電工鋼硅鋼片In addition to the types listed above, there are also some special purpose electrical steel plates, such as 0.15 and 0.20mm thick 3％ Si cold-rolled non oriented silicon steel strips and 0.025, 0.05, and 0.1mm thick 3％ Si cold-rolled oriented silicon steel strips, used for medium and high-frequency motors, transformers, and pulse transformers； 0.7mm thick 3％ Si high-strength cold-rolled non oriented silicon steel plate for relays and power switches； High strength cold-rolled electrical steel plate for new high-speed motor rotors； Low carbon electrical steel hot-rolled thick and cold-rolled plates for magnetic shielding and high-energy accelerator electromagnets such as medical magnetic resonance tomography scanners； 4.5％ to 6.5％ Si high silicon steel plates for high-frequency motors, transformers, and magnetic shielding.Generally, motors, transformers, and other electrical components are required to have high efficiency, low power consumption, small size, and light weight. Electrical steel plates are usually guaranteed to have magnetic properties based on core loss and magnetic induction strength [1] [2]. The requirements for the performance of electrical steel plates are as follows:Low core loss (PT)Iron core loss refers to the ineffective electrical energy consumed by an iron core when magnetized in an alternating magnetic field of ≥ 50Hz, abbreviated as iron loss, also known as alternating loss, and its unit is W/kg. The ineffective electrical energy consumed due to various obstacles caused by magnetic flux changes not only loses electrical energy through the heating of the iron core, but also causes temperature rise of the motor and transformer. The iron loss (PT) of electrical steel includes three parts: hysteresis loss, eddy current loss (Pe), and anomalous loss (Pa). Electrical steel plates have low iron loss, which can save a lot of electricity, prolong the operating time of motors and transformers, and simplify cooling devices. Due to the iron loss of electrical steel plates, which accounts for 2.5％ to 4.5％ of the annual electricity generation in various countries, countries always try their best to reduce iron loss in the production of electrical steel plates, and use iron loss as the most important indicator to assess the magnetic properties of products. The iron loss value of products is used as the basis for classifying product grades. Cold rolled oriented electrical steel: Cold rolled oriented electrical steel is a high-end product in the field of electrical steel. Compared with cold rolled non oriented electrical steel, its magnetism has strong directionality； It has superior high magnetic permeability and low loss characteristics in the direction of easy magnetization rolling. The iron loss of oriented steel strip in the rolling direction is only 1/3 of that in the transverse direction, and the ratio of magnetic permeability is 6:1. Application: The main purpose of cold-rolled oriented silicon steel strip is for transformer manufacturing.Full process cold rolled non oriented silicon steel coating: The surface of the full process cold rolled silicon steel is coated with a semi transparent insulation coating, which has different codes in different standards. Taking Baosteel‘s Q/BQB 480 2014 as an example:

電工鋼硅鋼片自粘接涂層Z C3 C-3 - C-3涂層為有機成分，具有很高的層間電阻，并可以大幅提高鋼帶的沖片性能，很適合用于沖壓疊片。用戶使用時，先將鋼板沖制成鐵心疊片，然后加壓固定成型，在保壓條件下加熱固化，疊片彼此粘接在一起，形成整體。其固定方式和常見的鉚接、遼寧鐵嶺同城焊接、遼寧鐵嶺同城螺栓方式不同，剛度、遼寧鐵嶺同城強度更高，振動和噪音小。涂層交貨狀態(tài)為 B 狀態(tài)，即涂層還沒有發(fā)生完全固化，具有進一步粘接、遼寧鐵嶺同城固化的活性，涂層硬度、遼寧鐵嶺同城耐蝕性尚沒有達到 。涂層鋼卷倉儲有效期為半年。用戶固化的工藝為：a）爐烘溫度 160～230℃，模具壓緊的壓力為 0.3～3Mpa，時間保持1～3h；或 b）感應(yīng)固化的鐵心溫度 150~250℃，壓力 0.1~3MPa，時間保持 0.2~30min。固化后，涂層處于終穩(wěn)定的狀態(tài)，即 C 狀態(tài)，涂層硬度、遼寧鐵嶺同城強度、遼寧鐵嶺同城粘接力達到 。涂層不能承受正常的應(yīng)力退火溫度。涂層能承受 180℃的長期耐熱溫度；但考慮到粘結(jié)能力的穩(wěn)定性，適用于該涂層的工作溫度通常不超過 150℃。