采用宽度低的国产非晶合金带材制成铁芯后沿着带材宽度方向叠加成为高度合适的铁芯,并对其进行线切割,研究了铁芯切缝处的结构、形貌及切割前后工频下的磁性能。结果表明,线切割后切缝处结构由非晶态向晶态发生转变;切割后不改变铁芯的饱和磁感应强度,但磁化困难,损耗增加,铁芯切割后在B=1.3T,f=50Hz下的励磁容量由切割前0.32VA/kg增加到7.70VA/kg,损耗值由0.16W/kg增加到0.30W/kg;铁芯叠加不影响其磁性能,此法适用于制备非晶合金变压器。
The proper height iron-core were combined by single core,which were prepared by the low width homemade amorphous alloy ribbons.And then they were incised by line incise.The lancing morphology,structure of the amorphous alloy core were examined,and magnetic properties of cores before and after incised at the power frequency were investigated.The results show that the lancing structure is transforming non crystal to crystal after incised,while the saturation induction density unchanged but the core magnetization became difficult and the core loss has increased.After cutting,the excitation capacity and the core loss of amorphous cores increased to 7.70VA/kg from 0.32VA/kg and to 0.30W/kg from 0.16W/kg at f=50Hz,B=1.3T,respectively.Through combining cores to make a transformor core is practicable for it has no effect on magnetic property.
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