关键词: 高性能取向硅钢, 0.35 mm, 低温, 磁感, 铁损

Abstract: The manufacturing process of high magnetic induction oriented silicon steel heated by low-temperature slab of 0.35 mm thick was researched. During normalizing, the p_H2O/p_H2 of atmosphere in the high-temperature section was controlled for a little decarburization. While controlling the normalized structure, conditions were created for improving the decarburization efficiency during continuous annealing. During continuous annealing, the initial grain size and inhibitor strength were well matched by controlling the pressure ratio before decarburization, annealing temperature and nitriding amount. During high-temperature annealing, the atmosphere of high nitrogen proportion was used before secondary recrystallization to slow down the weakening of inhibitor ability, and finally the 0.35 mm thick oriented silicon steel was obtained with excellent magnetic properties of B₈₀₀≥ 1.91 T and P_{1.7/ 50} ≤ 1.15 W/kg .

Key words: high proformance grain oriented silicon steel, 0.35 mm, lower temperature, magnetic induction, core loss