Spheroidizing Cored Wire – FeSiMg Alloy for Ductile Iron Nodularization (Mg 5-30%, RE/Ca)
Advanced nodularizer wire for consistent graphite spheroidization in ductile iron production. Deep injection ensures high Mg recovery, low fading, and minimal dross. Available in Ø9mm, Ø13mm with custom Mg content.
| Core Composition | FeSiMg (Mg 5-30%, Ca 1-3%, RE 0.5-2%, Si 40-55%) – high-purity magnesium alloys |
| Wire Specifications | Diameter: Ø13mm ±0.5mm; Sheath: Low-carbon steel; Core weight: 350-480 g/m (Ø13mm) |
| Application | Primary spheroidizing treatment of ductile iron, compacted graphite iron (CGI), in-mold process |
| Standard | ISO 1083, ASTM A536, EN 1563 |
Spheroidizing Cored Wire – Product Overview
Our spheroidizing cored wire is engineered for the nodularization (spheroidizing) treatment of ductile iron. The core consists of FeSiMg alloy with carefully balanced calcium and rare earths to ensure complete desulfurization and graphite nodule formation. The cored wire method allows injection deep into the melt, maximizing magnesium recovery and reducing fading compared to traditional sandwich or tundish cover methods.
Product Core Advantages
- High Mg Recovery: Deep injection minimizes Mg vaporization; typical recovery 45-65%.
- Consistent Nodularity: Uniform Mg distribution ensures >90% nodularity even in heavy sections.
- Reduced Dross & Inclusions: Clean alloy and controlled addition minimize slag formation.
- Low Fading: Precise timing of addition reduces Mg loss before casting.
- Custom Mg Content: From 5% (for safe handling) to 30% (for high-efficiency).
Typical Application Areas
- Ductile Iron Foundries: Primary spheroidizing treatment in ladle or autopour.
- Compacted Graphite Iron (CGI): Lower Mg additions for vermicular graphite.
- In-mold Process: Wire fed directly into mold cavity for near-net shape castings.
- High-Sulfur Base Iron: Combined with desulfurization steps.
For process optimization, consult our foundry specialists.
Technical Specifications – Spheroidizing Cored Wire
We offer a range of FeSiMg alloys with varying Mg content to suit different base sulfur levels and casting requirements.
Cored Wire Parameters
| Parameter | Ø13mm Wire |
|---|---|
| Diameter (mm) | 13.0 ±0.5 |
| Sheath Thickness (mm) | 0.35-0.45 |
| Core Weight (g/m) | 180-260 (customizable) |
| Total Weight (g/m) | ~280-380 |
| Mg Content in Core | 5% – 30% (select grade) |
Core Alloy Chemical Composition (Typical Grades)
| Grade | Mg (%) | Si (%) | Ca (%) | RE (%) | Al (%) | Fe |
|---|---|---|---|---|---|---|
| FeSiMg6RE1 (low Mg) | 5.5-6.5 | 44-48 | 1.5-2.5 | 0.8-1.5 | ≤0.5 | Bal |
| FeSiMg8RE2 | 7.5-8.5 | 44-48 | 1.5-2.5 | 1.5-2.2 | ≤0.5 | Bal |
| FeSiMg15 | 14-16 | 40-45 | 1.0-2.0 | – | ≤0.8 | Bal |
| FeSiMg30 (high Mg) | 28-32 | 35-40 | 1.0-2.0 | – | ≤1.0 | Bal |
Available Nodulizer Systems
- Standard FeSiMg6: For general ductile iron (base S <0.02%)
- FeSiMg8-10 with RE: For higher S or heavy sections
- High Mg (15-30%): For high-efficiency, low addition rates
- Custom: Ni-Mg, Cu-Mg available for alloyed irons
Application Guidelines – Spheroidizing Cored Wire
Primary Spheroidizing Treatment
Wire is fed into the ladle after pre-desulfurization (if needed). Injection depth: 300-500 mm below slag. Feeding speed: 2-5 m/s. Addition rate calculated based on target residual Mg (typically 0.03-0.06%).
Compacted Graphite Iron (CGI) Production
For CGI, use lower Mg content (FeSiMg3-5) and precise feeding to achieve vermicular graphite (residual Mg 0.008-0.015%).
Feeding Parameters
- Wire Speed: 2-6 m/s (120-360 m/min)
- Injection Depth: 300-500 mm (avoid slag layer)
- Temperature: 1450-1550°C for treatment; minimal delay before casting.
- Post-treatment: Inoculation wire may follow for nodule count enhancement.
Packaging & Logistics – Spheroidizing Cored Wire
Packaging Options
- Spools: Heavy-duty steel spools, 1000-1800 kg per spool.
- Coils: Ribbon-wound coils for automatic feeding (pay-off from top).
- Protection: Moisture-proof + anti-oxidation coating on request.
- Custom: Spool inner diameter can be adjusted for dereelers.
Logistics Information
| Parameter | Details |
|---|---|
| Minimum Order Quantity | 10 metric tons (trial quantities possible) |
| Lead Time | 12-18 days after order confirmation |
| Port of Loading | Tianjin, Shanghai, Qingdao (China) |
| Shipping Options | FOB, CIF, CFR, DAP |
| Payment Terms | T/T, L/C at sight |
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Frequently Asked Questions – Spheroidizing Cored Wire
What Mg recovery can I expect with this wire?
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Recovery typically ranges from 45% to 65% depending on temperature, sulfur content, and injection practice. We help you optimize parameters for your foundry.
Which Mg content is best for my base iron (S=0.012%)?
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For low S (<0.015%), FeSiMg6 or FeSiMg8 with RE is commonly used. Higher S may require higher Mg or pre-desulfurization.
Can I use the same wire for in-mold and ladle treatment?
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Yes, but feeding speed and Mg content may need adjustment. In-mold typically uses lower Mg wire to avoid over-treatment.
Is it possible to entrust a third-party inspection to check the quality before shipment?
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Certainly, we support third-party inspections by internationally recognized quality inspection agencies such as SGS and BV to verify product quality before shipment. The inspection covers product appearance, weighing, dimensions, and chemical composition analysis. The entire inspection process will be documented with photos and written records, which will be provided to you together with the final inspection report. This ensures you have no concerns regarding product quality.
Do you provide analysis for each coil?
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Absolutely. Every spool includes a certificate of analysis with exact Mg, Si, Ca, RE values.
What is the recommended storage for Mg-rich wire?
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Store in a dry, cool place. Use within 3 months. For longer shelf life, consider vacuum-sealed packaging.
Why Choose Our Coredwire
20+ Years Experience
Specialized in ferroalloy production with deep industry knowledge
Strict Quality Control
Every batch tested to ensure consistent composition and performance
Global Delivery
Reliable logistics network ensuring timely delivery worldwide
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