Jiangyin Centersky Electrical Appliance Co., Ltd

  Electrical steel laminations manufacturers play a crucial role in the global electrical and electronic industries. These specialized companies produce thin sheets of electrical steel, which are essential components in a wide range of electrical devices, including transformers, motors, and generators. The quality of electrical steel laminations directly impacts the efficiency and performance of these devices. High – quality laminations reduce energy losses, improve magnetic properties, and enhance the overall reliability of electrical equipment. As a result, manufacturers in this field are under constant pressure to produce laminations with precise dimensions, excellent magnetic characteristics, and minimal losses. One of the key challenges faced by electrical steel laminations manufacturers is keeping up with the rapidly evolving technological demands of the industry. With the increasing focus on energy efficiency and sustainability, there is a growing ...

  In the realm of electrical engineering, transformers stand as essential components for power distribution and voltage regulation. At the heart of these transformers lies the EI lamination, a fundamental element that plays a pivotal role in ensuring efficient and reliable operation. Structure and Design EI laminations are named for their characteristic “E” and “I” shapes. These thin, flat pieces of magnetic material, typically made of silicon steel, are stacked together to form the core of a transformer. The “E” shaped lamiations have three legs, while the “I” shaped laminations are used to close the magnetic circuit. This design allows for a more efficient magnetic flux path, minimizing energy losses. Working Principle When an alternating current (AC) is applied to the primary winding of a transformer, it creates a magnetic field that alternates in direction. The EI lamination core, with its high magnetic permeability, channels and concentrates this ma...

  In the production process of silicon steel sheets, a core component of electrical equipment, insulation treatment is a crucial step that determines their performance. Proper insulation treatment can effectively reduce eddy current losses, enhancing the efficiency and stability of electrical equipment. Currently, there are several common insulation treatment methods for silicon steel sheets , as described below. Coating insulation paint is the most widely used traditional method. Organic resin – based insulation paints, such as polyester resin and epoxy resin, are commonly preferred due to their excellent film – forming properties, insulation performance, and adhesion. During production, roll coating, spray coating, and dip coating each have their own advantages. Roll coating is suitable for large – scale continuous production, ensuring a stable and uniform coating thickness; spray coating allows for flexible control of the coating coverage, making it ada...

  The application effect of EI transformer lamination technology will be affected by many factors. The following are some of the main aspects: Material properties – Core material: Silicon steel sheet is a commonly used core material, and its magnetic permeability, resistivity and other properties have a significant impact on the performance of the transformer. Silicon steel sheets with high magnetic permeability can make it easier for the magnetic field to pass through the core, reduce magnetic resistance, and improve electromagnetic conversion efficiency; high resistivity can reduce eddy current loss. Although new materials such as amorphous alloys have lower losses, they also have problems such as high processing difficulty and high cost, which affect their wide application. – Insulating materials: Insulating materials are used to isolate laminations, and their performance affects the insulation performance and heat dissipation effect of the transforme...

  Excellent magnetic performance Efficient magnetic flux conduction: The structural design of the EI type core is conducive to the efficient conduction of magnetic flux. The combination of its “E” and “I” shapes constructs a relatively ideal magnetic circuit, which can guide the magnetic flux to pass through in a concentrated and stable manner and reduce magnetic flux leakage. Taking the power transformer as an example, this structure can concentrate most of the magnetic flux inside the core, reduce leakage loss, and improve the overall efficiency of the transformer, generally increasing the energy conversion efficiency to more than 95%. Good magnetic permeability characteristics: EI type cores often use materials with high magnetic permeability such as silicon steel. In power frequency transformers, EI cores made of silicon steel sheets can generate higher magnetic flux density at lower excitation currents. For example, the common oriented silicon steel sh...

Effect on eddy current losses The thickness of silicon steel sheets is closely related to eddy current losses. When the thickness of silicon steel sheets increases, the loop area formed by eddy currents increases, and eddy current losses rise sharply. For example, if the thickness of silicon steel sheets is increased from \(0.3mm\) to \(0.6mm\), the eddy current losses will theoretically become 8 times the original value when other conditions remain unchanged. This will not only cause serious heating of the iron core when the motor is running, but also reduce the energy utilization rate of the motor, resulting in a large amount of electric energy waste. On the contrary, using thinner silicon steel sheets, such as the common \(0.2 – 0.3mm\) thickness, can effectively reduce the eddy current loop area, significantly reduce eddy current losses, and improve the operating efficiency of the motor. Effect on magnetic permeability Thinner silicon steel sheets have advantages in...

In the modern electrical industry, silicon steel sheet is an extremely important soft magnetic material, widely used in various types of electromagnetic equipment such as motors, transformers, reactors, etc., and plays a key role in the efficient operation of the power system. Silicon steel sheet, also known as electrical steel sheet, is a silicon-iron alloy with a silicon content of 0.5%-4.5%. The addition of silicon significantly increases the resistivity of steel and reduces the eddy current loss generated by the iron core in the alternating magnetic field, which is an important characteristic of silicon steel sheet that distinguishes it from ordinary steel. At the same time, silicon steel sheet also has a higher magnetic permeability, which can conduct magnetism more effectively, so that electromagnetic equipment can generate sufficient magnetic flux under a smaller excitation current, greatly improving energy utilization efficiency. From the manufacturing process p...