Are you looking for the best transformer core lamination materials from China? With numerous top-notch factories, choosing the right one can be daunting. Let’s dive into a comparison of China’s leading manufacturers, such as Lammotor, Jiangyin Chuangjia Electrical Co., and others, to help you make an informed decision.
Transformer Laminations in China
Product Details: Lammotor specializes in producing various types of transformer laminations, including E-type, EI, UI, and EE laminations. These laminations are made from high-quality materials such as Non-Grain Oriented (NGO) steel, Grain Oriented (GO) steel, Cold Rolled Motor Lamination (CRML) steel, and Amorphous Metal Alloys. The laminations are used in transformer cores for applications in power distribution, industrial machinery, and electronics. The manufacturing process includes high-speed stamping for mass production and laser cutting for prototyping and custom designs. The thickness of the laminations typically ranges from 0.2 mm to 0.5 mm, depending on the application, and they are stacked to minimize eddy
current losses and enhance efficiency[3].
Pros:
– High-quality materials ensure efficiency and durability.
– Various types of laminations (E-type, EI, UI, EE) to meet specific requirements.
– Advanced manufacturing capabilities for high-speed stamping and precise laser cu…
– Reduced energy losses due to eddy current minimization.
– High magnetic permeability and low core loss, especially with amorphous metal al…
– Compact and efficient designs, such as toroidal laminations, for sensitive elect…
Cons:
– Silicon steel laminations are susceptible to corrosion and have a degree of brit…
– Amorphous metal laminations, while offering superior magnetic properties, can be…
Transformer Core – Silicon steel core
Product Details: Silicon steel core transformers are constructed using thin laminated sheets of silicon steel, which is a soft magnetic material. This material is chosen for its high permeability, reduced eddy current losses, and enhanced magnetic properties. The cores are typically made from grain-oriented electrical steel with a silicon content up to 3.2%, which increases electrical resistivity and reduces core losses. These transformers are widely used in power distribution, voltage transformation, and various industrial processes due to their cost-effectiveness and durability.
Pros:
– High durability and resistance to mechanical stress
– Cost-effective with a lower initial cost
– Flexible in design and dimensions, allowing for a wide range of applications
– Suitable for applications with frequent on-off cycles or shorter operational per…
Cons:
– Higher energy losses due to hysteresis and eddy currents, especially in continuo…
– Less energy-efficient compared to amorphous core transformers
– Generate more heat during operation, requiring higher cooling requirements
– Produce more audible noise during operation due to higher losses and vibration
China 50-2500kva Distribution Transformer Core High …
Product Details: The product is a distribution transformer core with a capacity range of 50-2500kVA, originating from China and shipped from ports such as Guangzhou and Shenzhen. The transformer core serves as a pathway for magnetic flux and is a crucial component in electrical transformers.
Pros:
– High-frequency performance
– Crucial component for efficient magnetic flux pathway
Cons:
– Limited information provided on specific drawbacks
– No detailed specifications on potential environmental or operational limitations
4 Different Types of Transformer Core Materials
Transformer Laminations in China
Product Details: Transformer laminations are made from silicon steel strips, typically in EI or three-phase configurations. Standard sizes range from EI 28 to EI 240, with customizable gap sizes. The material used is usually Grain-Oriented (GO) or Non-Grain Oriented (NGO) silicon steel. Thicknesses vary from 0.30mm to 0.50mm. These laminations are used in various applications including power transformers, control transformers, and small electronics[1][3][5].
Pros:
– Low iron loss and high magnetic flux strength, meeting international standards[1…
– Cost-effective, durable, and able to handle high voltages[2].
– Minimal space requirement, lightweight, and produce less noise[2].
– Better mechanical stability and suitability for high-frequency currents[4].
– Reduced eddy current losses and improved cooling due to greater surface area[4].
Cons:
– Low saturation flux density, limiting operation under high magnetic loads[2].
