Magnetic Drive Iron Rods
Zero-Leakage Certified · High Permeability · Custom Magnetization
Electromagnetic Material Engineering
Precision-engineered for hermetic drive systems, our rods utilize vacuum induction melting (VIM) to achieve ultra-low eddy current losses, meeting IEC 60404-8 Class C21 magnetic performance requirements.
Magnetic Alloy Composition :
| Element | Beilun Spec | Commercial Grade |
|---|---|---|
| Fe | 99.2% | 98.5% |
| Co | 0.8-1.2% | 0.1-0.3% |
| V | 0.05-0.12% | - |
| C | ≤0.005% | ≤0.03% |
| Residual Stress | <8MPa | 20-35MPa |
Critical Application Scenarios
Chemical Processing
Sealless pump drive shafts (ATEX Zone 1)
Reactor stirrer magnetic couplings
Valve actuator cores
Food & Pharma
Aseptic homogenizer drives (3-A Sanitary compliant)
CIP/SIP-ready mixer shafts
Hygienic conveyor magnetic rollers
Energy Systems
Wind turbine pitch control drives
LNG pump containment sleeves
Hydrogen compressor isolators
Magnetic Performance Certification
△ Electromagnetic Properties
Saturation Flux Density: 1.75-1.82T
Coercivity: ≤80 A/m
Permeability (1kHz): 3,500-4,200 μ/μ₀
△ Structural Integrity
Diameter: 10-150mm (±0.1mm)
Surface Hardness: HRC 28-32
Runout Tolerance: ≤0.03mm/m
△ Industry Compliance
ISO 21018:2017 (Particle Count Class 14/11)
FDA 21 CFR 177.2600 (Food Contact)
EN 13445 Pressure Equipment Directive
Electromagnetic Benchmarking
| Parameter | Beilun Grade | Standard Grade |
|---|---|---|
| Core Loss (1T/400Hz) | 12 W/kg | 22 W/kg |
| Curie Temperature | 750°C | 680°C |
| Resistivity | 45 μΩ·cm | 25 μΩ·cm |
| Magnetostriction | 3 ppm | 8 ppm |
Custom Magnetization Services
Stage 1: Magnetic Design
FEA-based flux path optimization
Demagnetization curve modeling
Stage 2: Processing
Isotropic annealing (H₂ atmosphere)
Multi-pole magnetization (up to 16 poles)
Stage 3: Validation
BH curve testing (per IEC 60404-2)
Residual field mapping
Technical Documentation
Material Magnetic Property Sheets
Eddy Current Testing (ET) Reports
Non-Destructive Testing (MT/UT) Certificates
Chemical Compatibility Charts
Magnetic Drive Q&A
Q: Maximum operating temperature without flux loss?
A: 450°C with <5% flux degradation
Q: Surface finish for FDA-grade applications?
A: Electropolished to Ra ≤0.5µm + Passivation
Q: Custom magnetization pattern options?
A: Radial, Halbach, or Custom Sector designs
Q: Lead time for multi-pole magnetization?
A: 4-5 weeks including full magnetic mapping
Why Beilun Magnetic Solutions?
✓ 15+ Years in Sealless Drive Manufacturing
✓ Class 100 Cleanroom Assembly Cells
✓ In-house B-H Curve Testing Lab
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