電工鋼硅鋼片：比總損耗(鐵損)specific total loss (iron loss)比總損耗是指磁極化強(qiáng)度按正弦變化，其峰值和頻率為特定值時(shí)，單位質(zhì)量材料所吸收的總功率，比總損耗用符號(hào) P (Jm/f)表示，單位為 W/kg（或 W/lb）。例：P1.7/50表示在磁極化強(qiáng)度在 1.7T、吉林延邊當(dāng)?shù)仡l率在 50Hz 下測(cè)得的單位 kg（或 lb）試樣的比總損耗；P1.7/60表示在磁極化強(qiáng)度在 1.7T、吉林延邊當(dāng)?shù)仡l率在 60Hz 下測(cè)得的單位 kg（或 lb）試樣的比總損耗。3.2 磁極化強(qiáng)度(磁感應(yīng)強(qiáng)度)magnetic polarization (magnetic induction)磁極化強(qiáng)度是指試樣受交變磁場(chǎng)磁化時(shí)，特定磁場(chǎng)強(qiáng)度峰值的磁極化強(qiáng)度峰值，其符號(hào)為 J(H)，單位為 T(特斯拉)。例：J800表示對(duì)應(yīng)于磁場(chǎng)強(qiáng)度 H 為 800A/m（用峰值表示）下的磁極化強(qiáng)度。3.3 比視在功率 specific apparent power對(duì)于設(shè)定的磁極化強(qiáng)度和頻率值，磁化單位質(zhì)量的鐵芯所消耗的交流電源總功率為比視在功率，其符號(hào)為 Ss，單位為 VA/kg。例：Ss1.7/50表示磁極化強(qiáng)度在 1.7T、吉林延邊當(dāng)?shù)仡l率在 50Hz 下測(cè)得的單位 kg 試樣的比視在功率。3.4 A 計(jì)權(quán)磁致伸縮速度水平 A-weighted magnetostriction velocity level,LVA 當(dāng)磁極化強(qiáng)度隨時(shí)間按正弦規(guī)律變化，其峰值為某一標(biāo)定值，變化頻率為某一標(biāo)定頻率時(shí)，單位長(zhǎng)度電工鋼片（帶）沿磁化方向上發(fā)生磁致伸縮所引起的表面振動(dòng)聲壓水平為 A 計(jì)權(quán)磁致伸縮速度水平。

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

電工鋼硅鋼片電工鋼板的磁感應(yīng)強(qiáng)度高，鐵芯的激磁電流（也稱(chēng)空載電流）降低，銅損和鐵損都下降，可節(jié)省電能。當(dāng)電機(jī)和變壓器功率不變時(shí)，磁感應(yīng)強(qiáng)度高，設(shè)計(jì)Bm可提高，鐵芯截面積可縮小，這使鐵芯體積減小和重量減輕，并節(jié)省電工鋼板、吉林延邊導(dǎo)線(xiàn)、吉林延邊絕緣材料和結(jié)構(gòu)材料用量，可降低電機(jī)和變壓器的總損耗和制造成本，并且有利于大變壓器和大電機(jī)的制造、吉林延邊安裝和運(yùn)輸。硅鋼性能的要求主要是：1、吉林延邊鐵損低，這是硅鋼片質(zhì)量的重要指標(biāo)。各國(guó)都根據(jù)鐵損值劃分牌號(hào)，鐵損愈低，牌號(hào)愈高。2、吉林延邊較強(qiáng)磁場(chǎng)下磁感應(yīng)強(qiáng)度（磁感）高，這使電機(jī)和變壓器的鐵芯體積與重量減小，節(jié)約硅鋼片、吉林延邊銅線(xiàn)和絕緣材料等。3、吉林延邊表面光滑、吉林延邊平整和厚度均勻，可以提高鐵芯的填充系數(shù)。4、吉林延邊沖片性好，對(duì)制造微型、吉林延邊小型電動(dòng)機(jī)更為重要。5、吉林延邊表面絕緣膜的附著性和焊接性良好，能防蝕和改善沖片性