Applications

Motor Lamination Stacks Coating

At Sino, we help you build better motors. Our special motor lamination coating service makes your motors stronger, faster, and last longer. We add a thin, strong layer to your motor parts. This layer stops energy waste. It means your motors can do more work with less power. You save money on electric bills. Your machines also run cooler and do not break down as often. This improved performance comes from our expertly applied lamination stacks coating.

Why Our Coating is the Best Choice

Choosing a Sino coating gives you big benefits. Our way of doing things is made to give you the best results for any motor you make. We focus on what is most important to you: more power, saving money, and making your motors last a very long time. Our high-quality motor lamination coating is a key part of that promise.

More Power, Less Waste: The Real-World Impact of Sino's Coating Technology

Our coatings are great for stopping energy loss in the motor’s core. How well a lamination stacks coating works is something we can measure. It has a big and direct effect on the two main things that make a motor core lose energy. These two things are called eddy current losses and hysteresis losses. Our engineering team works by understanding these problems at a very deep level. This lets us control them to give you great performance every time.

Greatly Reducing Eddy Current Losses

Our coatings stop tiny, wasteful electric flows inside the motor core. This is called eddy current reduction. This means more power from the motor goes to doing actual work.

Making the Layers Resist Electricity Better

The main job of our motor lamination coating is to make a strong barrier that stops electricity from passing between the metal layers. We design our special coating mixtures to be very good at resisting electricity. This turns the steel core, which can carry electricity, into a stack of layers that are separated from each other electrically.

How Coating and Steel Thickness Work Together:

We work closely with you to find the perfect match between the thickness of the steel layers and the type of lamination stacks coating we use. Our high-tech methods for applying the coating make sure the insulation layer is even and perfect, even on the thinnest pieces of steel. This makes sure you get all the benefits of using thinner steel in the real world.

Also Helping to Reduce Hysteresis Losses

Our process also helps lower hysteresis losses. This is another way our motor lamination coating stops energy from being wasted.

Using Heat to Perfect the Coating and Steel

Many of our coating methods include a heating step that is controlled very carefully. This heating step is designed to do two things. First, it hardens the lamination stacks coating. Second, it helps relax the steel. This removes stress created when the steel was punched or cut. This brings the steel back to its best magnetic state.

Special Coatings that Manage Stress for Better Results

Something special about our advanced coating method is that we can control the amount of stress it puts on the steel. Some of our special coating and heating processes at Sino can add a helpful kind of stress to the surface of the steel layers. This can actually help reduce total energy loss in the core even more.

Here is a clear comparison of our coating’s impact:

Performance Metric

Standard/Basic Coating

Sino Advanced Coating Solution

How This Helps You

Interlaminar Resistance

Moderate (1-10 Ω·cm²)

Very High (>1000 Ω·cm²)

Greatly blocks the paths for wasteful currents. This is very important for motors that run at high speeds.

Eddy Current Losses

Baseline

Reduced by up to 95%

This directly leads to motors that work better, run cooler, and last much longer.

Coating Uniformity

+/- 1-2 microns

+/- 0.5 microns or better

Makes sure the whole core works the same way, getting rid of areas that could overheat.

Post-Stamping Stress

Unmanaged

Relieved via thermal cycle

Lowers energy loss by fixing the steel’s magnetic structure, making it work at its best.

Stacking Factor

94-96%

Up to 98%

Fits more active metal into the same space. This means you get more power from a smaller motor.

Cooler Running Motors and Stronger Protection

Wasted energy turns into heat. Our lamination stacks coating stops this waste. This helps manage the heat. The motor stays cool, so it can run longer without problems. Getting rid of heat is very important. Our motor lamination coating also provides excellent protection from rust. It protects the metal parts from rust and other damage. This is very important for motors that work outside or in wet places.

Quiet and Smooth

Some of our coatings, like our Backlack coating, help bond the metal parts together. This makes the motor core very solid. This helps make the motor much quieter and smoother when it runs.

The Sino Coating Portfolio: A Range of Engineered Solutions

We have a coating for every need. Whether you are making a small motor or a huge one, Sino has the right solution. We work with you to choose the perfect motor lamination coating. This ensures your stator and rotor parts are perfectly protected.

1. C-5/C-6 Inorganic Coatings: The Standard for High Heat

This is a very tough coating that can handle very high heat. These are mostly made from phosphate or silicate. They create a thin, hard layer that is like glass on the metal surface.

  • Key Benefits: Works great in very high heat, can be welded, and is not damaged by oils, grease, or chemicals used in factories.

Perfect For: Large industrial motors, hermetically sealed compressor motors, high-temperature power transformers, and cores that need stress removed after they are built. This motor lamination coating is best for motors that get very hot.

2. Advanced Polymer Composite Coatings: The Top Choice for Performance and Flexibility

This is a high-tech epoxy powder coating, often referred to as a C5 coating. These are usually made from epoxy or polyimide. We add special tiny particles to them to make them work for the toughest jobs.

