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:

電工鋼硅鋼片寶鋼為新能源汽車驅(qū)動電機用戶提供從設(shè)計選材到產(chǎn)品量產(chǎn)的技術(shù)支持● 電機設(shè)計選材支持，實現(xiàn)卓越的性能和成本控制；● 鐵芯用材和結(jié)構(gòu)優(yōu)化，實現(xiàn)性能或技術(shù)降本；● 鐵芯加工制造支持，實現(xiàn)材料與裝備 匹配；● 新產(chǎn)品、湖北恩施當?shù)匦录夹g(shù)的應用，新能源汽車的競爭力。永磁同步電機是新能源汽車發(fā)展主流趨勢，具有率、湖北恩施當?shù)馗咿D(zhuǎn)矩、湖北恩施當?shù)馗咝砸约靶◇w積等優(yōu)點。 寶鋼產(chǎn)品具有低鐵損、湖北恩施當?shù)馗叽鸥泻透邚姸鹊奶攸c，滿足各類電機設(shè)計和制造需求?！?普通系列：具有低鐵損、湖北恩施當?shù)馗邚姸忍攸c；● 系列：具有低鐵損、湖北恩施同城高磁感特點；● 高強度系列：磁感、湖北恩施同城鐵損、湖北恩施同城強度三者綜合性能優(yōu)異；● 高磁感系列：更高的磁感，滿足高轉(zhuǎn)矩、湖北恩施同城電機小型化的需求；● 高強度系列：高強度，應用于高轉(zhuǎn)速或超高轉(zhuǎn)速轉(zhuǎn)子。

電工鋼硅鋼片：寶鋼激光刻痕磁疇細化型產(chǎn)品磁性能檢測采用了單片測試儀進行測試，通常情況下取向電工鋼只測試平行于軋制方向的磁性能水平，特殊情況可以約定分別檢測平行于軋制方向和垂直于軋制方向的磁性能。具體測試方法符合 GB/T 13789-2008（IEC 60404-3:2002，IDT）相關(guān)規(guī)定，測試試樣公稱尺寸為 500mm×500mm，測試試樣長度的誤差在±0.1％以內(nèi)，測試試樣的質(zhì)量誤差在±0.1％以內(nèi)。為保證磁性測試結(jié)果對帶鋼磁性能的代表性，裁剪大單片試樣時，試樣中心位置與帶鋼寬度方向中心位置偏移量控制在≤50mm，試樣邊部距離樣板邊部控制在≥100mm，試樣縱向與樣板軋制方向的偏離角度≤1.0°，如附圖 A.2 所示。試樣要求剪切整齊、湖北恩施當?shù)仄教梗苯切院茫砻媲鍧?，無影響性能試驗的缺陷，試樣邊部不允許剪切后打磨，剪切毛刺高度不應高于 20μm。大單片試樣不經(jīng)過應力退火處理直接測試。