Amorphous Solid Core
For thousands of years, the metals and alloys used by humankind have been materials with crystalline structures, in which atoms are arranged in a three-dimensional, ordered manner, forming a periodic crystal lattice structure.
When amorphous alloys are rapidly cooled from a liquid state, because they cannot crystallize in time, the liquid atoms remain in a disordered, condensed state at room temperature or low temperatures, and the atoms do not maintain long-range alignment. They exhibit an ordered, periodic, and regular state, but remain in a long-term disordered state. The birth of amorphous alloys is hailed as a revolution in metallurgical materials science.
Amorphous alloys possess many unique properties, such as excellent magnetic properties, high strength, hardness, and high resistivity. New materials used in transformer cores can provide high saturation magnetic flux density, low coercivity, low losses (equivalent to 1/3 to 1/5 of silicon steel sheets), low excitation current, and good temperature stability.
Amorphous Alloy Core Processing Technology
Using amorphous alloys with outstanding magnetic properties as the core material for transformers can ultimately achieve very low loss values. However, many inherent properties of the material itself can also provide specific characteristics for amorphous alloy cores during manufacturing, mainly reflected in the following aspects:
● Cutting: Amorphous alloy materials are very hard, making cutting with conventional tools quite difficult. Therefore, the design should consider reducing the shearing volume.
● Stacking: Amorphous alloy sheets are extremely thin and the material surface is not very flat, resulting in a relatively low core fill factor.
● Forming: Amorphous alloys are very sensitive to mechanical stress, therefore special fastening measures are required during production.
● Annealing: To obtain excellent low-loss characteristics, the amorphous alloy core must undergo annealing, which is the core technology of the entire process.
Structural Features
● The three-phase five-limb amorphous core is suitable for producing Dyn11 connected transformers. The core size design retains the existing physical dimensions of amorphous cores currently on the market, meeting the assembly technology, equipment, and capacity requirements of existing amorphous alloy transformers.
● The core connector design adopts an advanced distributed stacking structure, with a size E at least 7% smaller than commonly used amorphous cores on the market, effectively reducing the overall size of the transformer.
● The core excitation power is low, which can significantly reduce the noise during transformer operation.
Post time: Nov-26-2025
