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研究了高磁感取向硅钢中C、Mn含量对磁性和板坯加热温度的影响。将不同成分的3％Si高磁感取向硅钢板坯在1225℃～1400℃之间加热并热轧成2.3mm厚。热轧板常化后经一次冷轧成0.35mm。高温退火的试样用双片法测量其磁性。结果证明,钢中的C含量对成品磁性有着重要的影响。当钢中含C量低于0.026％时,即使板坯加热温度高达1400℃也不能使成品发生二次再结晶,磁性极低。 为了得到高磁性所需的板坯加热温度下限随钢中的C、Mn含量而变化。适当提高钢中C含量和降低Mn含量可把板坯加热温度降低到1225℃。
The effect of C and Mn content in the high-induction oriented silicon steel on the magnetic properties and slab heating temperature was studied. 3% Si high magnetic induction oriented silicon steel slabs of different compositions were heated and rolled to a thickness of 2.3 mm at a temperature between 1225 ° C and 1400 ° C. After the normalization of hot-rolled sheet by a cold-rolled into 0.35mm. High-temperature annealed specimens were measured for their magnetism by the two-piece method. The results show that the C content of steel has an important impact on the finished product magnetism. When the content of C in the steel is less than 0.026%, the secondary recrystallization of the finished product can not be performed even if the slab heating temperature is as high as 1400 ° C, resulting in a very low magnetic property. The lower limit of the slab heating temperature required to obtain high magnetic properties varies with the C, Mn content in the steel. Properly increase the C content in steel and reduce the Mn content slab heating temperature can be reduced to 1225 ℃.