Better Machines Start with a Better Core
At Sino, we design and make electrical steel lamination stacks. These stacks are the core part of the world’s most powerful electrical machines. Our main goal is to help our partners, who are the biggest names in making motors and transformers. We give them a real edge over their competition. We do this by providing electrical steel laminations with better performance, making them with great care, and working closely with our partners’ engineers.
We understand that you are not just buying a part. You are investing in how well your final product works, how powerful it is, and how long it lasts. Our electrical steel laminations are key to this success.
Sino helps you build better machines. We offer:
Choosing the right electrical steel is the most important step in designing a magnetic core. We work with you to choose the best type of steel for your electrical steel laminations. To do this, we look at many things about your project. These include its operating frequency, how strong the magnetic field is, your budget, and how it handles stress and heat.
NGO steels are the go-to choice for machines that spin, like motors and generators. In these machines, the direction of the magnetic field is always changing. The key feature of NGO steel is that its magnetic properties are the same in all directions.
We have a wide range of NGO grades (like M270-35A, M400-50A). Higher-grade steels have less energy loss and contain more silicon. This is very important for high-efficiency motors (IE3, IE4, IE5 standards). It is especially important for the traction motors used in electric vehicles (EVs). When we make electrical steel laminations for EVs, we often suggest very thin steel (0.20 mm, 0.27 mm, 0.35 mm). This helps fight the energy loss that happens at high frequencies from PWM inverter drives.
GO steels are special because of their one-way properties. They create a path where it is very easy for magnetism to flow. This gives them very high permeability and low energy loss. This makes them perfect for things with a clear, one-way path for the magnetic field, like power and distribution transformers.
We offer different grades, including conventional GO (CGO), high-permeability GO (HGO), and domain-refined grades. A process called domain refinement, which uses a laser, can lower energy loss even more, by up to 15%. For our transformer electrical steel laminations, we suggest top-quality HGO grades. This helps reduce energy waste when the transformer is on but not busy. This saves a lot of money on electricity bills.
We are always looking for and using new materials to build cores for future machines that need to be even more efficient and powerful.
We work together with you to choose a material. We give you all the information you need, like data sheets, B-H curves, and core loss data. Our experts will talk with you to make sure the material you choose is the best one for your specific job and for your electrical steel laminations.
| Material Type | Primary Application | Key Advantages | Key Considerations |
| NGO Electrical Steel | Motors, Generators | Works the same in all directions, good price for the performance. | Higher energy loss than GO steel at low frequencies. |
| GO Electrical Steel | Transformers, Large Inductors | Very low loss & easy magnetic flow in one direction. | One-way magnetic path, can be affected by stress. |
| High-Silicon (6.5%) Steel | High-Frequency Motors/Inductors | Very low eddy current loss, almost no shaking. | Can break easily, costs more, harder to work with. |
| Amorphous Metal | High-Frequency Transformers | Extremely low hysteresis loss, works great at high-frequencies. | Can’t handle the strongest magnetic fields, affected by stress, costs more. |
We build every core based on three main ideas: being exact, being able to make a lot, and making sure every part is strong and works right. We offer all services, from making quick first samples to fully automated large-scale production of electrical steel laminations.
Quality is the most important thing at Sino. A small mistake can waste a lot of energy. That is why we check everything.
We work hard on controlling sharp edges on our electrical steel laminations. Sharp edges, or burrs, can cut through the thin coating and waste energy. We use special systems to find burrs and special ways to smooth the edges to make sure every piece is perfect.
Every single one of our electrical steel laminations has a very thin coat on it. This stops electricity from flowing between the layers. We use the best lamination insulation coatings, like C3 and C5 coatings and epoxy coating for laminations. We test the surface insulation resistance to make sure it is perfect. This resistance between the layers is very important.
We have special machines to test for energy loss. This machine tests the finished stack of electrical steel laminations to measure the core loss in electrical steel. We check the iron loss calculation and make sure it meets your needs. This process, along with core plate insulation testing, guarantees performance.
A number called the ‘stacking factor’ tells us how tightly the electrical steel laminations are packed. A higher number is better. It means there is more steel and less air, which helps the magnetism flow.
Sino electrical steel lamination stacks are used in many amazing machines made by industry leaders. We are proud to work with companies in many fields.
Our cores are in the EV traction motor core of cars made by leading electric vehicle companies and major car makers. Our electrical steel laminations are also used in permanent magnet motors and switched reluctance motors.
Our electrical steel laminations form the heart of generators for major players in renewable energy. Our stacks are in wind turbines on land and at sea. They help make clean power for everyone.
Our servo motor laminations are used in robots and factory machines from top automation companies. We also build cores for induction motors used in pumps and fans.
We make cores for wound core transformers and cut core transformers. These are used by big power companies to send electricity to your home.
When a part simply cannot fail, top aerospace companies trust Sino. Our electrical steel lamination stacks are in planes and other advanced machines.
When you work with Sino, you get more than just a part. You get a partner. Our engineers will work with you to help with your transformer core design or lamination tooling design. We are here to help you succeed.
Contact Sino today. Let’s build the future of power, together.
