摘要
研究了1.8%Si无取向硅钢冷轧板在退火温度860~920℃、保温时间50~120 s工艺退火后的晶粒、织构、铁损和磁感应强度。结果表明随着退火温度升高、保温时间延长,平均晶粒尺寸由33μm（860℃保温50 s）逐渐增大至60μm（920℃保温120 s）,相应的铁损由4.43 W/kg降低至3.44 W/kg。这说明平均晶粒尺寸是影响铁损的主要因素。随着退火温度升高和保温时间延长,对磁感应强度有利的{001}和{110}织构组分减弱,对磁感应强度不利的{111}织构组分增强,（{001}＋{110}）/{111}晶粒体积比减小,由860℃保温50 s时的2.16逐渐减小至920℃保温120 s时的1.02,相应的磁感应强度由1.689 T降低至1.659 T。因此,织构是影响磁感应强度的主要因素。而且,随着退火温度升高,（{001}＋{110}）/{111}晶粒体积比减小速度加快,即织构的恶化速度加快,导致磁感应强度的下降速度也加快。
The grain size, texture, iron loss and magnetic induction intensity of 1.8%Si non-oriented cold rolled silicon steel sheet after annealing at 860-920℃ for 50-120 s were studied. The results show that with annealing temperature and soaking time increasing, the average grain size increases from 33μm （860 ℃ for 50 s） to 60 μm （920℃ for120 s）, accordingly, iron loss decreases from 4.43 W/kg to 3.44 W/kg. This indicates the average grain size is a main factor in influencing the iron loss. As the annealing temperature and soaking time increase, the beneficial {001} and { 110} texture to magnetic induction intensity gets weaker while the unfavorable { 111} texture to magnetic induction intensity gets stronger. The volume ratio of （{001 } ＋{ 110}）/ {111 } decreases from 2.16 （860℃ for 50 s） to 1.02 （920℃ for120 s）, accordingly,the magnetic induction intensity decreases from 1.659 T to 1.689 T. Thus, the texture is the most important factor in influencing magnetic induction intensity. And with the increasing of annealing temperature, the texture volume ratio of （{001} ＋{110}）/{111} quickly decreases. Namely, deterioraition rate of texture accelerates, and the decrease of magnetic induction intensity also accelerates.
出处
《热加工工艺》
CSCD
北大核心
2016年第16期181-185,189,共6页
Hot Working Technology
关键词
无取向硅钢
退火温度
保温时间
晶粒尺寸
织构
non-oriented silicon steel
annealing temperature
soaking time
grain size
texture
