M250-50A5宝钢现货

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：同一产品在磁极化强度 1.5T、山东济南同城频率 50Hz 或 60Hz 条件下，按 GB/T 13789 单片法所测得的比总损耗值，参照 GB/T 13789-2008 附录 C 中指定的关系式 C.2a 向方圈法数据转换，两种检测方法所得比总损耗转换因子δP 的拟合关系可参照 GB/T 13789-2008 附录 C 关系式 C.3a，式中拟合有效区间为1.0T～1.8T，且该转换关系只适用于 0.23mm 及以上厚度规格激光刻痕产品，0.20mm 及以下厚度规格激光刻痕产品的转换关系根据实际检测、山东济南同城应用对比实验结果进行专项规定。当供应商和用户协商对 P1.5/50 和 P1.5/60有明确要求时，转换后的 P1.5/50和 P1.5/60应符合表 3、山东济南同城表 4、山东济南同城表 5、山东济南同城表 6、山东济南同城表 7、山东济南同城表 8 和表 9 的规定。7.1.7 其他测试条件下，转换系数 Fc 可由供应商和用户协商确定。7.1.8 当需要提供磁化曲线时，按 GB/T 13789 单片法所测得数据参照 GB/T 13789-2008 附录 C 关系式转换。注1：多年来习惯上采用磁感应强度，实际上爱泼斯坦方圈和单片测试仪测量的是磁极化强度。 磁感应强度与磁极化强度的关系：J＝B-μ0H ，H＝800A/m条件下，B和J的差异约为0.001T