With the development of the automotive industry towards new energy and intelligence, there are many new requirements for new materials. Nanocrystalline strips will be the first choice for electric vehicles. Amorphous nanoparticles independently developed and produced by China TGJT Magnetic Materials Technology Group Crystal soft magnetic alloy strips have successfully entered the field of electric vehicles.
With the global upsurge in the industrialization of amorphous alloy materials, China has become one of the countries with the strongest scientific and technological strength and the largest production scale of amorphous alloy materials. Amorphous alloys are metal functional materials with new microstructures that have appeared in the past 30 years. They have excellent electromagnetic properties, corrosion resistance, wear resistance, and good toughness. TGJT's nanocrystalline ultra-thin ribbon series products are widely used to make magnetic cores for electronic components such as inverter power inductors and current / voltage transformers.
Amorphous soft magnetic materials belong to a very challenging new field, and its manufacturing process is completely different from the traditional business. TGJT has relied on the technology precipitation in magnetic materials such as alloy smelting and silicon steel for many years. After years of painstaking research, it has gradually overcome many problems such as amorphous alloy component design, key process control, equipment and facility improvement, and material performance improvement, laying a foundation for the development of new amorphous ultra-thin ribbons.
During this period, they found that with the development of the automotive industry towards new energy and intelligence, nanocrystalline strips will be the material of choice for products such as electric vehicles, smart appliances, and wireless charging of mobile phones.
Technological innovation and product research and development are important pillars and sources of power for the development and growth of enterprises. In order to meet the high-end product market requirements and realize the localization of amorphous ultra-thin ribbons, TGJT independently developed high-quality anti-DC series amorphous ultra-thin ribbon products and related production process technologies by undertaking key provincial research and development projects. Technical solutions such as crystalline composition and precise control of trace elements have effectively solved the problem of slow performance improvement of conventional amorphous materials, broke through the bottleneck of research and development of high-end nanocrystalline materials, and formed a resistance based on 1K107 and featuring 107NC ~ 107N5C DC product series.
At present, TGJT can produce amorphous ultra-thin ribbon products with a thickness ranging from 0.018 mm to 0.026 mm, and a width ranging from 2 mm to 55 mm. Among them, anti-DC products solve the technical problem of rapid decline in permeability under high saturation magnetic induction. The rate of change in the linear section of permeability is less than 10%, which meets the special requirements of high-end fields such as smart meters and electric vehicle charging. Used to manufacture circuit components of domestic and international well-known brands of electric vehicles.
In order to further improve the quality and stability of amorphous products, TGJT has independently developed a high-cleanness, low-cost nanocrystalline mother liquid smelting technology. Compared with the two-step process of conventional non-vacuum induction furnace smelting mother liquid + vacuum furnace remelting, TISCO adopts BOF → RH smelting mother alloy + vacuum induction furnace one-step smelting nanocrystalline mother liquid, which significantly improves the cleanliness of the mother liquid The production cost is reduced, and the impurity element content is reduced from 800PPm to 180ppm in the traditional process, and the alloy production cost is significantly reduced.
At the same time, TGJT adopts the efficient casting technology of amorphous ultra-thin strip. Based on the conventional casting mode, the ultra-thin strip casting process is solved by adopting technologies such as slag-flow steel channel, screen-type tundish and fully automatic steady flow casting. The problems of high nozzle clogging rate, uneven strip thickness and poor toughness have greatly improved the yield rate, and realized the efficient production of ultra-thin strips.