武钢 DW270-35

电工钢硅钢片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

电工钢硅钢片宝钢新能源汽车驱动电机用无取向电工钢EVI：宝钢为新能源汽车驱动电机用户提供从设计选材到产品量产的技术支持 电机设计选材支持，实现卓越的性能和成本控制； 铁芯用材和结构优化，实现性能或技术降本；铁芯加工制造支持，实现材料与装备 匹配； 新产品、福建泉州当地新技术的应用，新能源汽车的竞争力。新能源汽车驱动电机用无取向电工钢产品体系：永磁同步电机是新能源汽车发展主流趋势，具有率、福建泉州当地高转矩、福建泉州当地高性以及小体积等优点。宝钢产品具有低铁损、福建泉州当地高磁感和高强度的特点，满足各类电机设计和制造需求。普通系列：具有低铁损、福建泉州当地高强度特点； 系列：具有低铁损、福建泉州当地高磁感特点；高强度系列：磁感、福建泉州当地铁损、福建泉州当地强度三者综合性能优异； 高磁感系列：更高的磁感，满足高转矩、福建泉州当地电机小型化的需求； 高强度系列：高强度，应用于高转速或超高转速转子。公称厚度为 0.15mm、福建泉州当地0.20mm、福建泉州当地0.25mm、福建泉州当地0.27mm、福建泉州当地0.30mm 和0.35mm 全工艺冷轧中频无取向电工钢带的术语和定义、福建泉州当地分类和代号、福建泉州当地一般要求、福建泉州技术要求、福建泉州检验和试验、福建泉州包装、福建泉州标志及检验文件等要求。本文件适用于宝山钢铁股份有限公司生产的、福建泉州用于频率在