電工鋼硅鋼片：本文件規定了公稱厚度為 0.15mm、山東淄博0.20mm、山東淄博當地0.25mm、山東淄博當地0.27mm、山東淄博當地0.30mm 和 0.35mm 全工藝冷軋中頻無取向電工鋼帶的術語和定義、山東淄博當地分類和代號、山東淄博當地一般要求、山東淄博當地技術要求、山東淄博當地檢驗和試驗、山東淄博當地包裝、山東淄博當地標志及檢驗文件等要求。本文件適用于寶山鋼鐵股份有限公司生產的、山東淄博當地用于頻率在 100Hz-10000Hz 磁路結構的、山東淄博當地以終退火狀態交貨的全工藝冷軋無取向電工鋼帶產品(以下簡稱產品)。2 規范性引用文件下列文件中的內容通過文中的規范性引用而構成本文件必不可少的條款。其中，注日期的引用文件，僅該日期對應的版本適用于本文件；不注日期的引用文件，其 版本（包括所有的修改單）適用于本文件。GB/T 228.1-2010 金屬材料拉伸試驗 第 1 部分：室溫實驗法GB/T 2521.1 全工藝冷軋電工鋼 第 1 部分:晶粒無取向鋼帶(片)GB/T 2522GB/T 2791電工鋼片（帶）表面絕緣電阻、山東淄博當地涂層附著性測試方法粘結劑 T 剝離強度試驗方法 撓性材料對撓性材料GB/T 2900.60 電工術語 電磁學GB/T 3655 用愛潑斯坦方圈測量電工鋼片(帶)磁性能的方法GB/T 4340.1 金屬材料維氏硬度試驗 第 1 部分：試驗方法GB/T 8170 數值修約規則與極限數值的表示和判定GB/T 9637GB/T 10129電工術語磁性 材料與元件電工鋼片（帶）中頻磁性能測量方法GB/T 17505 鋼及鋼產品交貨一般技術要求GB/T 18253 鋼及鋼產品檢驗文件的類型GB/T 19289 電工鋼片（帶）的密度、山東淄博當地電阻率和疊裝系數的測量方法YB/T 4292 電工鋼帶（片）幾何特性測試方法Q/BQB 400-2020 冷軋產品的包裝、山東淄博當地標志及檢驗文件IEC 60404-8-8 Specifications for individual materials –Thin electricalsteel strip and sheet for use at medium frequencies

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