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Hard magnetic compound (Bonded magnet compound)
Magnet material for injection molding by mixing magnetic material and thermoplastic resin. It can be used for complex shapes, two-color molding, and insert molding.
Advantages of plastic magnets (bonded magnets)
One of our main products is magnetic materials that can be injection molded, called “plastic magnets” or “bond magnets.
Compared to sintered magnets, it has the following advantages
Flexibility of shape
Injection molding and extrusion molding are possible, enabling products with complex shapes. Compared to sintered magnets, these magnets are less prone to cracking and chipping, and require no post-processing due to their high dimensional accuracy.
Flexibility in magnetic circuit design
It is possible to realize a magnetic circuit with multiple poles and sinusoidal waveforms. Smoother and more precise magnetic force waveforms contribute to reduction of cogging in motors and improvement of sensor accuracy.
Cost reduction
Since it can be integrally molded or insert-molded, it contributes to omission of bonding and laminating processes, downsizing, and weight reduction.
Plastic Magnet (Bonded Magnet) Material
Ferrite
Ferrite based injection molding materials
Our ferrite compounds use strontium ferrite magnetic powder. It is highly versatile and widely used in various industries due to its excellent cost performance, high corrosion resistance, and resistance to demagnetization at high temperatures.
Features
1. Product lineup with a wide range of magnetic and mechanical properties (BHmax 1.0 to 2.5 MGOe)
2. PA6, PA12, PPS, and EEA-based materials can be selected according to the operating environment
3. Extensive lineup of PPS-based materials with excellent heat resistance, water resistance, chemical resistance, etc.
4. Materials with properties not found in existing product lines can be newly developed
NdFeB (isotropic)
Neodymium-based (isotropic) materials for injection molding
This rare-earth compound is made of magnetic powder mainly composed of neodymium, iron, and boron (Nd-Fe-B). It has several times stronger magnetic force than ferrite materials, contributing to smaller, lighter parts and higher functionality. In addition, because it is an isotropic material, it does not require special molds and offers a high degree of freedom in the design of magnetic force patterns.
Features
1. Product lineup with a wide range of magnetic and mechanical properties (BHmax 2.5 to 10.0 MGOe)
2. PA12 and PPS-based materials can be selected according to the operating environment
3. Materials compatible with hot runner systems can be selected
4. Materials with properties not available in existing product lines can be newly developed
NdFeB (anisotropic)
Neodymium-based (anisotropic) materials for injection molding
A rare-earth compound made of magnetic powder mainly composed of neodymium, iron, and boron (Nd-Fe-B). This material has the highest class of magnetic force among plastic magnets.
Features
1. Product lineup with a wide range of magnetic and mechanical properties（BHmax 6.0 ～17.0MGOe）
2. PA12 and PPS-based materials can be selected according to the operating environment
3. Materials compatible with hot runner systems can be selected
4. Materials with properties not available in existing product lines can be newly developed
Samarium cobalt (SmCo)
Samarium cobalt-based (isotropic) materials for injection molding
This is a rare earth compound made mainly from samarium cobalt (SmCo). It has excellent corrosion resistance, thermal demagnetization resistance, and little change in magnetic force due to temperature, making it suitable for use in high-temperature environments and for applications requiring temperature stability.
Features
1. Product lineup with a wide range of magnetic and mechanical properties（BHmax 4.5 ～11.0MGOe）
2. PA12 and PPS-based materials can be selected according to the operating environment
3. Materials with properties not available in existing product lines can be newly developed
Hybrid (NdFeB + Fe)
Hybrid (neodymium + ferrite) materials for injection molding
Hybrid materials that mix neodymium and ferrite magnetic powders have the same magnetic force as ferrite sintered magnets, but at a leasbnal cost compared to 100% rare earth compounds.
Features
1. Product lineup with a wide range of magnetic and mechanical properties（BHmax 2.5 ～5.0MGOe）
2. PA12 and PPS-based materials can be selected according to the operating environment
3. Materials with properties not available in existing product lines can be newly developed