電工鋼硅鋼片單取向電工鋼指Goss取向，雙取向特指立方取向電工鋼。后者制備工藝極為復(fù)雜，目前難以工業(yè)化，所以取向硅鋼廣泛意義上指Goss取向。取向硅鋼在易磁化的方向上具有高磁導(dǎo)率與低損耗特性，符合變壓器等靜態(tài)電力裝備的導(dǎo)磁能力要求。單取向硅鋼根據(jù)抑制劑和磁感的不同又可以分為CGO鋼和Hi-B鋼，具體如表1所示。其中，CGO鋼的晶粒平均取向偏離角約為7°，飽和磁感值B8在1.82Tesla以上，主要用于中小型變壓器的制造。Hi-B鋼的晶粒平均取向偏離角約為3°，B8值在1.90Tesla以上，主要用于電力工業(yè)中的各種大型變壓器、遼寧鞍山同城扼流圈等高端電磁元件的制造。

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B27G120表示公稱厚度為0.27mm普通取向電工鋼，鐵損的保證值P17/50不大于1.20W/kg；B30P105表示公稱厚度為0.30mm高磁感取向電工鋼，鐵損的保證值P17/50不大于1.05W/kg；B27R090表示公稱厚度為0.27mm磁疇細化高磁感取向電工鋼，鐵損的保證值P17/50不大于0.90W/kg；電工鋼主要分為晶粒取向電工鋼和晶粒無取向電工鋼兩大類。取向電工鋼易磁化晶粒方向沿軋制方向分布，軋制方向具有高磁感、遼寧鞍山同城低鐵損及低磁致伸縮等優(yōu)良特性，同時還可通過磁疇細化的技術(shù)處理，獲得更低鐵損的性能，廣泛應(yīng)用于變壓器行業(yè)領(lǐng)域。