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

電工鋼硅鋼片硅鋼按Si質(zhì)量分?jǐn)?shù)分類分為Si＜0.5％的電工鋼和0.5~4.5％Si的硅鋼兩類，兩者通稱為電工鋼板。前者在制造電磁性能要求不高的民用小型電器領(lǐng)域有著廣泛的需求，此類硅鋼片的特點(diǎn)在于硅含量明顯低于常規(guī)電工鋼，制備工藝流程簡單，成本較低，與普碳鋼類似。后者包含的種類、安徽黃山附近牌號極為復(fù)雜。高硅鋼是指4.5％~6.7％Si的Si-Fe合金，具有在高頻下鐵損明顯降低、安徽黃山附近 磁導(dǎo)率高、安徽黃山附近矯頑力低、安徽黃山附近磁性能極為優(yōu)異的特點(diǎn)，主要用來制造高頻電機(jī)、安徽黃山附近高頻變壓器、安徽黃山附近扼流線圈和高頻磁屏蔽等。但由于Si含量過高，室溫條件下塑性極差，無法軋制成形。6.5％Si因?yàn)槠洫?dú)特的磁性能而自成體系，目前僅有少量通過滲硅工藝制備的無取向6.5％Si-Fe合金材料可以成卷供應(yīng)，更具性能優(yōu)勢的取向6.5％Si-Fe合金制備則更為困難。