B23P085 High Efficient CRGO Silicon Steel Transformer Lamination Core
Oct 21, 2025
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CRGO silicon steel transformer lamination core
A CRGO silicon steel transformer lamination core is a transformer core made from a specific type of electrical steel called Cold-Rolled Grain-Oriented (CRGO) silicon steel. This material is used to improve transformer efficiency because it has superior magnetic properties in the rolling direction, which results in low energy losses and low magnetizing current requirements. The core is constructed from thin, stacked laminations that are precisely cut and shaped from the CRGO steel sheets.
transformer lamination core Feature
CRGO steel:
This is a silicon steel alloy with a high electrical resistivity that is processed to have its magnetic grains aligned in the rolling direction.
High magnetic properties:
The grain-oriented structure provides high magnetic permeability and low core losses, making it ideal for high-efficiency transformers.
Laminations:
The core is made of very thin, stacked laminations to reduce eddy currents. Thinner laminations lower eddy current losses but can increase manufacturing costs.
Manufacturing process:
The CRGO steel is stamped or cut into specific shapes and sizes using advanced techniques like laser or punch presses to create the laminations.
Application:
CRGO cores are widely used in power generation, transmission, and distribution transformers due to their efficiency.
The Importance of CRGO Transformer Laminations
The precise manufacturing of CRGO transformer lamination is essential for achieving high efficiency in transformers. Key benefits of using CRGO steel include:
- Lower Core Losses: The grain-oriented structure reduces hysteresis and eddy current losses.
- Improved Magnetic Permeability: Enhances transformer efficiency and reduces energy consumption.
- Higher Durability: The insulation coating and stress-relief annealing increase longevity.
Transformer Core specification
Premium Quality & Fully Assembled Transformer Cores
Maximum Weight of Automatically Stacked Core: 60 Tons
Maximum Weight of Manually Stacked Core: 120 Tons
Precision Gap Limit at the Joint: Less than 1.0mm
Window Height Precision Accuracy: ±1mm
Window Width Precision Accuracy: ±1mm
We meticulously calculate and constantly update the quotation based on your precise drawings, ensuring the highest accuracy and cost-efficiency.Upon your confirmation, we will promptly initiate production based on the detailed drawings you provide, ensuring exact adherence to your specifications.
Oriented silicon steel is a superior low-carbon silicon iron alloy with a silicon content of 0.5% to 4.5%. It boasts high permeability, greatly reducing Joule loss in power equipment, thus enhancing efficiency and promoting energy savings. Furthermore, it features lower iron loss and a high resistance coefficient.
Raw Material: Premium CRGO silicon steel sourced from Baosteel and WISCO.
| Type | Grade | Width | Max Core Loss@P1.7T/50Hz | Lamination Factor(%) | Min Induction@B800 |
| Common Type | 23Q110 | 35-1200mm | 1.10w/kg | 97.2 | 1.82T |
| 23Q120 | 1.20w/kg | 97.2 | 1.82T | ||
| 27Q120 | 1.20w/kg | 97.5 | 1.82T | ||
| 30G120 | 1.20w/kg | 98 | 1.82T | ||
| High Induction Type |
B20P085 | 35-1200mm | 0.85w/kg | 97 | 1.86T |
| B23P085 | 0.85w/kg | 97.2 | 1.88T | ||
| B23P090 | 0.90w/kg | 97.2 | 1.88T | ||
| B23P095 | 0.95w/kg | 97.2 | 1.88T | ||
| B23P100 | 1.00w/kg | 97.2 | 1.88T | ||
| B27P095 | 0.95w/kg | 97.5 | 1.89T | ||
| B27P100 | 1.00w/kg | 97.5 | 1.89T | ||
| B30P120 | 1.20w/kg | 98 | 1.89T | ||
| Domain Refined High Induction Type(Laser) |
B20R070 | 35-1200mm | 0.70w/kg | 97 | 1.86T |
| B23R085 | 0.85w/kg | 97.2 | 1.88T | ||
| B27RK085 | 0.85w/kg | 97.5 | 1.89T |
GNEE Featured Products
Gnee provides premium iron cores to the world. Our cores can be selected in a wide range of materials, shapes, applications, manufacturing techniques, etc., to meet customers' diverse demands. Explore our wide product range now~
Manufacturing Process
1. Raw Material Sourcing
2. Slitting
3. Punching
4. Laminating
5. Core Forming
6. testing
GNEE EC
Founded in 2008 and located in Anyang in China, Gnee Electric is a high-tech enterprise specializing in researching and manufacturing iron core products.
The company currently occupies over 20,000 square meters and employs more than 200 people, including over 80 professionals. After more than 18 years of development, we have built our own magnetic material production base and independently develope, produce, and sell various kinds of iron cores. The common types include silicon steel cores, motor cores, transformer cores, toroidal iron cores, special-shaped cores, custom cores, and others. Our cores are widely applied in different sectors including transformers, motors, mutual inductors, voltage stabilizers, welding machines, magnetic amplifiers, and instrumentation, providing diverse core solutions to global customers.
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Why Choose GNEE EC?
GNEE EC was founded in 2008, which is a National High-tech Enterprise & Famous Brand Enterprise in China, developing into a professional manufacturer and supplier of high-quality iron cores.
18+
Over 18 years of success in the iron core industry;
National High-tech Enterprise & Famous Brand Enterprises in China;
200+
Over 200 employees;
The R&D team has more than 80 experienced engineers and the production team has more than 100 skilled staffs;
35+
Annual turnover up to 35 million dollor per year;
Owns many sets of highly automatic winding, annealing, and assembling machines;
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Over 1000 customers in domestic and overseas markets;
core Products are exported to more than 70 countries in the world;
Gnee Iron Core Factory Overview
Meet Our Sales Manager
"The Core of the Iron Core, the Power of Leadership" - See Our Great Decision-Makers Deeply Engaged in the Magnetic Materials Industry.
Edison Zhang
CEO
Kelly Zhang
General Manager
Alex Cao
Sales Manager
Industries Served
Automobile Industry
New Energy
Transformer Applications
Our Mission
Strive To Create world-class Iron core brand
With 18 Years of industry experience, we focus on the research, development, and manufacturing of high-quality iron cores for electricity, industrial control, new energy, and automotive markets