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为了获得磁性能优良的高牌号无取向硅钢,系统地研究了稀土铈对2.9%Si无取向硅钢中夹杂物的变质及粗化,退火板的组织、织构及磁性能的影响规律。结果表明:钢中添加适量(质量分数为0.005 5%)的铈能使夹杂物聚集粗化,最终使成品再结晶晶粒尺寸增大,有利织构组分{100}和{110}面织构增多,不利织构组分{111}面织构减少,磁性能达到最佳。但是当铈添加过量(质量分数0.019%)时,其作用反而相反。
In order to obtain high-grade non-oriented silicon steel with excellent magnetic properties, the effects of rare earth cerium on the deterioration and coarsening of inclusions in 2.9% Si non-oriented silicon steel and the microstructure, texture and magnetic properties of the annealed sheet were studied systematically. The results show that adding appropriate amount of cerium (0.005%) in the steel can make the inclusions coarsen and finally make the grain size of the recrystallized product increase, which makes the textured components {100} and {110} Increasing the structure, adverse texture component {111} surface texture reduced, to achieve the best magnetic properties. However, when the excessive addition of cerium (mass fraction 0.019%), its role on the contrary.