of texture orientation is high. Deformation makes the texture enhancement in cold rolling which become the strong texture based on {001} {111} and <110> texture. The Ti element has aggregation which can form hard impurities as TiN and TiSN to obstruct the recrystallization. Micro fine TiC formed in the annealing process which would block magnetic domain movement and reduce the magnetic properties of the product. MnS is precipitated impurities and the coarsening of MnS phase can reduce the domain block by improving the continuous annealing temperature and the magnetic field would be optimization.
181
Authors: Yuan Xiang Zhang, Li Guo Wu, Yun Bo Xu, Yang Wang, Li Qing Chen, Yong Mei Yu, Guo Dong Wang
Abstract: The influence of different secondary cooling conditions (air cooling and water cooling) on microstructure, texture and properties of Fe-1.2wt%Si non-oriented silicon strips prepared by twin-roll strip casting were studied. Specimens were examined by OIM, EBSD and X-RD. The microstructures obtained by water cooling are more homogeneous and coarse in grain size than that obtained by air cooling. The dominant {100} texture can be observed in the case of water cooled, while the air cooled strip show a diffuse texture characteristic. The annealed sheets subjected to water cooling than air cooling show higher permeability and lower core loss due to the presence of relatively larger grain size and more ideal fibre components such as Goss and Cube., It seems that rapid secondary cooling of as cast strips can furtherer optimize the microstructure and texture prior to cold rolling and then substantially the final magnetic properties of 1.2wt% Si non-oriented silicon steels.
798
Authors: Zheng Gui Zhang, Yan Dong Liu, Fu Wang
Abstract: The effect of temperature on the recrystallization texture and microstructure of non-oriented silicon steel under asymmetrically rolling condition was quantatively studied using X-ray diffraction technology. The results show that the texture component accumulates around {111}<112> when annealed at 800°C. Texture intensity is high and grain size is uniformly distributed between 50μm and 100μm with best magnetism. When annealed at 850°C and 900°C, texture component is scattered and the grain size is also bigger. However, for the annealing at 750°C, the texture component is similar to cold rolled process. The grain size is small and non-uniform, which is unfavorable to magnetism. The difference of forces along the fast and slow side of the roller results in different deformation texture and further affects the intensity of recrystallization texture along the two sides of the roller.
1314
Authors: Zi Li Jin, Wei Li, Li Zhen Guo
Abstract: In this paper, studied was the low carbon and low silicon (0.003%C,0.3%Si) cold-rolling steel sheet whose reduction ratio was 81% annealed at 870 °C in the laboratory salt-bath furnace and heated for 180s.The evolution of micro-orientations of grain coarsening at 1050°C and 1150°C on cold-rolling samples that were annealed at temperature 870°C and heated for 180s was studied by EBSD technology.
137
Authors: Xu Dong Zhou, Xiang Ru Liu
Abstract: 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.
1468
Authors: Xu Dong Zhou, Xiang Ru Liu, Xu Yi Shan
Abstract: 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.
3591
Authors: Zheng Xin Tang, Xu Dong Zhou
Abstract: 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 hot deformation of non-oriented silicon steel 50A1300 is studied by thermal-mechanical simulation method. The hot deformation behavior of the steel is explored and the flow stress prediction of the steel is established based on a kind of BPA ANN. A piecewise method is proposed in this paper, and the prediction with this new method has good accuracy.
105
Authors: Petra Gavendová, František Kováč, Ivan Petryshynets, Martin Sopko, Mária Molnárová
Abstract: The present work deals about nanoindentation measurements between particular grains with various orientation at room and at elevated temperatures ( 100°C, 200°C, 250°C). Nanohardness measurements were carried out in non-oriented silicon steel with columnar microstructure, in order to evaluate local variation of work hardening as function of crystallographic orientation. The dependence of texture on the applied condition was studied by EBSD (Electron Backscatter Diffraction) analysis. Hardness was shown to decrease with increasing temperature in each of individual grains. The differences of hardness values were observed also between particular grain orientations.
205
Authors: Marco Antônio Da Cunha, Sebastião Da Costa Paolinelli
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