How to choose the shielding alloy + raw materials of the transformer shielding cover according to the national standard original factory

For the transformer shield, for the shield, the type of material selected has a great influence on its performance and cost. When designing a shield, it is important to have a deep understanding of the characteristics of different shielding alloys commonly used. The understanding of these different properties will enable you to choose the right material to meet the target requirements. The following Xiaoshuo takes everyone to understand: Magnetic shielding materials should be selected according to their own characteristics, especially magnetic permeability and magnetic saturation performance. Due to the effectiveness of changing the direction of the low-frequency magnetic field, high-permeability materials (such as 80% nickel alloy Mumetal, which is a high-permeability iron-nickel alloy) are often used as shielding materials. These alloys can meet the requirements of MIL-N-14411C Part 1 and ASTMA753-97 Style 4. The relatively thin thickness available is 0.002 to 0.125 inches, and it can be easily processed by experienced shield processors. These alloys are typically used when it is necessary to reduce the magnetic field in a very small space. These materials are often selected when it is necessary to provide higher shielding than required, or when the magnetic field strength (more typical at higher field strengths) requires materials with higher saturation values. When the shielding target only needs to reduce the field strength slightly (reduction by 1 to 1/4), or when the field strength is sufficient to saturate the high permeability shield, low carbon steel (ULCS) may be the better choice. The carbon content of these lower cost materials is typically less than 0.01%; compared with other steels, they have higher magnetic permeability and excellent saturation performance. These materials have less flexibility and are easier to manufacture than silicon steel, which allows easy installation and processing of small components in large-area shielding projects. ULCS can be used with high permeability materials to build better shields for high saturation protection and high attenuation levels. Hardware, 15 years of focus on transformer shielding, 20,000+ sets of customized stamping die production experience, monthly processing of 100+ sets of molds, hundreds of precision processing production equipment, daily production capacity of 3 million punches, and silk-like stamping accuracy up to 0.01 mm, the raw materials are imported and the original national standard factory, and 16 quality inspections are strictly controlled.