I. Current status of magnetic materials industry 1. Pro […]
I. Current status of magnetic materials industry
1. Product output and output value are not adapted
China's magnetic materials industry has begun to take shape in terms of output, but it has not yet formed a strong international competitiveness in high-end products.
2, the performance of magnetic products is low
The production performance of NdFeB magnets is generally around N35 (magnetic energy product is 35MGOE), N40 and above and high coercivity grade N38H. Only a few companies in the N32SH can produce. The new brand launched abroad has reached N50, N48H.
3. Production process and equipment are relatively backward
China's total sales of magnetic materials special equipment reached 143 million yuan, which can provide complete sets of production equipment. Therefore, domestic enterprises should try to adopt a continuous production line with high degree of automation, reduce the influence of human factors and ensure the consistency of products.
Second, the development direction of soft ferrite
At present, the most widely used soft ferrites can be classified into: manganese-zinc power ferrite materials, manganese-zinc high-permeability ferrite materials for communication and electromagnetic compatibility (EMC), and manganese-zinc for deflection coils. It is a series of ferrite materials, radio frequency broadband and nickel-zinc ferrite materials for electronic interference (EMI) suppression. The material further develops toward high frequency, high magnetic permeability and low loss, that is, two high and one low directions. The device is moving toward miniaturization, chipping and surface mount.
Permanent ferrite material
Due to the increased demand for high-end magnets such as automobiles and computers, the proportion of high-end permanent magnets in China will increase rapidly. It is expected that the proportion of high-end products in the Y30H-1 series will increase from 40% in 2000 to over 60% in 2005 (about 126,000 tons) during the "Tenth Five-Year Plan" period. The output of the high-end products of the Y30H-2 series can reach 10%. About % (about 21,300 tons), the overall export proportion increased to more than 50%.