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高频逆变焊机的工作频率在20kHz 左右,作为电源心脏的主变压器,传统的铁芯材料铁氧体虽高频损耗较低,但其低频段(100kHz 以下)的磁特性不太好,又因饱和磁感应值(Bs)较低,铁芯的体积和重量仍较大,此外,铁氧体的居里温度较低,热稳定性差,温度稍高即导致Bs 值降低,易饱和,工作状态不稳定,不适合于高频大功率下使用。纳米晶材料,具有优良的综合磁性能,特别是应用在高频大功率逆变焊机上,作为逆变变压器的铁芯材料已是独占鳌头。
Frequency inverter welding machine operating frequency of 20kHz or so, as the power of the heart of the main transformer, the traditional core material ferrite, although the high frequency loss is low, but its low frequency band (100kHz below) the magnetic properties are not very good, In addition, the ferrite has a lower Curie temperature and lower thermal stability due to a lower saturation saturation magnetization value (Bs), and the ferrite also has a lower Bs value and is easier to be saturated and works State unstable, not suitable for high-frequency high-power use. Nanocrystalline materials, with excellent magnetic properties, especially used in high frequency inverter welding machine, as the core of the inverter transformer is the champion.