High Magnetic Permeability Winding Notched Core - Custom Permalloy from China Suppliers & Factory
Product Introduction
Wound-type annular cut iron core.
Application Fields
Commonly used in electromagnetic components such as small and medium-sized transformers, mutual inductors, magnetic amplifiers and leakage protectors.
Core Material
High permeability permalloy soft tape material, such as 1J85, has excellent performance, high magnetic permeability and low loss.
Product Advantages
High efficiency and energy saving. Compared with stacked iron cores, the no-load loss of the wound core is reduced by 7%-10%, and the no-load current is reduced by 50%-75%.
Exquisite Craftsmanship
Fully automatic winding, smooth and tight, no shear waste, material utilization rate is nearly 100%, and production efficiency is 5-10 times higher than stacked iron cores.
Low Noise & Eco-Friendly
The integrated structure reduces noise by 5-10dB compared with stacked iron cores.
High Customization
To meet the diverse needs of customers, various specifications can be customized.
Process Features
CNC wire cutting, precise opening size. The center line of the incision passes through the center of the inner circle. After annealing, the residual magnetism is less than 5GS (0~2000GS).
The winding notched core must be annealed after processing. The purpose of annealing is to eliminate the internal stress generated during processing, thereby reducing the residual magnetism of the core. After annealing treatment, the residual magnetism of the iron core can be reduced to less than 5 Gauss (in the range of 0~2000 Gauss), which significantly improves the magnetic properties and stability of the iron core. Low residual magnetism means that the magnetic core can better maintain its magnetic properties in practical applications, reduce hysteresis losses, and improve the efficiency of electromagnetic components.
The application of winding notched cores in electromagnetic components has significant advantages. Its precise processing technology, low residual magnetism and excellent mechanical properties make it an ideal choice for electromagnetic components such as small and medium-sized transformers, mutual inductors, magnetic amplifiers, and leakage protectors. These features not only improve the performance and reliability of electromagnetic components, but also extend their service life.
| Trademark | Level | Strip thickness (mm) |
At 0.08 magnetic field permeability uo (GS/Oe) | Maximum magnetic permeability um (Gs/Oe) | Coercivity HC | Saturation magnetic hardness BS (GS) |
|---|---|---|---|---|---|---|
| no less than | no greater than | no less than | ||||
| 1J79B | YB/T5251-2013 | 0.05 | 20000 | 150000 | 0.03 | 7500 |
| 0.1 | 22000 | 200000 | 0.02 | |||
| 0.2 | 24000 | 220000 | 0.015 | |||
| 1J85B | YB/T5251-2013 | 0.05 | 45000 | 150000 | 0.02 | 6500 |
| 0.1 | 55000 | 180000 | 0.015 | |||
| 0.2 | 65000 | 220000 | 0.01 | |||
| 0.3 | 65000 | 250000 | 0.009 | |||
Note: The magnetic properties of YB/T5251-2013 in the above table are measured under DC state.
The main purpose of annealing is to eliminate the internal stress generated during processing. This process significantly reduces the residual magnetism of the core, thereby improving its magnetic stability and performance.
After proper annealing treatment, the residual magnetism of the iron core can be reduced to less than 5 Gauss (within the range of 0 to 2000 Gauss).
Wound cores offer high efficiency and energy savings. Compared to stacked iron cores, they reduce no-load loss by 7% to 10% and decrease no-load current by 50% to 75%.
They are widely applied in electromagnetic components, including small and medium-sized transformers, mutual inductors, magnetic amplifiers, and leakage protectors.
The cores are made of high permeability permalloy soft tape materials, such as 1J85. We offer a high degree of customization to meet diverse specifications and specific customer requirements.