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：同一產(chǎn)品在磁極化強(qiáng)度 1.5T、河南焦作同城頻率 50Hz 或 60Hz 條件下，按 GB/T 13789 單片法所測得的比總損耗值，參照 GB/T 13789-2008 附錄 C 中指定的關(guān)系式 C.2a 向方圈法數(shù)據(jù)轉(zhuǎn)換，兩種檢測方法所得比總損耗轉(zhuǎn)換因子δP 的擬合關(guān)系可參照 GB/T 13789-2008 附錄 C 關(guān)系式 C.3a，式中擬合有效區(qū)間為1.0T～1.8T，且該轉(zhuǎn)換關(guān)系只適用于 0.23mm 及以上厚度規(guī)格激光刻痕產(chǎn)品，0.20mm 及以下厚度規(guī)格激光刻痕產(chǎn)品的轉(zhuǎn)換關(guān)系根據(jù)實(shí)際檢測、河南焦作同城應(yīng)用對比實(shí)驗(yàn)結(jié)果進(jìn)行專項(xiàng)規(guī)定。當(dāng)供應(yīng)商和用戶協(xié)商對 P1.5/50 和 P1.5/60有明確要求時(shí)，轉(zhuǎn)換后的 P1.5/50和 P1.5/60應(yīng)符合表 3、河南焦作同城表 4、河南焦作同城表 5、河南焦作同城表 6、河南焦作同城表 7、河南焦作同城表 8 和表 9 的規(guī)定。7.1.7 其他測試條件下，轉(zhuǎn)換系數(shù) Fc 可由供應(yīng)商和用戶協(xié)商確定。7.1.8 當(dāng)需要提供磁化曲線時(shí)，按 GB/T 13789 單片法所測得數(shù)據(jù)參照 GB/T 13789-2008 附錄 C 關(guān)系式轉(zhuǎn)換。注1：多年來習(xí)慣上采用磁感應(yīng)強(qiáng)度，實(shí)際上愛潑斯坦方圈和單片測試儀測量的是磁極化強(qiáng)度。 磁感應(yīng)強(qiáng)度與磁極化強(qiáng)度的關(guān)系：J＝B-μ0H ，H＝800A/m條件下，B和J的差異約為0.001T