What Is The Purpose Of Silicon Steel in A Transformer

Silicon steel: silicon steel is a silicon content of 0.5% -4.5% of the very low carbon silicon-iron alloy materials, with high magnetic permeability, low coercivity, resistance coefficient, etc., widely used in the manufacture of generators, motors, transformers, transformers and other equipment. According to the different production processes, silicon steel is divided into hot rolled silicon steel and cold rolled silicon steel two kinds, cold rolled sheet thickness uniformity, good surface quality, high magnetic, performance is better than the hot rolled sheet, therefore, the hot rolled sheet is faced with the trend of cold rolled sheet gradually eliminated. Cold rolled silicon steel according to the internal grain direction is divided into oriented silicon steel and non-oriented silicon steel. Oriented silicon steel grain is basically in one direction, high silicon content, mainly used in transformer manufacturing; non-oriented silicon steel grain distribution is chaotic, low silicon content, mainly used in motor manufacturing. Oriented silicon steel in the production will be identified by magnetic properties, magnetic susceptibility of less than 1.88T that is generally oriented silicon steel (CGO), magnetic susceptibility greater than 1.88T for high magnetic susceptibility oriented silicon steel (HiB). The performance of oriented silicon steel can be defined by iron loss, magnetic susceptibility and other indicators, usually using the grade to distinguish. The lower the value of iron loss and the higher the magnetic susceptibility of the orientated silicon steel, the better the performance, which can make the transformer power loss reduction. In addition, under the same capacity, the volume and weight of the transformer core made of oriented silicon steel are reduced, and can save silicon steel sheet, electromagnetic wire and insulation materials.

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