電工鋼硅鋼片本文件按照 GB/T 1.1—2020《標準化工作導(dǎo)則 部分：標準化文件的結(jié)構(gòu)和起草規(guī)則》的規(guī)定起草。本文件參考 IEC 60404-8-8:2017 進行編制。本文件代替 Q/BQB 481－2018。本文件與 Q/BQB 481－2018 相比，主要修改內(nèi)容如下：——新增高強度型 AHV-M 產(chǎn)品；——新增高強度型 AHS 產(chǎn)品；——刪除表 2 半有機無鉻極厚涂層；——新增表 3 高強度型、云南曲靖高強度型二類產(chǎn)品磁性能和技術(shù)特性；——新增表 3 0.25mm 厚度規(guī)格產(chǎn)品；——刪除表 3 型 B15AHV1000、云南曲靖B35AHV1900 牌號產(chǎn)品、云南曲靖高磁感型 B35APV1900 牌號產(chǎn)品；——新增表 3 高磁感型 B15APV1000、云南曲靖B20APV1200 牌號產(chǎn)品；——提高了表 3 部分牌號產(chǎn)品的磁極化強度標準；——新增表 4 高強度型和高強度型二類產(chǎn)品的力學(xué)性能標準；——修改絕緣涂層附著性評價級別代碼；——加嚴了表 5 縱向厚度偏差標準；——加嚴了不平度標準；——刪除內(nèi)應(yīng)力檢測項目；——附錄 A 刪除了半有機無鉻極厚涂層；——修訂了附錄 B；——修訂附錄 D 部分牌號產(chǎn)品的磁性能和力學(xué)性能典型值；——新增附錄 D 高強度型和高強度型二類產(chǎn)品的磁性能和力學(xué)性能典型值；——修訂附錄 F 本文件與寶鋼股份原薄規(guī)格牌號對照表

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: