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近几年来,一些国家对硅铁标准做了相应的修改和补充,特别是对电工钢用的75％硅铁中铝和钛含量,要求极为严格,因其严重影响变压器硅钢片的性能。这些标准中某些元素的规格变
In recent years, some countries have made corresponding amendments and supplements to the ferrosilicon standard. In particular, the requirements for aluminum and titanium content in 75% ferrosilicon for electrical steel are very strict because they seriously affect the performance of the transformer silicon steel sheet. The specifications of some of these standards change