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. Specific total loss (iron loss) is the total power consumed per unit mass of material when the magnetic polarization waveform remains sinusoidal, with a specific peak and frequency. The specific total loss is represented by the symbol P (Jm/f), in W/kg. Example: P1.5/50 represents the specific total loss at a maximum magnetic polarization intensity of 1.5T and a frequency of 50Hz. 3.2 Magnetic Polarization Q/BQB 480-20212 Magnetic polarization intensity refers to the peak magnetic polarization intensity of a specific magnetic field intensity when a sample is subjected to alternating magnetization. Its symbol is J (H), and the unit is T (Tesla). Example: J5000 represents the peak magnetic polarization intensity corresponding to a magnetic field intensity peak of 5000A/m. The material grades in this document are classified based on the nominal maximum specific total loss P1.5/50 (W/kg) at a magnetic polarization strength of 1.5T and a frequency of 50Hz, as well as the nominal thickness of the material. They are further divided into three categories based on product characteristics: ordinary type, stress relief annealing type, and high-efficiency type. Example 1: B35A210 represents a common non oriented electrical steel with a nominal thickness of 0.35mm, and the maximum nominal specific total loss value P1.5/50 is 2.10W/kg； Example 2: B35AR300 represents a stress relieved annealed non oriented electrical steel with a nominal thickness of 0.35mm, and the maximum nominal specific total loss value P1.5/50 is 3.00W/kg； Example 3: B35AH230 represents an efficient non oriented electrical steel with a nominal thickness of 0.35mm, and the maximum nominal specific loss value P1.5/50 is 2.30W/kg. Example 4: 35WW210 represents a normal type WW non oriented electrical steel with a nominal thickness of 0.35mm, and the maximum nominal specific loss value P1.5/50 is 2.10W/kg. Example 5: 35WH230 represents an efficient WH non oriented electrical steel with a nominal thickness of 0.35mm, and the maximum nominal specific loss value P1.5/50 is 2.30W/kg. The classification and code of insulation coatings shall comply with the provisions of Table 2. Table 2 Classification and Code of Insulation Coatings Type Code Characteristics of Insulation Coatings Semi organic Thin Coating A Improves Punching Performance and Has Good Weldability Semi organic Thick Coating H has Good Punching Performance and High Interlayer Resistance Semi organic Chromium Free Thin Coating K does not contain chromium and has good weldability Semi organic Chromium Free Thick Coating M does not contain chromium and has good insulation performance Semi organic Chromium Free Extreme Thick Coating J does not contain chromium and has excellent insulation performance Semi organic Chromium Free Ultra Thick Coating L does not contain chromium and has extremely high insulation performance Self adhesive Coating

電工鋼硅鋼片，是電力、陜西咸陽電子和軍事工業(yè)不可缺少的金屬材料，亦是產(chǎn)量 的功能性材料，主要用作各種電機(jī)、陜西咸陽發(fā)電機(jī)和變壓器的鐵芯。比總損耗(鐵損) specific total loss (iron loss)比總損耗是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：P1.5/50表示在 磁極化強(qiáng)度為 1.5T、陜西咸陽頻率為 50Hz 時(shí)的比總損耗。3.2 磁極化強(qiáng)度 magnetic polarizationQ/BQB 480－20212磁極化強(qiáng)度是指試樣受交變磁化時(shí)，特定磁場強(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表示對應(yīng)于磁場強(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1.5T、陜西咸陽頻率在50Hz下的 比總損耗名義值P1.5/50(W/kg)、陜西咸陽材料公稱厚度進(jìn)行牌號(hào)分類