Feature

C-5/C-6 Inorganic Coatings

Sino Advanced Polymer Composite Coatings

How This Helps You

Dielectric Strength

Good

Excellent to Superior

Makes motors more reliable, especially if they use high voltage or are controlled by inverters.

Thermal Conductivity

Low (Insulating)

Moderate to High (Conductive)

Lets motors run cooler and pack more power into a smaller size.

Mechanical Flexibility

Low (Brittle)

High (Durable & Flexible)

Lowers the chance of the coating cracking when the parts are being made and put together.

Adhesion

Good

Excellent

Makes a stronger, single-piece core that handles shaking and vibration much better.

3. C6 Coating / Backlack Coating & Solvent-Free Solutions

This is a special self-bonding varnish. It melts a little when heated, which glues the metal sheets together firmly. Sino also has a full range of coatings that do not use solvents. Instead, we use 100% solid epoxy or polyurethane glues for our lamination stacks coating process.

  • Making It Right: Using solvent-free coatings is better for the environment, but it is very tricky and requires very careful control. At Sino, we are experts at this. We carefully control how much coating is used, use the perfect heating process, and make sure all materials work together.
  • How You Benefit: You can meet the toughest environmental rules. It also makes the workplace safer. This method creates a very strong bond, which makes the motor core very stiff and extremely quiet. It is best for motors that need to be quiet and strong, like in fancy cars or machines.

How Sino Applies the Perfect Coating

Our process is very careful. We make sure every metal layer gets a perfect motor lamination coating. This promises a great insulation layer between the metal sheets. A good insulating layer is the most important part of preventing short circuits.

01
1
Preparation
First, we clean the metal sheets. These sheets are often made of Silicon steel or Cold-rolled motor lamination steel. They can be made by lamination stamping or laser cutting laminations.
02
2
Applying the Coat
We use modern tools for our automated coating line. We might use an electrostatic coating process, which uses static electricity to make the coating stick evenly. Other methods include fluidized bed coating, spray coating, or roller coating. For some special jobs, we might use manual coating.
03
3
Baking and Hardening
Next, the coated sheets go into a big oven. This is called heat curing. The heat makes the lamination stacks coating hard and strong. The varnish curing cycle is very important.
04
4
Checking Our Work
We test everything. We use a special test, called a Franklin test, to check how well the surface resists electricity. This tells us how well the coating stops electricity. We make sure the coating thickness and coating uniformity are perfect. The coating must stick to the metal very well.

This careful process makes sure that every stator core and rotor core we work on is ready to perform at its best. Our goal with our lamination stacks coating is to get the best stacking factor, so you can fit more power into a smaller space.

Materials We Coat for You

At Sino, we can coat many types of metal. Choosing the right metal is important for your motor.

  • Silicon Steel: This is the most common metal, also called electrical steel. We coat both non-grain oriented silicon steel and grain-oriented silicon steel.
  • High-Power Metals: For special jobs, we use strong metals. These include Cobalt alloys and Nickel alloys. They are great for aerospace motor coating. Materials like HiperCo and VACOFLUX are examples of these strong alloys.
  • Amorphous Alloys: These are special metals, like the kind made by Metglas, that are great for high-frequency motor application. They have very low energy loss.
  • Soft Magnetic Composites (SMCs): These are special powders that are pressed into shape. We can apply a motor lamination coating to these parts to make them work even better.

Built to Last: Preventing Problems in Tough Conditions

Sino’s motor lamination coating solutions are designed and tested very carefully. They are built to last a long time, even with a lot of heat, shaking, and electrical stress.

Type of Problem

What Causes It

What Happens to the Motor

How Sino Prevents It

Damage from Heat

The core or wires get too hot.

The insulation fails. The layers short-circuit. The motor can break completely.

We choose materials that can handle high heat. We use special coatings that help get rid of heat to keep the motor cooler. Our better insulation means less heat is created in the first place.

Breaking from Shaking or Impact

A lot of shaking or hard hits.

The insulation wears off. The motor wastes more energy. You can hear a loud noise.

We use coatings that stick very well. We use flexible coatings that can soak up stress. Our process creates a strong, solid core that resists damage.

Failure from Electrical Stress

Sudden changes in voltage from motor controllers, or power surges.

The layers short-circuit. Certain spots get extremely hot.

We use materials that can handle very high voltage. Our coating process is perfect, with no tiny holes. We check every part to make sure the insulation is perfect.

Work with Sino to Get Ahead

Sino is more than just a company that provides motor lamination coating. We can help with everything your motor parts need. This includes fixing up old laminations and using heat to remove stress. We work with you to understand your needs, whether it’s for a BLDC motor coating, an induction motor lamination, or for renewable energy applications.

Choosing a supplier for your lamination stacks coating is a big decision. It affects how your product is designed, how well it works, and how successful it is. We invite you to talk with our engineering team. Let us look at what you are building, understand your problems, and create a special lamination stack coating solution for you. This will give you a real advantage over your competition.

Contact Sino today. Let us show you how our motor lamination coating can make your motors more powerful, more efficient, and more reliable. We will help you build a better motor, from the core out.