武钢 23RK095 0.23*980*C 中大型变压器铁芯用硅钢

电工钢硅钢片电工钢钢板经冲片、同城剪切、附近弯曲会引入残余应力，导致磁性能劣化。应力退火（SRA）可以残余应力对磁畴移动与转动的阻碍作用，恢复电磁性能。E.2 在钢板或铁心叠片的状态下进行应力退火的注意事项如下。1)、附近避免氧化和渗碳为了防止氧化应力退火应该在保护气氛下进行，通常是 10％以下氢气（H2）和 90％以上氮气（N2）、附近100％氮气（N2）或者氨分解气氛的非爆炸性保护气氛，露点控制在 0℃以下。冲压加工过程引入的冲压油在退火前应完全去除，防止在退火中发生渗碳，劣化产品磁性。2)、附近退火温度及保持时间退火温度指材料温度，750℃为宜。为使得钢板或铁心叠片各部分退火均匀，需要调整温度与保持时间。温度太低不足以残余应力的影响，温度太高会破坏涂层绝缘性。3)、附近冷却时间应当避免急剧冷却使材料产生应力应变。冷却时间根据电工钢退火数量进行调整。对于退火小吨位数量时，可按每小时不超过 25℃ 的冷却速度冷却到 350℃,以避免冷却过程中产生应力应变。对于退火大吨位数量时，应采取更加缓慢的冷却速率，以期获得 效果。

电工钢硅钢片Intro of iron core of automobile driving motor。At present, the motor technology of high-speed punching of stator and rotor iron core at home and abroad has developed rapidly. With the development of stamping equipment, new equipment with high quality, high efficiency and high precision has been provided for the production of motor punching pieces of high-speed punching of stator and rotor iron core at home and abroad, which has brought the motor punching process technology. Therefore, the design technology of new technology and equipment suitable for it has become a new research topic. The simultaneous separation of stator punching groove and stator punching groove of motor high-speed punching stator rotor iron core the simultaneous cutting of air gap between rotor punching and rotor punching groove is a new technological scheme applied to high-speed punching machine. This scheme has been widely used in foreign countries and has just begun research and application in domestic motor industry. Therefore, some discussions are made to realize the design technology of this technology according to the required technological equipment.The influence of motor high-speed punching of stator and rotor iron core: the influence of motor punching process technology of motor high-speed punching of stator and rotor iron core in new product development the traditional process of motor punching in our country is two categories: double punching and single punching, which are analyzed as follows:1) the process scheme of double punching groove: this scheme has good groove shape and uniformity, few processes and few tooling, but the tooling is complex and requires high precision, good equipment conditions, long tooling manufacturing cycle and Cheng Bengao, which is only suitable for mass production and is not conducive to new product development and small batch trial production.2) single-type punching process scheme: this scheme has poor groove shape, many processes, many tooling, many equipments, simple tooling, unstable quality, long production cycle and Cheng Bengao, and is only suitable for medium and small batch production.Requirements for high-speed punching of stator and rotor iron core of motor: 1. Positioning accuracy requirements. In this technological scheme, the two composite processes of punching groove separation and punching groove cutting air gap require the same positioning Benchmark, ensuring that the concentricity of the groove shape of the stator and rotor, the outer circular dove tail groove and shaft hole is not more than 0.02mm, the positioning of the center hole meets the technical requirements of concentricity, and the joint positioning of the small side hole and the center hole meets the requirements of circumferential orientation. 2. Precision requirements of composite process. Punching and groove separation compound process: This process has Groove-shaped convex mold and incision convex mold to complete the progressive blanking process. This process first punches and then cuts to separate the fixed and rotor punching pieces. The Two convex molds act synchronously on the same center track, and the central included angle between the two convex molds is one and a half times the central included angle of the groove. This process equipment is applied to high-speed punching machines, the groove-shaped indexing accuracy is guaranteed by the CAM stepping mechanism on the equipment；Electric vehicle is an economical and clean green vehicle based on electric drive,Environment and other aspects have ＊ competitiveness, and can conveniently use modern control technology to realize its electromechanical integration, with broad development prospects.The motor drive system of the iron core of the automobile drive motor is the power source of the electric vehicle, and is the main body and internal basis for determining various performance indexes of the automobile operation. At present, electric vehicle motors mainly include DC motors, induction motors, permanent magnet brushless motors and switched reluctance motors.Automobile drive motor iron core permanent magnet brushless motor can be divided into two categories: one is permanent magnet synchronous motor with sine wave current,The other is the BLDC motor with rectangular pulse wave current.Two kinds of motors, the rotor is magnet, the motor rotor does not need brush and excitation winding, through stator winding commutation to generate rotating torque. Because the rotor has no excitation winding, no copper consumption, small magnetic flux and very small iron consumption at low load, therefore, the permanent magnet brushless motor has a high "Power/mass" ratio and can run at high speed. At the same time, it is easy to cool down because there is no abrasion of the rotor and the stator winding is the main heat source.The characteristics of the iron core of the automobile driving motor； The permanent magnet brushless motor of the iron core of the automobile driving motor has high reliability and high output power. Compared with other motors with the same rotating speed, it has the characteristics of small volume, light weight, easy maintenance, high efficiency, high power factor, etc. The rotor has small electromagnetic time constant and good dynamic characteristics of the motor. Through adjustment and conduction angle, constant power operation can be realized, and the efficiency of the motor can also be optimized by optimizing control angle, thus obtaining wider constant power operation area and higher efficiency.Overview of motor high speed punching stator and rotor iron core

电工钢硅钢片硅钢性能指标电工钢叠片铁芯与铜线通过电磁感应做功，铁芯通过形成交变磁场发挥作用。铁芯运行过程中自身耗能和铁芯磁化能力决定电器设备核心性能，如功率、体积、效率、质量以及综合运行成本。所以，电工钢的性能指标要求有下列几项：1) 铁芯损耗P：电工钢铁芯在励磁与退磁过程中额外消耗电能转化成热量称为铁损，单位为W/kg，是划分产品牌号的主要依据。铁损由磁滞损耗Ph、涡流损耗Pe和反常损耗Pa组成。三种铁损分别与晶粒尺寸、有利织构比例和板带质量对应。所以，取向和无取向电工钢中这三种损耗占比不同，如无取向硅钢的铁损以Ph为主，取向硅钢中则以Pe为主。根据使用条件不同，无取向硅钢的铁损保证值取P1.5/50，即硅钢片在50Hz交变磁场下磁化到1.5T时所消耗的电能，而取向硅钢相应的铁损保证值为P1.7/50。