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Composition of smc soft magnetic composite

1. According to the powder metallurgy business network, smc soft magnetic composite materials include high-purity iron powder and low-carbon steel. Soft magnetic composites are magnetic composites prepared by making soft magnetic metals through powdering, insulating treatment, bonding, pressing and heat treatment. They are widely used in important fields such as energy, information, transportation and national defense. They are key to national economy and national defense construction. basic materials.

2. The main components of smc soft magnetic composites are high-purity iron powder and low-carbon steel. High-purity iron powder: As the main magnetic component of soft magnetic composites, it provides high magnetic permeability and low coercive force, making the material easy to magnetize and demagnetize. Low-carbon steel: Adding low-carbon steel can enhance the mechanical properties of the material, improve the strength and toughness of the material, and also help adjust and optimize its magnetic properties.

3. High-purity iron powder and low-carbon steel. According to the powder metallurgy business network, smc soft magnetic composite materials consist of high-purity iron powder and low-carbon steel. Soft magnetic composites are magnetic composites prepared by making soft magnetic metals through powdering, insulating treatment, bonding, pressing and heat treatment. They are widely used in important fields such as energy, information, transportation and national defense. They are key to national economy and national defense construction. basic materials.

4. Soft magnetic composites are special materials with low magnetism and high magnetic permeability, and are widely used in home appliances, electronic equipment and other fields. Its main characteristics and related information are as follows: Characteristics: Soft magnetic composites have its main characteristics of low magnetism and high magnetic permeability, which makes them excellent performance in electromagnetic equipment. Application field: Home appliances: Soft magnetic composite materials are widely used in the field of home appliances, such as key components such as solenoid valves and motors.

5. Soft magnetic composite (SMC) is a material with low magnetism and high magnetic permeability.

New soft magnets for soft magnetic materials

New soft magnets in soft magnetic material electronic transformers mainly include the following categories: optimized soft magnetic ferrites: performance improvement: Traditional soft magnetic ferrites such as PC40, BH1 and JP4E, etc., have gradually improved their loss performance through continuous optimization, making these materials more competitive in the high-frequency market. High-frequency applications: New soft magnetic ferrites, such as TDK's PC50, FDK's 7H20, etc., can operate at a frequency above 1MHz, meeting the needs of high-frequency electronic transformers.

Some people use cobalt/silicon dioxide (Co/SiO2) nanocomposite soft magnetic materials to make large size cores different from thin films. The average size of the cobalt particles is 30 microns, and the filling degree is 40% to 90%. After stirring, the cobalt particles are annealed to form Co/SiO2 nano composite powder, which is then pressed into an annular magnetic core. The magnetic permeability below 300MHz can reach 16. The magnetic permeability of nickel-zinc ferrite is 12 and drops rapidly after 100MHz.

Nanocrystalline soft magnetic materials are a new generation of advanced soft magnetic alloys used to control and convert electrical energy, while ferrite is a traditional soft magnetic material.

Nanocrystalline soft magnetic materials are a new generation of advanced soft magnetic alloys used to control and convert electrical energy, while ferrite is a traditional soft magnetic material. In the application of common mode inductors, both have their own characteristics, but nanocrystalline soft magnetic materials show more advantages. Material characteristics comparison nanocrystalline soft magnetic materials: High magnetic permeability: Nanocrystalline soft magnetic materials have high magnetic permeability, which allows it to more effectively filter out external interference in the common mode inductance.

Application scenarios: Efficient electromechanical energy conversion Electric vehicle motors: When rotating at high speed, they withstand centrifugal mechanical loads, and traditional soft magnetic materials are prone to failure due to plastic deformation.

Soft magnetic materials refer to when magnetization occurs at a temperature of not more than 1000A/m, such materials are called soft magnets. Typical soft magnetic materials can achieve maximum magnetization with the smallest external magnetic field. Soft magnetic material is a magnetic material with low coercive force and high magnetic permeability. Hard magnetic materials are those that are difficult to magnetize and retain high residual magnetization after removing external fields.

What are the commonly used standards for high-frequency transformer cores

1. Commonly used standards for high-frequency transformer cores mainly include domestic national standards, International Electrotechnical Commission (IEC) standards and industry-general performance reference specifications, covering core dimensions such as size tolerances, electromagnetic properties, test methods and environmental protection requirements, and adapting to high-frequency working conditions (10kHz-10MHz above) application scenarios.

2. The core technical standards for high-frequency transformer cores at home and abroad are divided into three categories: domestic national standards, International Electrotechnical Commission IEC standards and regional standards of major industrial countries, focusing on core material, electromagnetic properties, test methods, and appearance size. Dimensions.

3. The specifications and standards of high-frequency transformer cores cover four categories: size series, material brand, performance parameters, and installation interface. Current domestic standards and international general specifications have clear technical requirements, and the indicators are clearly quantified.

4. The grounding of the high-frequency transformer core must meet the core requirements of low impedance, single point common ground, compliance with safety regulations and frequency adaptation. The specific requirements need to be implemented from four dimensions: grounding position, impedance control, safety compliance, and scene adaptation. To implement the grounding position requirements, it is necessary to select a metal mounting surface or a dedicated grounding pin position with symmetrical core structure and no stress concentration to avoid magnetic air gaps and winding areas, and prevent the introduction of eddy current losses or winding coupling interference.

5. Selection of core materials and core structure forms The criteria for selecting magnetic materials for high-frequency transformers are high initial magnetic permeability μi, low coercive force Hc, high saturation magnetic induction strength Bs, low remanence Br, high resistivity ρ and high Curie temperature point.

6. The core of selecting a high-frequency switching power supply transformer core is to match the operating frequency, power level and specific application scenarios. Ferrite materials are given priority, and comprehensive selection is made based on shape, temperature characteristics and cost. The core material ferrite core has become the mainstream choice in the frequency range of 20kHz to 1MHz due to its high resistivity and low loss.

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