Development and future of China's soft ferrite industry

Soft ferrite materials are important functional materials for electronic information and the home appliance industry. After entering the 21st century, with the continuous advancement of technology, the demand for soft ferrite materials will continue to increase, and performance requirements will continue to increase. The development of China's soft ferrite industry is very rapid and the market prospect is broad.

Magnetic materials play an important role in modern industry and science and technology. They have made significant contributions to the leap in performance of machinery, electronics and information, and are key materials to support and promote social development. The most widely used magnetic materials in industrial production and practical applications are mainly divided into four categories: cast magnets, soft ferrites, permanent ferrites and rare earth permanent magnets. Soft ferrite is one of the most widely used and widely used magnetic materials, and is an important basic functional material for electronic information and home appliance industries. At present, the world's magnetic material production is about 1.277 million tons, of which soft ferrite output is about 386,000 tons, accounting for about 30% of the total output. The output of magnetic materials in China is about 637,000 tons, of which the output of soft ferrite is about 205,000 tons, accounting for about 32% of the total output.

Application field

Soft ferrite can be divided into high permeability ferrite, power ferrite and anti-electromagnetic interference ferrite according to the application. The high magnetic permeability ferrite mainly refers to a Mn-Zn ferrite having an initial magnetic permeability of more than 5,000. The magnetic core prepared by high magnetic permeability ferrite has a significantly reduced volume, and is suitable for the development of components to be miniaturized and lightweight. It is widely used in the electronics industry and electronic technology, and can be used in communication equipment, measurement and control instruments, and household appliances. Broadband transformers, miniature low frequency transformers and miniature inductive components. Power ferrite mainly means low power consumption under certain frequency (several hundred gigahertz) and magnetic induction (several thousand Gauss), and its power consumption decreases with the temperature rise of the core, at around 80 °C. At the lowest point, a benign cycle of Mn-Zn ferrite is formed. Power ferrite is mainly used in power inductors such as switching power transformers and flyback transformers. It is the soft ferrite with the largest output. The anti-electromagnetic interference ferrite mainly refers to a Ni-Zn ferrite which realizes energy transmission and impedance conversion of a radio frequency signal in a wide frequency range. Devices such as filters and suppressors prepared using Ni-Zn ferrite in the system are a very effective and simple and economical way to achieve electromagnetic interference resistance.

Market and production of soft ferrite

Market demand

The application of soft ferrite in the industry began in the late 19th century and was accompanied by the rise of electric power and telecommunications technology, and its application range is extremely wide. Soft ferrite is not only used in the home appliance field, information technology field, automobile field and other supporting fields, but more importantly, soft ferrite as a main raw material for the production of electronic components has brought about a continuous demand. As a basic functional product, ferrite soft magnetic components with soft ferrite as the main raw material have penetrated into various fields of human production and life. From the perspective of resources and applications, ferrite soft magnetic The development prospects of components are very broad, and their demand will also increase. In recent years, the rapid development of computers, mobile communications, optical fiber communications, EMC, DVD, digital TV and new lighting fixtures has opened up a larger market for the application of soft ferrite. In this market, the fast-growing soft ferrite products mainly have the following types: power ferrite, which accounts for about 50% of the total amount of soft ferrite; high-permeability ferrite, which accounts for the total 25%; soft ferrite for broadband RF and electronic ballasts and lighting transformers, accounting for about 10% of total; anti-electromagnetic interference (EMI) ferrite components, accounting for about 5% of total output.

The soft magnet ferrite has a large investment in production and a wide area, and is an industry that consumes a lot of energy and requires a large amount of labor. China has cheap labor, abundant raw material resources and energy, and also has a large number of electronic transformers and inductor manufacturers and the world's largest color TV, display, computer and peripheral manufacturing industries. Therefore, the main producing areas of soft ferrite have gradually shifted from Japan, the United States, Western Europe and other countries to China, which is conducive to promoting the market demand for soft ferrite in China. According to relevant departments and experts, in the next 5-10 years, the annual growth rate of the world soft ferrite market will remain at 6% to 10%, while China will grow at an average annual rate of 15% to 20%. Rate development. It is foreseeable that after 2010, the market demand for soft ferrites in China will be higher than 300,000 tons, which will provide huge development space for domestic soft ferrite enterprises.

The market demand for high-performance soft ferrites (equivalent to PC40 and H5C2 and above series of Japanese TDK products) is also increasing year by year. The ratio of high-performance soft ferrite to the total demand for soft ferrite has increased from less than 10% in 2000 to over 30% in 2005 (20,000 tons for PC40 and above, 10,000 tons for H5C2 and above). Some foreign components, complete machine supporting companies, such as MOTOROLA, NOKIA and other mobile phone companies, BELL, LUCHUN and other communication companies, IBM, DELL and other computer companies, as well as Sony, Panasonic, Toshiba, Samsung and other well-known home appliance manufacturers have come The establishment of factories in China has intensified the market demand for high quality soft ferrites. In addition, China has joined the WTO. Under the general trend of global economic integration, the soft ferrite component industry has to be forced to establish new awareness and new ideas at the same time in both domestic and foreign markets. This will promote the improvement of the overall level of China's soft ferrite industry and the increase of output, which is conducive to the development of China's soft ferrite industry.

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