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:

電工鋼硅鋼片本文件按照 GB/T 1.1—2020《標準化工作導(dǎo)則 部分：標準化文件的結(jié)構(gòu)和起草規(guī)則》的規(guī)定起草。本文件代替 Q/BQB 485－2020。本文件與 Q/BQB 485-2020 相比，主要修改內(nèi)容如下：— 新增了普通型 Q、西藏昌都附近高磁極化強度型 QG、西藏昌都附近磁疇細化型 RK 產(chǎn)品牌號；— 補充配電變壓器專用和耐熱刻痕磁疇細化兩個類型產(chǎn)品；— 補充 B18P070、西藏昌都附近B20P075、西藏昌都附近B23P080、西藏昌都附近B27P085、西藏昌都附近B27P120、西藏昌都附近B30P090 六個高磁極化強度型產(chǎn)品和B18R055、西藏昌都附近B18R060、西藏昌都附近B20R060、西藏昌都附近B20R065、西藏昌都附近B23R070 五個磁疇細化型產(chǎn)品；— 依據(jù) IEC 文件（IEC 6040-8-7 Edition 5.0 2020-09），對單片法（SST）磁性能檢測數(shù)據(jù)轉(zhuǎn)換規(guī)則進行調(diào)整；— 補充無 Cr 環(huán)保涂層產(chǎn)品相關(guān)規(guī)定；— 修改了鋼帶的浪高標準。請注意本文件的某些內(nèi)容可能涉及 。本文件的發(fā)布機構(gòu)不承擔識別 的責任。本文件由寶山鋼鐵股份有限公司硅鋼事業(yè)部和制造管理部提出。本文件由寶山鋼鐵股份有限公司硅鋼事業(yè)部、西藏昌都附近制造管理部和武鋼有限聯(lián)合起草。本文件所代替的歷次版本發(fā)布情況為：Q/BQB 485－2007，Q/BQB 485－2014，Q/BQB 485－2016，Q/BQB485－2018，Q/BQB 485－2020。