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:

電工鋼硅鋼片電工鋼鋼板經(jīng)沖片、遼寧營口同城剪切、遼寧營口附近彎曲會引入殘余應(yīng)力，導(dǎo)致磁性能劣化。應(yīng)力退火（SRA）可以殘余應(yīng)力對磁疇移動與轉(zhuǎn)動的阻礙作用，恢復(fù)電磁性能。E.2 在鋼板或鐵心疊片的狀態(tài)下進(jìn)行應(yīng)力退火的注意事項(xiàng)如下。1)、遼寧營口附近避免氧化和滲碳為了防止氧化應(yīng)力退火應(yīng)該在保護(hù)氣氛下進(jìn)行，通常是 10％以下氫氣（H2）和 90％以上氮?dú)猓∟2）、遼寧營口附近100％氮?dú)猓∟2）或者氨分解氣氛的非爆炸性保護(hù)氣氛，露點(diǎn)控制在 0℃以下。沖壓加工過程引入的沖壓油在退火前應(yīng)完全去除，防止在退火中發(fā)生滲碳，劣化產(chǎn)品磁性。2)、遼寧營口附近退火溫度及保持時(shí)間退火溫度指材料溫度，750℃為宜。為使得鋼板或鐵心疊片各部分退火均勻，需要調(diào)整溫度與保持時(shí)間。溫度太低不足以殘余應(yīng)力的影響，溫度太高會破壞涂層絕緣性。3)、遼寧營口附近冷卻時(shí)間應(yīng)當(dāng)避免急劇冷卻使材料產(chǎn)生應(yīng)力應(yīng)變。冷卻時(shí)間根據(jù)電工鋼退火數(shù)量進(jìn)行調(diào)整。對于退火小噸位數(shù)量時(shí)，可按每小時(shí)不超過 25℃ 的冷卻速度冷卻到 350℃,以避免冷卻過程中產(chǎn)生應(yīng)力應(yīng)變。對于退火大噸位數(shù)量時(shí)，應(yīng)采取更加緩慢的冷卻速率，以期獲得 效果。

電工鋼硅鋼片硅鋼是一種硅鐵合金。用硅鋼軋制的片材是電工領(lǐng)域中應(yīng)用廣的軟磁材料，因而硅鋼片又稱電工鋼片。硅鋼片廣泛用于電動機(jī)、發(fā)電機(jī)、變壓器、扼流圈、電磁機(jī)構(gòu)、繼電器及測量儀表中電機(jī)工業(yè)大量使用厚度為0.35～0.50mm的硅鋼片,用于：中型旋轉(zhuǎn)機(jī)，壓縮電機(jī)，通用馬達(dá)，小型精密電機(jī)，電動汽車，壓縮機(jī)，通用電機(jī)，電源變壓器，精密變壓器，節(jié)能電機(jī)，焊機(jī)變壓器，穩(wěn)壓器，磁性密封器，加速器用電磁鐵，汽車電機(jī)等；在電信高頻技術(shù)中常用0.05~0.20mm的薄帶鋼片,以便更有效地降低渦流損耗。熱軋硅鋼片厚度為0.35～0.50mm，密度為7.55～7.70g/cm3,多用于大、中、小型交、直流電動機(jī)；冷軋無取向硅鋼片厚度為0.35～0.50mm，密度為7.65～7.75g/cm3，多用于大型交流發(fā)電機(jī)、電動機(jī)，大、中、小型交、直流電動機(jī)；冷軋取向硅鋼片厚度為0.23mm 0.27mm 0.3mm 0.35mm，密度為7.65g/cm3,多用于電力變壓器、油浸式變壓器，干式變壓器，電抗器、磁放大器等；冷軋取向薄帶厚度為0.05～0.20mm，多用于無線電高頻變壓器。