電工鋼硅鋼片 電工鋼主要分為晶粒取向電工鋼和晶粒無取向電工鋼兩大類。取向電工鋼易磁化晶粒方向沿軋制方向分布，軋制方向具有高磁感、河南周口低鐵損及低磁致伸縮等優(yōu)良特性，同時(shí)還可通過磁疇細(xì)化的技術(shù)處理，獲得更低鐵損的性能，廣泛應(yīng)用于變壓器行業(yè)領(lǐng)域。從2008年5月15日，寶鋼 卷合格取向電工鋼成功下線以來，寶鋼取向電工鋼品種迅速拓展至普通型、河南周口高磁感型和細(xì)化磁疇高磁感型三大類。本手冊綜合介紹了寶鋼取向電工鋼的牌號、河南周口品種、河南周口規(guī)格、河南周口應(yīng)用范圍、河南周口電磁性能、河南周口力學(xué)性能、河南周口尺寸板形公差、河南周口相關(guān)的使用技術(shù)及廣泛的應(yīng)用業(yè)績，使用戶對寶鋼取向電工鋼產(chǎn)品能進(jìn)一步了解，進(jìn)而充分利用寶鋼電工鋼產(chǎn)品特性，生產(chǎn)出更加優(yōu)良的下游產(chǎn)品。

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