Transformer Cores
Transformer Cores are magnetic components assembled from silicon‑steel laminations to concentrate magnetic flux, reduce energy loss and guarantee stable electromagnetic conversion. It is commonly used in power distribution, new‑energy equipment and industrial transformers.
Transformer Cores
Transformer cores are one of the most critical and widely‑used magnetic components, whose core raw material is CRGO (Cold‑Rolled Grain‑Oriented silicon steel). They are fabricated by stacking numerous thin CRGO laminations through precise assembly procedures.
Transformer cores suppress eddy‑current loss, optimize magnetic flux conduction, and guarantee high‑efficiency electromagnetic energy conversion. Mainly used in industries such as power grids, new‑energy power equipment, electrical transformers, and industrial power supplies. Driven by stricter global energy‑saving standards, the industry trend moves toward thinner high‑grade Hi‑B CRGO laminations for lower core loss, compact size and quieter operation to meet growing demands for new‑energy and smart power systems。
Ultra‑low core loss
Minimizes hysteresis & eddy‑current loss, less heat and energy waste.
High magnetic permeability
Lower excitation current, compact core size for given power.
Low magnetostriction
Reduces vibration and noise for stable transformer operation.
Manufacturing Process
Process Overview
Our professional manufacturing strictly follows standardized production steps for CRGO transformer cores. Each procedure is precisely controlled to guarantee stable magnetic performance and consistent product quality.
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Specifications
Standard dimensions of products
| Available thickness(mm) | Available width range(mm) | Inside diameter(mm) |
|---|---|---|
| 0.23、0.27 | 700~1200 | 508 |
Dimensional and shape tolerances
| Thickness(mm) | Thickness tolerance(mm) | Longitudinal thickness tolerance(mm) | Traverse thickness tolerance(mm) | Width tolerance(mm) | Flatness(%) | Camber within 2m(mm) |
|---|---|---|---|---|---|---|
| 0.23 | ±0.025 | ≤0.030 | ≤0.02 | 0~+2 | ≤1.5 | ≤1.0 |
| 0.27 | ±0.03 |
Electromagnetic property standard
| Type | Grade | Thickness(mm) | Density(kg/dm³) | P1.7/50 | B8 |
|---|---|---|---|---|---|
| Common type | D23RK80 | 0.23 | 7.65 | 0.761-0.800 | 1.85-1.89 |
| D23RK85 | 0.810-0.850 | 1.85-1.89 | |||
| D23RK90 | 0.851-0.900 | 1.85-1.89 | |||
| D23RK95 | 0.891-0.950 | 1.85-1.89 | |||
| D23RK100 | 0.950-1.000 | 1.85-1.89 | |||
| D23RK105 | 0.971-1.020 | 1.85-1.89 | |||
| D23RK110 | 1.021-1.050 | 1.85-1.89 | |||
| D27RK95 | 0.27 | 7.65 | 0.900-0.950 | 1.85-1.89 | |
| D27RK100 | 0.950-1.000 | 1.85-1.89 | |||
| D27RK105 | 0.990-1.050 | 1.85-1.89 | |||
| D27RK110 | 1.021-1.090 | 1.85-1.89 | |||
| D27RK120 | 1.051-1.180 | 1.85-1.89 |
Manufacturing Process
Process Overview
Oriented silicon steel is widely used in the manufacture of various transformer cores. Known as a steel handicraft, it has a complex manufacturing process. Because of its excellent hysteresis loss, excellent magnetic induction, and extremely low loss. it is used in larce cenerators, high-efficiency motors. and other fieds as well as in UHv. photovoltaic wind power, charging piles, high-speed rail, and other infrastructure fields.
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