– Increased energy losses due to eddy currents, leading to lower efficiency and hi…
– More expensive to manufacture and maintain compared to other types of cores[4].
– Regular upkeep is required, especially in extreme environments[4].
– Can be noisier due to cooling fans and other components[4].
EE Transformer Lamination Core In China
Product Details: EE-type transformer cores are made from silicon steel sheets or other materials with high magnetic permeability. They have a distinctive ‘E’ shape, forming the magnetic circuit of a transformer. These cores are available in various sizes such as EE-20, EE-21.4, EE-24/25, EE-26/27, and EE-32. They can be customized to meet specific requirements, including the size of the E-laminations, stacking method, or air gap design.
Pros:
– Stable Structure: The EE-type core has a simple and symmetrical structure, ensur…
– Uniform Magnetic Flux Distribution: The design ensures symmetrical magnetic flux…
– Wide Applications: Suitable for switch-mode power supply transformers, pulse tra…
– Flexibility: Adjustable magnetic properties by changing the size of the E-lamina…
– Efficient Operation: Minimizes eddy current losses, contributing to more efficie…
Cons:
– Low Saturation Flux Density: Limits the ability to operate under high magnetic l…
– Energy Losses: Eddy currents generated can increase energy losses, leading to lo…
Transformer Laminations In China
Product Details: Lamnow specializes in customized electrical steel laminations for transformers, including C, EI, and UI types. These laminations are precision-engineered to enhance energy efficiency and are used in various industries such as power distribution, renewable energy, rail transportation, home appliances, and manufacturing. The materials used include Non-Grain Oriented (NGO), Grain Oriented (GO), Cold Rolled Motor Lamination (CRML) steel, and Amorphous Metal Alloys. Advanced stamping capabilities include progressive stamping, large blank compound stamping, and rotary notch stamping. The company also offers transformer core lamination prototype services using techniques like laser cutting and wire cutting.
Pros:
– Enhance energy efficiency
– Optimize energy transfer and minimize losses
– Suitable for diverse applications including power distribution, instrumentation,…
– High reliability and low cost for UI-type laminations
– Precision lamination solutions to lower core loss and enhance transformer effici…
– On-time, in-full delivery from high-volume manufacturing facilities
– Minimize eddy current losses by using laminations with insulating coatings
Cons:
– Laminated cores have a low saturation flux density, limiting their ability to op…
– Eddy currents generated increase energy losses, leading to lower efficiency and…
china transformer core laminations manufacturer – Gaotune
Product Details: Gaotune Technologies Co., Ltd. offers a diverse range of transformer core products. These include Amorphous C-Core, Nanocrystalline Core, C-Core, E-Core, Block Core, Ring Core, Oval Core, Amorphous Stator & Rotor, Powder Core, and various specialized cores such as Common Mode Choke Core and EMI Core applied to Electric Vehicles. The amorphous c-core is noted for its regular shape and good repeatability, often used in solar inverters, wind power inverters, and other AC reactors and DC inductors. Nanocrystalline cores are applied to current transformers, sensors, and common mode chokes. The company also provides silicon steel C-Core and various shielding products like
shielding film, coil, and plate[5].
Pros:
– High efficiency due to minimized eddy current losses
– Wide range of applications including solar inverters, wind power inverters, curr…
– ISO 9001 certification and RoHS compliance ensuring high quality and environment…
– Good repeatability and regular shape of amorphous c-cores
– Enhanced magnetic flux efficiency and reduced losses
Cons:
– Complex manufacturing process requiring precise alignment and baking of laminati…
– Higher production costs compared to solid cores due to the lamination process
– Dependence on high-quality electrical steel and insulating coatings for optimal…
1KG CHINA Metal Steel 5.25 Inch E&I Lamination Core For …
Product Details: EI transformer cores are made from laminations of grain-oriented electrical steel, shaped as E and I components. These laminations are stacked to form the core, with primary and secondary windings wound on bobbins. The cores are available in various sizes, such as EI-28 to EI-288 for single-phase and 3PEI-16 to 3PEI-50 for triple-phase applications. The material used includes CRGO and CRNGO with thicknesses ranging from 0.23mm to 0.5mm. These cores are suitable for power, electronic, and other low-wattage applications, operating at frequencies of 50Hz-60Hz[2][4][5].
