Preparation of non-oriented silicon steel with high magnetic induction using columnar grains

The submerged entry nozzle (SEN) clogging has been happening during continuous casting (or CC for short) for nonoriented silicon steel. To solve the problem, the paper studied a flow rate through SEN, a node attached to one of them, and the impact on the clogging. The results showed that when SEN is clogged seriously, the casting speed has to decrease below the target casting speed and that SEN clogging can be predicted by comparing the actual value and the theoretical one of a casting speed. Al2O3 and its composite inclusions caused the SEN clogging and the addition of Ca can solve SEN clogging during CC of the silicon steel both theoretically and practically. Furthermore, the impact of the addition of Ca on the magnetic properties of the steel were analyzed. The results showed that the core loss and the magnetic induction of the silicon steel decreased by using the addition of Ca, which generated more dissolved Aluminum, and the addition of Ca generated more harmful textures, which reduced the magnetic induction.

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Effects of segregated sulfur on recrystallization texture and magnetic induction in thin-gauged 3% silicon steel

IEEE Transactions on Magnetics ◽

10.1109/20.800528 ◽

1999 ◽

Vol 35 (5) ◽

pp. 3373-3375 ◽

Cited By ~ 2

Author(s):

K.N. Chai ◽

N.H. Heo ◽

J.G. Na ◽

H.-T. Jeong ◽

S.R. Lee

Keyword(s):

Magnetic Induction ◽

Recrystallization Texture ◽

Silicon Steel

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Microstructure & texture evolution and magnetic properties of high magnetic-induction 6.5% Si electrical steel thin sheet fabricated by a specially designed rolling route

Journal of Central South University ◽

10.1007/s11771-016-3098-9 ◽

2016 ◽

Vol 23 (3) ◽

pp. 523-528 ◽

Cited By ~ 1

Author(s):

Hao-ze Li ◽

Hai-tao Liu ◽

Zhen-yu Liu ◽

Xiang-long Wang ◽

Zhong-han Luo ◽

...

Keyword(s):

Magnetic Properties ◽

Magnetic Induction ◽

Electrical Steel ◽

Texture Evolution ◽

Thin Sheet ◽

Rolling Route ◽

High Magnetic Induction

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Study of Microstructure and Magnetic Properties on High-Silicon Steel Composite Sheet

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.401-403.828 ◽

2013 ◽

Vol 401-403 ◽

pp. 828-831

Author(s):

Xing Wen Yang ◽

Jing Liu ◽

Jing Tao Han ◽

Shuai Ji

Keyword(s):

Magnetic Properties ◽

Magnetic Induction ◽

Silicon Content ◽

Silicon Steel ◽

Iron Loss ◽

Composite Sheet ◽

High Silicon Steel ◽

Composite Casting ◽

Steel Composite ◽

High Silicon

High-silicon composite casting blank with the silicon content of 12wt% in core layer and with the silicon content of 3wt% in coating layer was fabricated by composite casting. The high-silicon steel composite sheet with smooth surface and good shape can be obtained by hot rolling and warm rolling. After high temperature diffusion and pickling process, the composite sheet with thickness of 0.44mm and homogeneous silicon content of 5.8wt.% could be achieved finally. The test results of magnetic properties show that the magnetic induction intensity B50and iron loss P15/50are 1.778T and 2.892w/kg respectively. It implies that the high-silicon steel composite sheet with high magnetic induction and low iron loss can be prepared by composite casting and rolling process.

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Microstructure, Texture and Inhibitors of the As-Cast and Hot Rolled Grain-Oriented Silicon Steel by Strip Casting

Materials Science Forum ◽

10.4028/www.scientific.net/msf.852.101 ◽

2016 ◽

Vol 852 ◽

pp. 101-104 ◽

Cited By ~ 1

Author(s):

Wen Qiang Liu ◽

Cheng Shuai Lei ◽

Han Mei Tang ◽

Hong Yu Song ◽

Hai Tao Liu

Keyword(s):

Hot Rolling ◽

Texture Evolution ◽

Fiber Texture ◽

Silicon Steel ◽

Rolling Reduction ◽

Recrystallization Annealing ◽

Goss Texture ◽

Steel Strips ◽

Columnar Grains ◽

Hot Rolled

The microstructure and texture evolution of the as-cast and hot rolled grain-oriented silicon steel strips was investigated, and the precipitation of the inhibitors of the hot rolled strips was clarified. The results showed that the microstructure of the as-cast strip was characterized by coarse columnar grains with strong {001}<0vw> fiber texture. The microstructure of hot rolled strips was composed of ferrite and pearlite and the microstructure was gradually refined with increasing hot rolling reduction. In the hot rolled strips, α and γ fiber textures were enhanced at the expense of initial {001}<0vw> fiber texture and Goss texture was generated in the surface and sub-surface layer with increasing hot rolling reduction. Besides, a great number of dispersed MnS particles with the size of 20-30nm were observed in the hot rolled strips. These MnS particles could act as the effective inhibitors during the second recrystallization annealing of the grain-oriented silicon steel.

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Influence of Duty Cycle on Composition and Microstructure of Siliconized Layer Using Pulse Electrodeposition

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.139-141.666 ◽

2010 ◽

Vol 139-141 ◽

pp. 666-669 ◽

Cited By ~ 3

Author(s):

Hai Li Yang ◽

Yan Li ◽

Yun Gang Li ◽

Guo Zhang Tang ◽

Ning He ◽

...

Keyword(s):

Duty Cycle ◽

Molten Salts ◽

Layer Structure ◽

Silicon Steel ◽

Average Current Density ◽

Cross Sectional ◽

Columnar Grains ◽

Average Current ◽

Si Content ◽

Equiaxed Grains

The siliconized layer was pulse electrodeposited on grain oriented low-silicon steel sheet substrate in KCl-NaCl-NaF-SiO2 molten salts and the influence of duty cycle on the composition and microstructure of the siliconized layer was investigated. The results showed that when the duty cycle was in the range of 10% to 50% at average current density 30mA/cm2, Si content of siliconized layers was similar and the thickness of the layer was did not change much with different duty cycle. Cross sectional observation revealed that the siliconized layers had a two-layer structure. The top layer composed of columnar grains and a transition layer with equiaxed grains was close to the substrate. The layer was unsmooth when the duty cycle was 10%. While the surface appeared smooth and dense and the grains were fine when the duty cycle were 20% and 30%. The layer became more porous as the duty cycle increased to 40% and 50%.

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