電工鋼硅鋼片本文件適用于寶山鋼鐵股份有限公司生產(chǎn)的、河南許昌同城用于頻率在 100Hz-10000Hz 磁路結(jié)構(gòu)的、河南許昌同城以終退火狀態(tài)交貨的全工藝?yán)滠垷o(wú)取向電工鋼帶產(chǎn)品(以下簡(jiǎn)稱產(chǎn)品)，比總損耗(鐵損)specific total loss (iron loss)比總損耗是指在磁極化波形保持正弦，其峰值和頻率為特定值時(shí)，單位質(zhì)量材料所消耗的總功率，比總損耗用符號(hào) P(Jm/f)表示，單位為 W/kg。例：P1.0/400表示在 磁極化強(qiáng)度為 1.0T、河南許昌同城頻率為 400Hz 時(shí)的比總損耗。Q/BQB 481－202123.2 磁極化強(qiáng)度 magnetic polarization磁極化強(qiáng)度是指試樣受交變磁化時(shí)，特定磁場(chǎng)強(qiáng)度峰值的磁極化強(qiáng)度峰值，其符號(hào)為J(H)，單位為 T(特斯拉)。例：J5000表示對(duì)應(yīng)于磁場(chǎng)強(qiáng)度峰值為 5000A/m 下的磁極化強(qiáng)度峰值。4 分類本文件的材料的等級(jí)是根據(jù)磁極化強(qiáng)度在1.0T、河南許昌同城頻率在400Hz下的 比總損耗值P1.0/400、河南許昌同城材料公稱厚度進(jìn)行牌號(hào)分類，并按產(chǎn)品特性細(xì)分為普通型、河南許昌同城型、河南許昌同城高強(qiáng)度型、河南許昌同城高磁感型和高強(qiáng)度型五類。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。1 絕緣涂層狀態(tài)產(chǎn)品通常以兩面涂敷絕緣涂層狀態(tài)交貨，涂層種類見(jiàn)表 2。絕緣涂層應(yīng)可耐受絕緣漆、河南許昌同城變壓器油、河南許昌同城機(jī)械油等介質(zhì)的侵蝕。本文件規(guī)定的絕緣涂層與國(guó)內(nèi)外相關(guān)技術(shù)規(guī)范規(guī)定絕緣涂層的近似對(duì)照可參見(jiàn)附錄 A(資料性附錄)，絕緣涂層的特性見(jiàn)附錄 B(資料性附錄)。絕緣涂層的厚度、河南許昌同城自粘接涂層的剝離強(qiáng)度等技術(shù)要求如有特殊要求應(yīng)在訂貨時(shí)協(xié)商，并在合同中注明。涂層絕緣電阻涂層絕緣電阻分為表面絕緣電阻和層間電阻，表面絕緣電阻單位為Ω·cm2/面，層間電阻單位為Ω·cm2/片，理論上，層間電阻是表面絕緣電阻的 2 倍。根據(jù)需方要求，經(jīng)供需雙方協(xié)商，可進(jìn)行涂層絕緣電阻的檢測(cè)，并在合同中注明涂層表面絕緣電阻或?qū)娱g電阻的小值。

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