Pros:
– Easy and economical to manufacture
– Lower coupling capacitance between primary and secondary, reducing high-frequenc…
– Can be mounted at multiple points, making them suitable for equipment subject to…
– Small stray magnetic field, which can be efficiently blocked with shielding
– Simple corner fixings hold the core together, reducing manufacturing complexity
Cons:
– Small imperfections and burrs in the laminations create an effective air gap, re…
– Loose laminations can vibrate, producing mechanical noise
– Comparatively poor productivity due to exposed surface area
Quality Transformer Core with Silicon Steel Material EI …
Product Details: EI lamination cores are made from silicon steel strips, available in standard sizes from EI-28 to EI-240 and non-standard sizes from EI-28.2 to EI-288. The gap sizes of the transformer lamination core can be customized. These cores are used in power transformers, control transformers, and other power equipment. The raw materials used are CRGO (Cold Rolled Grain Oriented) and CRNGO (Cold Rolled Non-Grain Oriented) silicon steel, with thicknesses ranging from 0.30mm to 0.50mm. The cores have a smooth surface, no rust, and no defects like rolling marks or delamination[1][4][5].
Pros:
– Low iron loss and high magnetic flux strength, improving energy efficiency and r…
– Excellent magnetic permeability, making the magnetic circuit smoother and improv…
– High temperature stability, maintaining good magnetic properties and structural…
– Good insulation with uniform color, strong adhesive, and high heat resistance.
– Easily punched and cut with high dimensional accuracy.
Cons:
– Custom non-standard sizes may require additional mould charges.
– Minimum order quantity (MOQ) is 500KG, which could be a limitation for small-sca…
Comparison Table
| Company | Product Details | Pros | Cons | Website |
|---|---|---|---|---|
| Transformer Laminations in China | Lammotor specializes in producing various types of transformer laminations, including E-type, EI, UI, and EE laminations. These laminations are made f… | – High-quality materials ensure efficiency and durability. – Various types of laminations (E-type, EI, UI, EE) to meet specific requirements. – Advanc… | – Silicon steel laminations are susceptible to corrosion and have a degree of brit… – Amorphous metal laminations, while offering superior magnetic… | lammotor.com |
| Transformer Core – Silicon steel core | Silicon steel core transformers are constructed using thin laminated sheets of silicon steel, which is a soft magnetic material. This material is chos… | – High durability and resistance to mechanical stress – Cost-effective with a lower initial cost – Flexible in design and dimensions, allowing for a w… | – Higher energy losses due to hysteresis and eddy currents, especially in continuo… – Less energy-efficient compared to amorphous core transformers… | www.siliconsteelcore.com |
| China 50-2500kva Distribution Transformer Core High … | The product is a distribution transformer core with a capacity range of 50-2500kVA, originating from China and shipped from ports such as Guangzhou an… | – High-frequency performance – Crucial component for efficient magnetic flux pathway | – Limited information provided on specific drawbacks – No detailed specifications on potential environmental or operational limitations | www.shungesteeltrade.com |
| 4 Different Types of Transformer Core Materials | lammotor.com | |||
| Transformer Laminations in China | Transformer laminations are made from silicon steel strips, typically in EI or three-phase configurations. Standard sizes range from EI 28 to EI 240,… | – Low iron loss and high magnetic flux strength, meeting international standards[1… – Cost-effective, durable, and able to handle high voltages[2]…. | – Low saturation flux density, limiting operation under high magnetic loads[2]. – Increased energy losses due to eddy currents, leading to lower effic… | www.tradeindia.com |
| EE Transformer Lamination Core In China | EE-type transformer cores are made from silicon steel sheets or other materials with high magnetic permeability. They have a distinctive ‘E’ shape, fo… | – Stable Structure: The EE-type core has a simple and symmetrical structure, ensur… – Uniform Magnetic Flux Distribution: The design ensures symmetr… | – Low Saturation Flux Density: Limits the ability to operate under high magnetic l… – Energy Losses: Eddy currents generated can increase energy los… | lamnow.com |
