電工鋼硅鋼片Electrical steel, also known as silicon steel sheet, is an indispensable metal material in the power, electronics, and military industries, and is also the largest functional material in production. It is mainly used as the iron core for various motors, generators, and transformers. Since it is a functional material, its performance testing also revolves around "function". These indicators are often mentioned in trade and processing processes, and a brief understanding can help everyone better carry out their work. The performance testing of electrical steel mainly includes the following aspects: magnetic inspection, stacking coefficient inspection, coating adhesion inspection, repeated bending inspection, size and shape surface inspection, and conventional mechanical property inspection. In addition to the types of products 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, which are used as intermediate and intermediate grade High frequency motors and transformers, as well as pulse transformers, etc； 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. Magnetic induction strength is the number of magnetic lines passing through a unit cross-sectional area of the iron core, also known as magnetic flux density. It represents the material‘s magnetization ability, measured in T. The magnetic induction strength of electrical steel plates is high, and the excitation current (also known as no-load current) of the iron core is reduced. Copper and iron losses are also reduced, which can save electrical energy. When the power of the motor and transformer remains constant, the magnetic induction intensity is high, and the design Bm can be increased. The cross-sectional area of the iron core can be reduced, which reduces the volume and weight of the iron core, and saves the amount of electrical steel plates, wires, insulation materials, and structural materials used. This can reduce the total loss and manufacturing cost of the motor and transformer, and is beneficial for the manufacturing, installation, and transportation of large transformers and motors. The main requirements for the performance of silicon steel are: 1. Low iron loss is the most important indicator of the quality of silicon steel sheets. Various countries classify grades based on iron loss values, with the lower the iron loss, the higher the grade. 2. Under strong magnetic fields, the magnetic induction intensity (magnetic induction) is high, which reduces the volume and weight of the iron core of the motor and transformer, saving silicon steel sheets, copper wires, and insulation materials. 3. The surface is smooth, flat, and the thickness is uniform, which can improve the filling coefficient of the iron core. 4. Good lamination performance is more important for manufacturing micro and small electric motors. 5. The adhesion and weldability of the surface insulation film are good, which can prevent corrosion and improve the punching performan

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(wú)涂層系列產(chǎn)品表面無(wú)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(wú)油脂，無(wú)銹漬，無(wú)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、云南西雙版納當(dāng)?shù)氐讓尤毕荨⒃颇衔麟p版納當(dāng)?shù)亟^緣涂層缺陷，如輕微劃痕、云南西雙版納當(dāng)?shù)剌佊?、云南西雙版納當(dāng)?shù)厣睢⒃颇衔麟p版納當(dāng)?shù)芈毒?、云南西雙版納當(dāng)?shù)厣摺⒃颇衔麟p版納當(dāng)?shù)匦“c(diǎn)、云南西雙版納當(dāng)?shù)匦馀?、云南西雙版納當(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(shí)不脫落，6.4.4 產(chǎn)品帶焊縫或帶缺陷交貨時(shí)，需插入空白紙。必要時(shí)，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(méi)在液體中使用時(shí)，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。

電工鋼硅鋼片：公稱厚度(mm)的 100 倍。用于表示無(wú)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(duì)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(wú)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(wú)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(wú)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(wú)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(wú)取向電工鋼，小屈服強(qiáng)度 500MPa。5.3 絕緣涂層的分類和代號(hào)絕緣涂層的分類和代號(hào)應(yīng)符合表2的規(guī)定。表 2 絕緣涂層的分類和代號(hào)絕緣涂層種類 代號(hào) 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(wú)鉻薄涂層 K 涂層中不含鉻，具有良好的焊接性半有機(jī)無(wú)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