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：公稱厚度(mm)的 100 倍。用于表示無取向電工鋼的類型的字符，其中AV：普通型；AHV：型；AHV-M：高強(qiáng)度型；APV：高磁感型；AHS：高強(qiáng)度型 比總損耗 P1.0/400(W/kg)的 100 倍。小屈服強(qiáng)度（僅對應(yīng)高強(qiáng)度型產(chǎn)品）寶鋼英文名稱 Baosteel 的首字母。Q/BQB 481－20213示例 1：B20AV1300 表示公稱厚度為 0.20mm 的普通型無取向電工鋼， 比總損耗 P1.0/400為 13W/kg；示例 2：B27AHV1400 表示公稱厚度為 0.27mm 的型無取向電工鋼， 比總損耗 P1.0/400為 14W/kg；示例 3：B30APV1500 表示公稱厚度為 0.30mm 的高磁感型無取向電工鋼， 比總損耗 P1.0/400為 15W/kg；示例 4：B25AHV1300M表示公稱厚度為0.25mm的高強(qiáng)度型無取向電工鋼， 比總損耗P1.0/400為13W/kg；示例 5：B35AHS500 表示公稱厚度為 0.35mm 的高強(qiáng)度型無取向電工鋼，小屈服強(qiáng)度 500MPa。5.3 絕緣涂層的分類和代號絕緣涂層的分類和代號應(yīng)符合表2的規(guī)定。表 2 絕緣涂層的分類和代號絕緣涂層種類 代號 特征半有機(jī)薄涂層 A 改善沖片性，并有良好的焊接性半有機(jī)厚涂層 H 沖片性好，層間電阻高半有機(jī)無鉻薄涂層 K 涂層中不含鉻，具有良好的焊接性半有機(jī)無鉻厚涂層 M 涂層中不含鉻，具有良好的絕緣性能自粘接涂層 Z 涂層中不含鉻，固化后具有良好的粘接性能，鐵心固定強(qiáng)度大