電工鋼硅鋼片In addition to the types 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, used for medium and high-frequency motors, transformers, and pulse transformers； 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 [1] [2]. The requirements for the performance of electrical steel plates are as follows:Low core loss (PT)Iron core loss refers to the ineffective electrical energy consumed by an iron core when magnetized in an alternating magnetic field of ≥ 50Hz, abbreviated as iron loss, also known as alternating loss, and its unit is W/kg. The ineffective electrical energy consumed due to various obstacles caused by magnetic flux changes not only loses electrical energy through the heating of the iron core, but also causes temperature rise of the motor and transformer. The iron loss (PT) of electrical steel includes three parts: hysteresis loss, eddy current loss (Pe), and anomalous loss (Pa). Electrical steel plates have low iron loss, which can save a lot of electricity, prolong the operating time of motors and transformers, and simplify cooling devices. Due to the iron loss of electrical steel plates, which accounts for 2.5％ to 4.5％ of the annual electricity generation in various countries, countries always try their best to reduce iron loss in the production of electrical steel plates, and use iron loss as the most important indicator to assess the magnetic properties of products. The iron loss value of products is used as the basis for classifying product grades. Cold rolled oriented electrical steel: Cold rolled oriented electrical steel is a high-end product in the field of electrical steel. Compared with cold rolled non oriented electrical steel, its magnetism has strong directionality； It has superior high magnetic permeability and low loss characteristics in the direction of easy magnetization rolling. The iron loss of oriented steel strip in the rolling direction is only 1/3 of that in the transverse direction, and the ratio of magnetic permeability is 6:1. Application: The main purpose of cold-rolled oriented silicon steel strip is for transformer manufacturing.Full process cold rolled non oriented silicon steel coating: The surface of the full process cold rolled silicon steel is coated with a semi transparent insulation coating, which has different codes in different standards. Taking Baosteel‘s Q/BQB 480 2014 as an example:

電工鋼硅鋼片硅鋼性能指標(biāo)電工鋼疊片鐵芯與銅線通過電磁感應(yīng)做功，鐵芯通過形成交變磁場(chǎng)發(fā)揮作用。鐵芯運(yùn)行過程中自身耗能和鐵芯磁化能力決定電器設(shè)備核心性能，如功率、青海海東體積、青海海東效率、青海海東質(zhì)量以及綜合運(yùn)行成本。所以，電工鋼的性能指標(biāo)要求有下列幾項(xiàng)：1) 鐵芯損耗P：電工鋼鐵芯在勵(lì)磁與退磁過程中額外消耗電能轉(zhuǎn)化成熱量稱為鐵損，單位為W/kg，是劃分產(chǎn)品牌號(hào)的主要依據(jù)。鐵損由磁滯損耗Ph、青海海東渦流損耗Pe和反常損耗Pa組成。三種鐵損分別與晶粒尺寸、青海海東有利織構(gòu)比例和板帶質(zhì)量對(duì)應(yīng)。所以，取向和無取向電工鋼中這三種損耗占比不同，如無取向硅鋼的鐵損以Ph為主，取向硅鋼中則以Pe為主。根據(jù)使用條件不同，無取向硅鋼的鐵損保證值取P1.5/50，即硅鋼片在50Hz交變磁場(chǎng)下磁化到1.5T時(shí)所消耗的電能，而取向硅鋼相應(yīng)的鐵損保證值為P1.7/50。