Fabrication of grain-oriented silicon steel by a novel way: Strip casting process

Effect of annealing after strip casting on texture development in grain oriented silicon steel produced by twin roll casting

“…The as-cast strip with the same thickness and width as that of the hot-rolled sheet can be manufactured directly from the molten steel without continuous casting and hot rolling [4][5][6]. This advanced and energy-efficient technology has attracted significant attention and different strip-cast steels such as low carbon steel [7][8][9][10], stainless steel [11][12][13][14][15][16] and silicon steel [17][18][19][20][21][22][23][24][25] have been studied. The previous studies [11][12][13][14][15][16][17][18][19][20][21][22][23] indicated that the strip casting had texture advantage in manufacturing stainless steel and nonoriented silicon steel, resulting in excellent formability and magnetic properties.…”

“…Song [24] and Wang [25] studied the evolution of microstructure and texture of strip-cast grain oriented silicon steel and observed that hot rolling and two-stage cold rolling after strip casting can eliminate the inhomogeneity of primary recrystallization microstructure caused by coarse grains of the as-cast strip and provide the suitable Goss nuclei associated with secondary recrystallization. However, the strip-cast grain oriented silicon steel based on one-stage cold rolling process has not been studied and the effect of strip annealing after strip casting on secondary recrystallization has also not been studied to the best of our understanding.…”

Comparison of Precipitates and Texture Evolution in Nb-Bearing Grain-Oriented Silicon Steel Produced by Conventional Processing and Novel Twin-Roll Casting

“…Recently, a novel twin-roll casting was proposed to manufacture grain-oriented silicon steel, which is also considered to be an ideal process compared to the conventional processing route [7,8]. On one hand, the twin-roll casting was a simplified processing, which can supply a thin strip directly from molten steel with the same thickness and width as that of conventional hot rolled strip, and a series of intermediate metallurgical processes such as continuous casting, slab reheating, and hot rolling processes can be eliminated, resulting in potentially significant economic and environmental benefits [9,10].…”

“…Dorin [12] and Malekjani [13] demonstrated that the nitrides and sulfides of high strength and low alloy steels and stainless steels were in solid solution or precipitated in nano-scaled during strip casting. Song [8] and Wang [14,15] reported that the effectively inhibitors (MnS and AlN) could be precipitated in a single hot rolling, hot strip annealing or recrystallization annealing after cold rolling. However, these previous researches are mainly focused on how to obtain more dispersed and fine precipitates.…”

Microstructure and texture evolution of medium temperature grain-oriented silicon steel produced by industrialization

“…The slab is reheated at high temperature before hot rolling, and the coarse MnS and AlN in the slab are redissolved into the iron matrix, after that fine and dispersed second phase particles are precipitated during the hot rolling process, the grain size of the primary recrystallized sheet can be controlled due to the strong pinning effect of the inhibitors. When the annealing temperature reaches the decomposition temperature of the inhibitors, the Goss grain boundaries will migrate rapidly through destroying the pinning effect, and then undergo abnormal growth by consuming deformed matrix and other surrounding recrystallized grains [2,[6][7][8][9].…”