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At the 2021 China rare Earth permanent Magnet Industry Market Application Development Forum held by SMM, Xia Ning, a senior engineer of Inner Mongolia Baotou Steel rare Earth Magnetic Materials Co., Ltd., brought you the current situation and development direction of NdFeB rapid solidification alloy technology.
The opportunity period for the development of the industry has come.
Among the rare earth functional materials in China, rare earth permanent magnet materials account for the highest proportion, accounting for 75%, with an output value of about 50 billion yuan. If the output value of the whole industrial chain from NdFeB rare earth raw materials to NdFeB finished products is calculated, the approximate proportion is more than 60% of the total output value of China's rare earth industry.
The prosperity of the rare earth permanent magnet industry: the cost competition of middle and low-end products has intensified, and the focus of technological direction has shifted to composition optimization; high-end products pursue breakthroughs in application fields and turn to performance improvement; the influx of funds and talents provides support for technological progress; technological innovation centers and R & D centers at all levels have been established to provide conditions for scientific and technological means innovation.
The focus of technological research has changed.
Technical research focuses on two aspects: cost reduction and performance improvement:
First, with the continuous improvement of the manufacturing level and automation level of the industry, the technical focus of cost reduction is on the optimization of composition ratio and rapid solidification alloy. Second, driven by the application of new technology, the maximum magnetic energy product of NdFeB has reached more than 90% of the theoretical value, while the coercivity is less than 30% of the theoretical value, and the technical focus of performance improvement is also on composition optimization and rapid solidification alloy.
Cost control: middle and low-end field: competition in application field; competition in cost control.
Intellectual property: high-end field: competition for application expansion; competition for performance improvement.
Technical Development Direction of rapidly solidified Alloys
Solidification process model
Introduction of Baotou Steel rare Earth Magnetic material Co., Ltd.
Baotou Iron and Steel rare Earth Magnetic material Co., Ltd. is a high-tech company specializing in the production of high-quality NdFeB rapid solidification strip alloy and sintered NdFeB magnet. The company was founded in 2009 with a registered capital of 667 million yuan and is an absolutely controlled subsidiary of Northern rare Earth Group Co., Ltd.
At present, it has an annual output of 15000 tons of high-quality NdFeB rapid solidification thin strip alloy products and an annual capacity of 3000 tons of sintered NdFeB magnets.
Development advantages:
Resource advantages: Baotou Iron and Steel Group has the world's largest rare earth mine; Northern rare Earth Group has a full process industrial chain from rare earth smelting to metal, supporting the development of Baotou Iron and Steel Magnetic Materials Company from the raw material end.
Technical advantages: relying on the largest rare earth application research institute in China-Baotou rare Earth Research Institute NdFeB magnetic material technology, constantly improve the technical level of products and expand the field of application.
Equipment advantages: magnetic material company has 18 advanced alloy melting equipment and supporting testing equipment, with an annual production capacity of 15000 tons of high-quality rapid solidification alloy; the National rare Earth functional Materials Test and Evaluation Industry Center provides domestic first-class testing technology and equipment for magnetic materials companies.
