電工鋼硅鋼片絕緣涂層的分類和代號絕緣涂層的分類和代號應符合表2的規定。表 2 絕緣涂層的分類和代號絕緣涂層種類 代號 特征半有機薄涂層 A 改善沖片性，并有良好的焊接性半有機厚涂層 H 沖片性好，層間電阻高半有機無鉻薄涂層 K 涂層中不含鉻，具有良好的焊接性半有機無鉻厚涂層 M 涂層中不含鉻，具有良好的絕緣性能半有機無鉻極厚涂層 J 涂層中不含鉻，具有極好的絕緣性能半有機無鉻超厚涂層 L 涂層中不含鉻，具有極高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，鐵心固定強度大6 一般要求6.1 生產工藝產品的生產工藝和化學成分由制造方決定。6.2 供貨形式6.2.1 產品以卷供貨，簡稱鋼卷。鋼卷的重量應符合訂貨要求，卷重一般3～10 噸，特殊卷重應在訂貨時協商并在合同中注明。6.2.2 鋼卷通常以切邊狀態交貨。用戶有特殊要求時，應在訂貨時協商并在合同中注明。6.2.3 鋼卷內徑應在 500mm～520mm 范圍內，鋼卷內徑為 508mm。6.2.4 鋼卷應由同一寬度的鋼帶連續、江蘇鎮江緊密卷繞，卷的側面應盡量平直，自重下不塌卷。6.3 交貨狀態鋼帶以終退火并兩面涂敷絕緣涂層的狀態交貨。

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

電工鋼硅鋼片電工鋼板的磁感應強度高，鐵芯的激磁電流（也稱空載電流）降低，銅損和鐵損都下降，可節省電能。當電機和變壓器功率不變時，磁感應強度高，設計Bm可提高，鐵芯截面積可縮小，這使鐵芯體積減小和重量減輕，并節省電工鋼板、江蘇鎮江導線、江蘇鎮江絕緣材料和結構材料用量，可降低電機和變壓器的總損耗和制造成本，并且有利于大變壓器和大電機的制造、江蘇鎮江安裝和運輸。硅鋼性能的要求主要是：1、江蘇鎮江鐵損低，這是硅鋼片質量的重要指標。各國都根據鐵損值劃分牌號，鐵損愈低，牌號愈高。2、江蘇鎮江較強磁場下磁感應強度（磁感）高，這使電機和變壓器的鐵芯體積與重量減小，節約硅鋼片、江蘇鎮江銅線和絕緣材料等。3、江蘇鎮江表面光滑、江蘇鎮江平整和厚度均勻，可以提高鐵芯的填充系數。4、江蘇鎮江沖片性好，對制造微型、江蘇鎮江小型電動機更為重要。5、江蘇鎮江表面絕緣膜的附著性和焊接性良好，能防蝕和改善沖片性