低铁损高磁通密度无取向硅钢的应用与生产技术进展

Application and Development of High Magnetic Flux Density Low Iron Loss Non-oriented Silicon Steel

分析了高转矩和高转速条件下高效驱动马达铁芯材料对无取向硅钢磁性能要求,讨论了无取向硅钢的高磁通密度和低铁损对电机转矩和效率的影响,介绍了国内外高磁感无取向硅钢发展情况。在生产工艺上,提高钢质纯净度,弱化夹杂物和第二相粒子对畴壁移动和再结晶晶粒长大的钉扎作用,添加微量晶界和带钢表面的偏析元素促使有利织构发展等技术可提高无取向硅钢的磁通密度。

The requirements of high efficient drive motor core materials under the conditions of high torque and high speed were analyzed. The effects of high magnetic flux density of non-oriented silicon steel on the torque and efficiency of the motor were discussed. The development of non-oriented silicon steel with high magnetic was introduced. The magnetic flux density of non-oriented silicon steel sheet can be obviously improved by some production technologies, such as purification steel, weakening the pinning effects of inclusions and the second phase particles on the domain wall movement and recrystallization grain growth. Adding trace boundary and segregated element on the strip surface can improve the density of non-oriented silicon steel.