电工钢硅钢片自粘硅钢片定子手工胶粘方案由于其需要复杂的人工操作及复杂的叠压工装，其生产效率不高，并且生产存在一定的报废率，随着技术的发展，近年来多个钢厂均推出了自粘硅钢片；自粘硅钢片是指硅钢片在冷轧完之后，硅钢片厂家在硅钢片表面涂覆了一层有机的涂层（比如宝钢的Z涂层和Sura Cogent的Suralac 9000），此涂层同时具备C5涂层的绝缘性，又具备胶水的粘性；硅钢片在生产完之后，自粘涂层是不带有粘性的（B 状态），当产品在一定温度和一定压力情况下，自粘涂层会进行融化并形成固化强度将硅钢片粘接到一起，以达到胶粘的效果；对比与普通的硅钢片自粘硅钢片的相关参数如图：

电工钢硅钢片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:

电工钢硅钢片半有机无铬超厚涂层L C6 C-6 EC-6 C-7涂层以有机成分为基础，添加较多的无机填料，以提高涂层绝缘性。涂层通常用于全工艺无取向电工钢，特别是大直径电机，如电站发电机。涂层可以改善钢的冲片性能，适合冲压叠片。涂层具有较高的层间电阻，能承受 300-550℃的涂层烧除处理，可用于重建电机定子时，去除电机定子绕组的绝缘层，也可用于风冷式或油浸式。涂层不能承受正常的应力退火。用户选择该涂层时，应考虑到在焊接过程中或涂层用于高温环境时，涂层会分解放出气体的情况。用户可以和供方协商确定该类涂层的层间电阻范围