| Transformer Laminations In China | Lamnow specializes in customized electrical steel laminations for transformers, including C, EI, and UI types. These laminations are precision-enginee… | – Enhance energy efficiency – Optimize energy transfer and minimize losses – Suitable for diverse applications including power distribution, instrumen… | – Laminated cores have a low saturation flux density, limiting their ability to op… – Eddy currents generated increase energy losses, leading to low… | lamnow.com |
| china transformer core laminations manufacturer – Gaotune | Gaotune Technologies Co., Ltd. offers a diverse range of transformer core products. These include Amorphous C-Core, Nanocrystalline Core, C-Core, E-Co… | – High efficiency due to minimized eddy current losses – Wide range of applications including solar inverters, wind power inverters, curr… – ISO 900… | – Complex manufacturing process requiring precise alignment and baking of laminati… – Higher production costs compared to solid cores due to the lam… | www.gaotune.com |
| 1KG CHINA Metal Steel 5.25 Inch E&I Lamination Core For … | EI transformer cores are made from laminations of grain-oriented electrical steel, shaped as E and I components. These laminations are stacked to form… | – Easy and economical to manufacture – Lower coupling capacitance between primary and secondary, reducing high-frequenc… – Can be mounted at multipl… | – Small imperfections and burrs in the laminations create an effective air gap, re… – Loose laminations can vibrate, producing mechanical noise – Co… | udvabony.com |
| Quality Transformer Core with Silicon Steel Material EI … | EI lamination cores are made from silicon steel strips, available in standard sizes from EI-28 to EI-240 and non-standard sizes from EI-28.2 to EI-288… | – Low iron loss and high magnetic flux strength, improving energy efficiency and r… – Excellent magnetic permeability, making the magnetic circuit s… | – Custom non-standard sizes may require additional mould charges. – Minimum order quantity (MOQ) is 500KG, which could be a limitation for small-sca….. | www.diytrade.com |
Frequently Asked Questions (FAQs)
Frequently Asked Questions About Transformer Core Lamination Material Factories in China
What materials are commonly used for transformer core laminations in Chinese factories?
Chinese factories typically use silicon steel strips, particularly cold-rolled grain-oriented (CRGO) silicon steel, for transformer core laminations. This material is chosen for its low magnetic permeability and low loss, which help reduce eddy current losses during operation.
How are transformer core laminations manufactured in China?
The manufacturing process involves several steps: raw material preparation, cutting the silicon steel strips accurately using CNC punch machines or flying shears, forming the cut strips into specific shapes through lamination and pressing, and heat treatment to eliminate internal residual stress and improve magnetic permeability.
What are the key advantages of using laminated cores in transformers produced in China?
Laminated cores offer several advantages, including reduced eddy current losses and iron losses. The laminations are stacked alternately to produce overlapping joints, which minimize flux leakage and enhance the overall magnetic flux density. This results in higher energy efficiency and durability.
How do Chinese factories ensure the quality of their transformer core laminations?
To ensure quality, Chinese factories often undergo third-party audits to confirm their ability to manufacture products to high standards. They also implement strict quality control measures, such as controlling the heating temperature and time during the heat treatment process, and using advanced machinery like CNC automatic cutting lines.
What are the common types of transformer core designs produced in Chinese factories?
Chinese factories produce various types of transformer core designs, with the most common being the closed-core and shell-core transformers. For example, E-I core laminated transformer construction is widely used in isolation transformers, step-up and step-down transformers, as well as auto-transformers. These designs are chosen based on the specific application and performance requirements.