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. Since it is a functional material, its performance testing also revolves around "function". These indicators are often mentioned in trade and processing processes, and a brief understanding can help everyone better carry out their work. The performance testing of electrical steel mainly includes the following aspects: magnetic inspection, stacking coefficient inspection, coating adhesion inspection, repeated bending inspection, size and shape surface inspection, and conventional mechanical property inspection. In addition to the types of products listed above, there are also some special purpose electrical steel plates, such as 0.15 and 0.20mm thick 3％ Si cold-rolled non oriented silicon steel strips and 0.025, 0.05, and 0.1mm thick 3％ Si cold-rolled oriented silicon steel strips, which are used as intermediate and intermediate grade High frequency motors and transformers, as well as pulse transformers, etc； 0.7mm thick 3％ Si high-strength cold-rolled non oriented silicon steel plate for relays and power switches； High strength cold-rolled electrical steel plate for new high-speed motor rotors； Low carbon electrical steel hot-rolled thick and cold-rolled plates for magnetic shielding and high-energy accelerator electromagnets such as medical magnetic resonance tomography scanners； 4.5％ to 6.5％ Si high silicon steel plates for high-frequency motors, transformers, and magnetic shielding. Generally, motors, transformers, and other electrical components are required to have high efficiency, low power consumption, small size, and light weight. Electrical steel plates are usually guaranteed to have magnetic properties based on core loss and magnetic induction strength. Magnetic induction strength is the number of magnetic lines passing through a unit cross-sectional area of the iron core, also known as magnetic flux density. It represents the material‘s magnetization ability, measured in T. The magnetic induction strength of electrical steel plates is high, and the excitation current (also known as no-load current) of the iron core is reduced. Copper and iron losses are also reduced, which can save electrical energy. When the power of the motor and transformer remains constant, the magnetic induction intensity is high, and the design Bm can be increased. The cross-sectional area of the iron core can be reduced, which reduces the volume and weight of the iron core, and saves the amount of electrical steel plates, wires, insulation materials, and structural materials used. This can reduce the total loss and manufacturing cost of the motor and transformer, and is beneficial for the manufacturing, installation, and transportation of large transformers and motors. The main requirements for the performance of silicon steel are: 1. Low iron loss is the most important indicator of the quality of silicon steel sheets. Various countries classify grades based on iron loss values, with the lower the iron loss, the higher the grade. 2. Under strong magnetic fields, the magnetic induction intensity (magnetic induction) is high, which reduces the volume and weight of the iron core of the motor and transformer, saving silicon steel sheets, copper wires, and insulation materials. 3. The surface is smooth, flat, and the thickness is uniform, which can improve the filling coefficient of the iron core. 4. Good lamination performance is more important for manufacturing micro and small electric motors. 5. The adhesion and weldability of the surface insulation film are good, which can prevent corrosion and improve the punching performan

電工鋼硅鋼片應(yīng)力退火電工鋼在剪切、河北廊坊同城沖片和彎曲加工等機(jī)械變形作用下，電磁性能將發(fā)生劣化。為此進(jìn)行應(yīng)力退火，可以使電工鋼的電磁性能恢復(fù)至原來水平。應(yīng)力退火的條件和工藝將根據(jù)加工程度、河北廊坊同城退火爐況等有明顯不同，用戶務(wù)必注意如下幾點(diǎn)：(1) 加熱與冷卻速度電磁性能一般不受加熱和冷卻速度的影響，但用戶需確保材料不變形。(2)退火溫度與保溫時(shí)間取向電工鋼退火溫度在780-820℃之間較為適宜，為確保退火效果，退火材料應(yīng)均熱的保持，保溫時(shí)間應(yīng)根據(jù)鐵芯形狀、河北廊坊同城裝爐量等進(jìn)行調(diào)整。(3)防止?jié)B碳與氧化由于滲碳及氧化會使電磁性能劣化，用戶應(yīng)充分注意爐內(nèi)氣體，并確保爐內(nèi)氣體的露點(diǎn)在較低狀態(tài)。另外，為防止在退火中發(fā)生滲碳，應(yīng)該在退火前，將鐵芯加工過程中潤滑油脂等有機(jī)化合物干凈。同時(shí)，為確保退火效果，建議與爐內(nèi)高溫接觸部分盡量采用低碳含量材料。有害物質(zhì)限定承諾 寶鋼的取向電工鋼產(chǎn)品符合RoHS、河北廊坊同城REACH有害物質(zhì)限定要求。