50WW800

电工钢硅钢片本文件规定了公称厚度为 0.35mm、陕西商洛本地0.50mm 和 0.65mm 全工艺冷轧无取向电工钢带的术语和定义、陕西商洛本地分类和代号、陕西商洛本地一般要求、陕西商洛本地技术要求、陕西商洛本地检验和试验、陕西商洛本地包装、陕西商洛本地标志及检验文件等要求。本文件适用于宝山钢铁股份有限公司生产的、陕西商洛本地用于磁路结构的、陕西商洛本地以终退火状态交货的全工艺冷轧无取向电工钢带产品(以下简称产品)。2 规范性引用文件下列文件中的内容通过文中的规范性引用而构成本文件必不可少的条款。其中，注日期的引用文件，仅该日期对应的版本适用于本文件；不注日期的引用文件，其 版本（包括所有的修改单）适用于本文件。GB/T 228.1-2010 金属材料 拉伸试验 第 1 部分：室温实验法GB/T 2521.1 全工艺冷轧电工钢 第 1 部分:晶粒无取向钢带(片)GB/T 2522GB/T 2791电工钢片（带）表面绝缘电阻、陕西商洛本地涂层附着性测试方法胶粘剂 T 剥离强度试验方法 挠性材料对挠性材料GB/T 2900.60 电工术语 电磁学GB/T 3655 用爱泼斯坦方圈测量电工钢片(带)磁性能的方法GB/T 4340.1 金属材料 维氏硬度试验 第 1 部分：试验方法GB/T 8170 数值修约规则与极限数值的表示和判定GB/T 9637 电工术语 磁性材料与元件GB/T 17505 钢及钢产品交货一般技术要求GB/T 18253 钢及钢产品检验文件的类型GB/T 19289 电工钢片（带）的密度、陕西商洛本地电阻率和叠装系数的测量方法YB/T 4292 电工钢带（片）几何特性测试方法Q/BQB 400-2020 冷轧产品的包装、陕西商洛本地标志及检验文件IEC60404-8-4 Specifications for individual materials –Cold-rollednongrain-oriented electrical steel strip and sheet deliveredin the fully-processed state

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: