Coated 50TW290 0.5mm Electrical Steel Laminations

Product Specification

Electrical EI Silicon Steel Iron Core For Transformer

The temperature of the silicon steel sheet should not be too high or excessive during annealing. Excessively high will affect the insulation coating or bond the lamination. As for the general temperature of the silicon steel sheet, we will explain that the temperature of the generally oriented silicon steel sheet is about 800 degrees. The annealing temperature of non-oriented silicon steel sheet is about 700 degrees, and the protective atmosphere in the furnace is strictly controlled to be non-oxidizing atmosphere during annealing.
The selection is based on the principle that the iron core punching sheet is not oxidized, carburized and the surface insulation coating of the electrical steel strip (silicon steel sheet) is not significantly deteriorated. It is best to choose a hydrogen-nitrogen mixed gas containing 2-10% of hydrogen. The addition of a small amount of hydrogen ensures that the iron core punches are not oxidized. The dew point in the protective gas should generally be below 0 ° C.
The production of qualified silicon steel sheets has certain requirements on equipment and technology. Xianxian COSCO Electronics Co., Ltd. uses silicon steel produced by large manufacturers. It has a long-term cooperative relationship with Baosteel and Hebei Iron and Steel Group. While ensuring quality, it will purchase costs Reduced to the lowest, so as to ensure maximum profit for customers. Because of this, the silicon steel products produced by our factory are sold nationwide and firmly occupy the top three positions in the northern region. With a sincere heart, we hope to develop a win-win situation with more customers!