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規(guī)定了公稱厚度為 0.35mm、青海果洛本地0.50mm 和 0.65mm 全工藝?yán)滠垷o取向電工鋼帶的術(shù)語和定義、青海果洛本地分類和代號、青海果洛本地一般要求、青海果洛本地技術(shù)要求、青海果洛本地檢驗(yàn)和試驗(yàn)、青海果洛本地包裝、青海果洛本地標(biāo)志及檢驗(yàn)文件等要求。本文件適用于寶山鋼鐵股份有限公司生產(chǎn)的、青海果洛本地用于磁路結(jié)構(gòu)的、青海果洛本地以終退火狀態(tài)交貨的全工藝?yán)滠垷o取向電工鋼帶產(chǎn)品(以下簡稱產(chǎn)品)。2 規(guī)范性引用文件下列文件中的內(nèi)容通過文中的規(guī)范性引用而構(gòu)成本文件必不可少的條款。其中，注日期的引用文件，僅該日期對應(yīng)的版本適用于本文件；不注日期的引用文件，其 版本（包括所有的修改單）適用于本文件。GB/T 228.1-2010 金屬材料 拉伸試驗(yàn) 第 1 部分：室溫實(shí)驗(yàn)法GB/T 2521.1 全工藝?yán)滠堧姽や?第 1 部分:晶粒無取向鋼帶(片)GB/T 2522GB/T 2791電工鋼片（帶）表面絕緣電阻、青海果洛本地涂層附著性測試方法膠粘劑 T 剝離強(qiáng)度試驗(yàn)方法 撓性材料對撓性材料GB/T 2900.60 電工術(shù)語 電磁學(xué)GB/T 3655 用愛潑斯坦方圈測量電工鋼片(帶)磁性能的方法GB/T 4340.1 金屬材料 維氏硬度試驗(yàn) 第 1 部分：試驗(yàn)方法GB/T 8170 數(shù)值修約規(guī)則與極限數(shù)值的表示和判定GB/T 9637 電工術(shù)語 磁性材料與元件GB/T 17505 鋼及鋼產(chǎn)品交貨一般技術(shù)要求GB/T 18253 鋼及鋼產(chǎn)品檢驗(yàn)文件的類型GB/T 19289 電工鋼片（帶）的密度、青海果洛本地電阻率和疊裝系數(shù)的測量方法YB/T 4292 電工鋼帶（片）幾何特性測試方法Q/BQB 400-2020 冷軋產(chǎn)品的包裝、青海果洛本地標(biāo)志及檢驗(yàn)文件IEC60404-8-4 Specifications for individual materials –Cold-rollednongrain-oriented electrical steel strip and sheet deliveredin the fully-processed state

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、青海果洛體積、青海果洛效率、青海果洛質(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)品牌號的主要依據(jù)。鐵損由磁滯損耗Ph、青海果洛渦流損耗Pe和反常損耗Pa組成。三種鐵損分別與晶粒尺寸、青海果洛有利織構(gòu)比例和板帶質(zhì)量對應(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交變磁場下磁化到1.5T時所消耗的電能，而取向硅鋼相應(yīng)的鐵損保證值為P1.7/50。