Magnet Manufacturing Services
Alliance LLC group of companies are state-of-the-art magnet manufacturing facilities.
Our suppliers are certified to ISO 9001 or TS 16949 standards.
Sintered Magnet Production Process
Sintered magnet production process involves compacting fine powders at high pressures in an aligning magnetic field, then heating it into a solid shape. The solid “ingot” is rough and must be machined to achieve close tolerances. The complexity of shapes that can be pressed using this process is limited. Neodymium and Samarium cobalt powders are compressed to form magnets by Isostatic pressing, Transverse Field Pressing, or Parallel Compressing.
During Isostatic pressing, the powder is compacted with the same force from all directions. These magnets have the highest possible magnetic values because of the higher density achieved using this technique. During Transverse Field Pressing, tooling is used to compact the powder at right angles to the magnetic flux. These magnets have a weaker field compared to the isostatic pressed ones, but stronger compared to the parallel pressed magnets. During Parallel Compressing, the powder is compacted parallel to the magnetic field.
Casting is used for manufacturing Alnico. The Casting process is similar to the casting of other metals. Parts are formed in sand casts which can be complex.
Compression Bonded Magnet Production Process
Compression Molding is commonly used to make NdFeB magnets using melt spun Nd powders that are epoxy coated. The powders are compacted and then heat cured for the epoxy to perform the binding function. These magnets are typically isotropic.
Injection Molded Magnet Production Process
Neodymium, Samarium Cobalt, and Ferrite Materials can be manufactured by injection molding. Common binders for injection molding are polyamides. The advantage of using this method is the possibility to get a better tolerance directly from the tool with no required heat treatment. The magnets can be produced in complex shapes. They can be combined with other materials for over-molding or insert molding.
Magnetizing Services
We offer magnetizing services for simple and complex pole arrangements.
To make a magnet “magnetic” it must be exposed to a strong external magnetic field. This field reorganizes the magnet’s domain structure and leaves the magnet with a remanent magnetization (Br). If a magnet is isotropic, the remanent magnetization has the same direction as the external field. Meanwhile, an anisotropic magnet can only be magnetized in its anisotropy direction.
Axial and diametrical magnetization can be made in standard inductors, i.e. solenoids. However, radial, multiple pole, or any other complex magnetization has to be done in a specially built magnetization fixture.
Axial Magnetization
Description: Axial Magnetizing. Holding applications, Sensor Applications
Diametric Magnetization
Description: Diametric Magnetizing, Sensor Applications
Radial Uni-pole Magnetization
Description: Uni-pole Radial Magnetizing, Sensor Encoder Applications
Diametric Multi-pole Magnetization
Description: Diametric Multi-pole Magnetizing, Sensor Encoder Applications
Axial Multi-pole Magnetization
Description: Multi-pole Magnetizing, Sensors, Encoder Applications
Multi-pole Magnetization
Description: Multi-pole Magnetizing, Sensors, Encoder Applications
Multi-pole Magnetization
Description: Multi-pole Magnetizing, Sensors, Encoder Applications
Skewed Magnetization
Description: Skewed-pole Magnetizing, Sensors, Encoder Applications
Magnetic Assemblies Manufacturing
Alliance supplies a wide range of magnetic assemblies manufactured in the United States and also from international locations. We produce and direct the manufacturing of magnetic rotor, sensor assemblies, and industrial assemblies, using both magnetic and non-magnetic materials for numerous applications.
- Alternative Energy Power Generation
- Automotive Electric Vehicle Propulsion
- Automotive DC Motor and PM Sensor Systems
- MRI Devices and Medical Instruments
- Industrial DC Motors, Pumps, and Generators
- Sensor Assemblies for ams, iC Haus, Melexis, Infinion, Allegro
- Magnetic Holding, Mounting and Fastening
From simple to complex engineered magnetic assemblies made to print, we can meet your requirements. Contact us now to discuss your project.
Magnetic Assemblies Manufacturing
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Sintered NdFeB Rotor with Retaining Sleeve
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Radial Oriented NdFeB Rotor
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Hot Pressed NdFeB Rotor
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Radial Oriented NdFeB Rotor with Containment Sleeve
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NdFeB Rotor with Containment Sleeve
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Bonded NdFeB Rotor
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Multi Pole NdFeB Arc Rotor
Logistics, Warehousing, Inventory Management, Engineering Support
Logistics
We coordinate ocean, rail and air shipments, from factory to port and onto the final destination. We handle all of the details for import customs, duties and tariffs, so you don’t have to!
Secure Warehousing
Your magnetic parts are stored in our secure warehouses. We offer safety stock and JIT delivery for bulk and blanket orders. You can rest easy, knowing your parts are deliverable within a day or two.
Engineering Support
Our engineers understand magnets. They are more than happy to answer questions. We offer supporting services and even co-develop certain projects. Get in touch!