Magnet line equipment • End-to-end
Integrated production line
Equipment for NdPr & NdFeB magnet production in one place.
4FBlock is a Slovenian company providing integrated processing equipment for rare earth metallization and magnet manufacturing – from NdPr metal to sintered and bonded magnet parts – with a single engineering and equipment partner.
NdPr electrowinning furnaces
Strip casting & hydrogenation
Jet milling to ~3.5 µm
Aligning & pressing systems
Sintering furnaces
Inert powder transfer
Bonded magnet compounding (MQ / PPS / PA)
Contact 4FBlock ↗
One-stop shop for on-site installation, integration, and FAT testing.
From NdPr metal to sintered magnet blocks
A continuous, engineered route covering metallization, powder preparation, forming, and heat treatment.
Step 1
NdPr metallization
Electrowinning and metallization furnaces designed for NdPr production and integration with upstream rare earth flows.
Step 2
Strip casting (SC)
SC systems to produce controlled NdFeB flakes that define the base microstructure of your magnets.
Step 3
Hydrogenation & OG
Hydrogenation units to embrittle strip-cast flakes and outgassing (OG) systems to partially remove hydrogen before milling.
Step 4
Jet milling
Fluidized opposite jet milling lines to produce fine NdFeB powders around 3.5 µm particle size.
Step 5
Aligning & pressing
Aligning and pressing systems to shape powders into green magnet blocks under controlled fields and pressure.
Step 6
Sintering & finishing
Sintering systems that transform green blocks into dense, high-performance magnet bodies, ready for downstream machining and coating.
Equipment portfolio
Modular building blocks that can be delivered as a full line or integrated into existing plants.
Upstream
NdPr furnaces & strip casting
- NdPr electrowinning / metallization furnaces.
- Strip casting (SC) systems for NdFeB flakes.
- Interface options to oxide-to-metal preparation routes.
Powder preparation
Hydrogenation, OG & jet milling
- Hydrogenation units to embrittle strip-cast flakes.
- Outgassing (OG) systems to stabilize hydrides.
- Fluidized opposite jet mills & JM lines for ~3.5 µm powders.
Magnet forming
Aligning & pressing systems
- Magnetic alignment for controlled texture.
- Pressing systems for various block sizes.
- Options for integrated field and load control.
Heat treatment
Sintering & atmosphere control
- Sintering furnaces for high-density magnet blocks.
- Configurable temperature profiles and atmospheres.
- Integration with upstream handling systems.
Integration
Custom interfacing & inert transfer
- Mechanical interfaces between each processing step.
- Inert transfer of reactive powders to limit oxidation.
- Line-level control concepts and data connections on request.
Performance
Grain boundary diffusion (GBDP)
- Dy/Tb (HRE) diffusion to boost coercivity with lower HRE usage.
- Integrated diffusion-material handling plus closed-loop process control.
- Standalone module or in-line integration with post-diffusion treatment options.
Bonded magnets & compounding lines
4FBlock designs complete lines for bonded NdFeB magnets – from MQ powders to compounded pellets and molded parts in PPS, PA and other engineering polymers.
MQ powders
Powder selection & handling
- Support for isotropic and anisotropic MQ powder grades.
- Engineering of target loading levels for PPS, PA and other matrices.
- Powder handling solutions to limit oxidation and dust emissions.
Compounding
Twin-screw compounding lines
- Gravimetric feeding of MQ powders and polymer pellets.
- Twin-screw extrusion, devolatilisation and melt filtration.
- Strand or underwater pelletizing for bonded magnet granulates.
Forming
Bonded magnet molding
- Injection, compression or overmolding of bonded magnets.
- Options for in-mold magnetic field alignment where required.
- Cell concepts for automated handling and demagnetisation safety.
Line integration
From powder to finished part
- Interface to MQ powder suppliers and QC laboratories.
- Compounding recipe development and scale-up support.
- Layout and line design tailored to your plant and product mix.
Why work with 4FBlock?
A single partner for the whole magnet process chain, with designs tuned to rare earth realities.
One vendor, full chain
Plan, engineer, and test your metallization, sintered and bonded magnet lines with one equipment provider. We support on-site installation and FAT testing for complete systems.
Built for rare earth environments
Our equipment is designed for handling reactive powders, controlling atmospheres, and maintaining stable quality in continuous production.
Custom interfaces & transfer
We design custom interfaces between process steps and inert transfer of materials, ensuring controlled movement of powders across the full line – including bonded magnet compounding where required.
Contact 4FBlock
Tell us about your NdPr metallization, sintered or bonded magnet plant project. We will help you define the right scope of equipment and integration.
Email
Please contact us if you have further requirements, need custom interfacing between steps, or would like a complete "one-stop" proposal including site and FAT testing.