電工鋼硅鋼片：交貨狀態(tài)產(chǎn)品以終退火狀態(tài)交貨，帶涂層的產(chǎn)品兩面涂敷絕緣涂層，無涂層系列產(chǎn)品表面無底層和絕緣涂層。絕緣涂層的種類由供方根據(jù)自身生產(chǎn)工藝確定，也可由供需雙方協(xié)商確定。6.4 表面條件6.4.1 產(chǎn)品表面應(yīng)光滑清潔，無油脂，無銹漬，無影響使用的缺陷。6.4.2 產(chǎn)品表面允許存在不影響材料正常使用的基板缺陷、湖北十堰當(dāng)?shù)氐讓尤毕?、湖北十堰?dāng)?shù)亟^緣涂層缺陷，如輕微劃痕、湖北十堰當(dāng)?shù)剌佊　⒑笔弋?dāng)?shù)厣?、湖北十堰?dāng)?shù)芈毒?、湖北十堰?dāng)?shù)厣?、湖北十堰?dāng)?shù)匦“c、湖北十堰當(dāng)?shù)匦馀?、湖北十堰?dāng)?shù)亓鸭y等缺陷。6.4.3 產(chǎn)品表面的絕緣涂層應(yīng)附著良好，涂層顏色應(yīng)均勻，以保證在合理剪切操作中和在制造方的應(yīng)力退火條件下退火時不脫落，6.4.4 產(chǎn)品帶焊縫或帶缺陷交貨時，需插入空白紙。必要時，相關(guān)空白紙的標(biāo)記形式應(yīng)由供需雙方協(xié)商并在合同中注明。注：如果在協(xié)議中規(guī)定產(chǎn)品浸沒在液體中使用時，需確保液體和涂層之間的兼容性。6.5 剪切適應(yīng)性產(chǎn)品應(yīng)便于用適當(dāng)剪切工具在任何位置準(zhǔn)確地剪切成通常形狀。

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