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：交貨狀態(tài)產(chǎn)品以終退火狀態(tài)交貨，帶涂層的產(chǎn)品兩面涂敷絕緣涂層，無涂層系列產(chǎn)品表面無底層和絕緣涂層。絕緣涂層的種類由供方根據(jù)自身生產(chǎn)工藝確定，也可由供需雙方協(xié)商確定。6.4 表面條件6.4.1 產(chǎn)品表面應(yīng)光滑清潔，無油脂，無銹漬，無影響使用的缺陷。6.4.2 產(chǎn)品表面允許存在不影響材料正常使用的基板缺陷、陜西咸陽當(dāng)?shù)氐讓尤毕?、陜西咸陽?dāng)?shù)亟^緣涂層缺陷，如輕微劃痕、陜西咸陽當(dāng)?shù)剌佊　㈥兾飨剃柈?dāng)?shù)厣?、陜西咸陽?dāng)?shù)芈毒?、陜西咸陽?dāng)?shù)厣?、陜西咸陽?dāng)?shù)匦“c(diǎn)、陜西咸陽當(dāng)?shù)匦馀?、陜西咸陽?dāng)?shù)亓鸭y等缺陷。6.4.3 產(chǎn)品表面的絕緣涂層應(yīng)附著良好，涂層顏色應(yīng)均勻，以保證在合理剪切操作中和在制造方的應(yīng)力退火條件下退火時不脫落，6.4.4 產(chǎn)品帶焊縫或帶缺陷交貨時，需插入空白紙。必要時，相關(guān)空白紙的標(biāo)記形式應(yīng)由供需雙方協(xié)商并在合同中注明。注：如果在協(xié)議中規(guī)定產(chǎn)品浸沒在液體中使用時，需確保液體和涂層之間的兼容性。6.5 剪切適應(yīng)性產(chǎn)品應(yīng)便于用適當(dāng)剪切工具在任何位置準(zhǔn)確地剪切成通常形狀。