DW620-50厂家供应

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

电工钢硅钢片涂层为铬酸盐为主的无机成分混合物，添加有少量有机成分，以提高钢带的冲片性能。涂层具有一定的层间电阻，在中性气氛或弱还原性炉子气氛中，可承受的应力退火温度一般可达800℃，在退火时，层间电阻会有一些降低。涂层能承受 300-550℃的涂层烧除处理，可用于重建电机定子时，去除电机定子绕组的绝缘层，也可用于风冷式或油浸式。涂层基本情况和 A 涂层类似，膜厚增加，绝缘性更好，耐蚀性更好，冲片性也更好，焊接性略差。

电工钢硅钢片硅钢性能指标电工钢叠片铁芯与铜线通过电磁感应做功，铁芯通过形成交变磁场发挥作用。铁芯运行过程中自身耗能和铁芯磁化能力决定电器设备核心性能，如功率、广东揭阳体积、广东揭阳效率、广东揭阳质量以及综合运行成本。所以，电工钢的性能指标要求有下列几项：1) 铁芯损耗P：电工钢铁芯在励磁与退磁过程中额外消耗电能转化成热量称为铁损，单位为W/kg，是划分产品牌号的主要依据。铁损由磁滞损耗Ph、广东揭阳涡流损耗Pe和反常损耗Pa组成。三种铁损分别与晶粒尺寸、广东揭阳本地有利织构比例和板带质量对应。所以，取向和无取向电工钢中这三种损耗占比不同，如无取向硅钢的铁损以Ph为主，取向硅钢中则以Pe为主。根据使用条件不同，无取向硅钢的铁损保证值取P1.5/50，即硅钢片在50Hz交变磁场下磁化到1.5T时所消耗的电能，而取向硅钢相应的铁损保证值为P1.7/50。