電工鋼硅鋼片：密度用于計算磁性能和疊裝系數的約定密度為 7.65×103 kg/m3。7.4.2 疊裝系數產品的小疊裝系數應符合表 3、遼寧盤錦同城表 4、遼寧盤錦同城表 5、遼寧盤錦同城表 6、遼寧盤錦同城表 7、遼寧盤錦同城表 8 和表 9 的規定。7.4.3 彎曲次數產品平行于軋制方向的小彎曲次數應不小于 1 次。供方如能保證，可不進行該試驗。7.4.4 由內應力引起的剪切邊的偏差產品應盡可能量避免出現內應力。根據需方要求，并在合同中注明，可對寬度不小于 500mm 的材料（縱切分條后的材料）檢測由內應力引起的剪切邊偏差，其縫隙測量值應不超過 1mm。供方如能保證，可不進行該試驗。8 檢驗和試驗8.1 一般要求8.1.1 按本文件簽訂訂貨協議時，用戶可按GB/T 17505規定進行規定檢驗和試驗或非規定檢驗和試驗。然而，對于非規定檢驗和試驗，制造方應提供所需產品的比總損耗值和磁極化強度值。8.1.2 當按規定檢驗和試驗訂貨時，用戶應明確 GB/T 18253 中的檢驗文件的類型。

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:

電工鋼硅鋼片一般要求電機、遼寧盤錦當地變壓器和其他電器部件效率高，耗電量少，體積小和重量輕。電工鋼板通常是以鐵芯損耗和磁感應強度作為產品磁性保證值磁感應強度是鐵芯單位截面積上通過的磁力線數，也稱磁通密度，它代表材料的磁化能力，單位為T。電工鋼板的磁感應強度高，鐵芯的激磁電流（也稱空載電流）降低，銅損和鐵損都下降，可節省電能。當電機和變壓器功率不變時，磁感應強度高，設計Bm可提高，鐵芯截面積可縮小，這使鐵芯體積減小和重量減輕，并節省電工鋼板、遼寧盤錦當地導線、遼寧盤錦同城絕緣材料和結構材料用量，可降低電機和變壓器的總損耗和制造成本，并且有利于大變壓器和大電機的制造、遼寧盤錦同城安裝和運輸。