Against the backdrop of increasingly strict global energy efficiency standards, permanent ferrite magnets are becoming the preferred magnetic material for energy conservation and consumption reduction in fields such as home appliances, automobiles, and industrial motors, thanks to their triple advantages of "low cost, high efficiency, and green manufacturing".
1. Material level: Performance improvement leads to direct energy conservation
High residual magnetism + high coercive force
The latest wet-pressed ferrite magnetic tiles have Br≥ 4.2kG and Hcj≥ 4.0kOe, which can output the same torque at a lower current. The copper loss and iron loss of the motor decrease by 8% to 15% simultaneously.
Low-temperature sintering process
The patented formula and secondary sintering at a low temperature of 1180 ℃ refine the grain structure, reduce eddy current loss, and further lower the energy consumption per ton of magnetic tiles by 5%.
2.Device level: Energy-saving of variable-frequency friendly amplification system
Wide speed range and high efficiency
The demagnetization inflection point of the high coercive force magnetic tile is flat, supporting the stable operation of DC inverter motors at a low frequency of 1 Hz, avoiding the waste of "a big horse pulling a small cart". The energy efficiency ratio of inverter air conditioners has thus increased by 20%.
High-temperature stability
The Curie temperature is 450 ℃, and the magnetic flux attenuation under the operating conditions of -30 ℃ to 120 ℃ is less than 3%, ensuring that the compressor and fan can still maintain high-efficiency zone operation under extreme weather conditions.
Both volume and weight have decreased
When the magnetic energy product is increased by 10%, the motor length can be shortened by 10% to 15%, directly reducing the usage of copper wires and silicon steel sheets, thus achieving "secondary energy conservation".
3.System Level: Waste Heat Utilization and Energy Conservation throughout the Entire Life Cycle
Waste heat recovery of double-layer roller kiln
The latest sintering kiln has led the 250 ℃ hot air from the cooling section back to the preheating and drying section, replacing electric heating. The daily production capacity of a single kiln is 20 tons, and the unit energy consumption has been reduced to 0.70 kWh/kg, saving 30% of electricity compared to traditional kilns.
A super-long lifespan of 30 years
Ferrite is corrosion-resistant and anti-oxidation, with a demagnetization rate of less than 3% for 30 years. It avoids the system efficiency decline caused by demagnetization or corrosion of rare earth magnets and does not require additional energy consumption compensation throughout its entire life cycle.
From the perspective of the entire chain of "materials - devices - systems", permanent ferrite magnets, with their low raw material costs, low manufacturing energy consumption, low operating losses, and high reliable lifespan, provide scalable and replicable energy-saving solutions for the three major energy-consuming terminals of home appliances, automobiles, and industry. Driven by the "dual carbon" goals, ferrite permanent magnets are not only transitional substitutes but also long-term sustainable green magnetic cores.
