Ferrosilicon Magnesium Cored Wire | Automatic Wire Feed Nodulizer from Zemei Factory

1. Product Overview

Ferrosilicon Magnesium Cored Wire, abbreviated FeSiMg Cored Wire in global casting export contracts, is the dedicated Nodularizing Cored Wire designed exclusively for nodular cast iron manufacturers. Unlike calcium or barium series cored wires which only complete deoxidation and degassing, this Spheroidizing Alloy Wire takes magnesium as core functional element to turn flaky graphite into spherical graphite inside molten iron, which is the irreplaceable core auxiliary for ductile iron pipe, auto crankshaft and heavy machinery ductile castings. As standard Ductile Iron Wire Feed and universal Cast Iron Modifier Wire, it adopts low-carbon thin steel strip outer shell, filled with graded ferrosilicon magnesium alloy powder processed via sealed nitrogen crushing craft, and continuous bilateral cold pressing sealing avoids powder leakage during high-speed automatic wire feeding equipment operation. Zemei's R&D team adjusts magnesium content according to different sulfur levels of raw molten iron, forming multiple standard formulas suitable for low, medium and high sulfur pig iron raw materials. After wire feeding into 1380–1460℃ liquid iron, magnesium element reacts rapidly to form graphite spheroids, while silicon assists grain homogenization, trace rare earth ingredients restrain magnesium fading loss, the effective spheroidizing period can reach 10–16 minutes. This product can be used independently for ladle spheroidization, or matched with silicon-barium cored wire for compound wire feeding to simultaneously finish spheroidization + degassing + grain refinement, cutting ductile iron scrap rate by more than 24%. All finished coils pass filling uniformity and air tightness double inspection before delivery, SGS full-element test reports can be provided to meet overseas foundry audit and customs filing demands. Our dedicated cored wire workshop has independent production lines for FeSiMg wire, supporting customized magnesium proportion, wire diameter and single reel weight.

2. Raw Material & Complete Automated Production Process

The inner filling material of FeSiMg Cored Wire is self-smelted ferrosilicon magnesium alloy ingots. After nitrogen protection crushing, three-layer vibration screening is carried out to remove excessive superfine powder that easily causes leakage during wire feeding. The outer steel belt is controlled within 0.3–0.5mm thickness, featuring moderate melting speed without forming stubborn slag residues to pollute molten iron matrix. The whole production line is equipped with enclosed dust recycling and constant-volume automatic powder conveying equipment, which stabilizes the magnesium-silicon ratio of each batch of core materials and eliminates unstable spheroidization caused by manual batching errors. Standard full production flow: FeSiMg alloy ingot nitrogen sealed crushing → three-stage impurity vibration screening → magnetic separation of oxide impurities → quantitative constant volume powder delivery → steel strip uncoiling U forming → continuous core filling → bilateral cold airtight crimping → fixed wire diameter shaping → automatic reel winding → spheroidization simulation test → anti-moisture film packaging. All flue gas and dust generated in production are treated by circulating purification devices, fully complying with international metallurgical environmental standards. When fed into molten iron, the spheroidizing effective window of this Spheroidizing Alloy Wire lasts 10–16 minutes, effectively solving graphite degeneration and flake reversion problems caused by long ladle waiting time. Standard specification coils are permanently stocked in constant-temperature dry warehouses; full-container sea shipments can be completed within 7–12 working days after receiving prepayment.

3. Fixed Chemical & Custom Wire Specifications

Stable core alloy element range: Si 42–48%, Mg 6–10%, Re 0.8–1.5%, Al ≤1.2%, S ≤0.04%. Three adjustable formulas: low magnesium type for low-sulfur molten iron (S＜0.025%), medium magnesium standard type (S 0.025–0.06%), high magnesium special type for high-sulfur recycled scrap iron (S＞0.06%). Optional outer wire diameters: 9mm, 10mm, 12mm, 13mm. Standard single reel weight: 250kg, 500kg, 1000kg. All reels are fixed on fumigation-free timber pallets with stretch film, multiple desiccant bags are placed inside each pallet to avoid magnesium powder oxidation during long ocean transportation. Each shipment is attached with full English COA test sheet recording magnesium content, filling rate and wire tensile data. Small trial reels starting at 50kg are acceptable, sample expenses can be fully deducted in subsequent bulk orders. Custom items include magnesium content adjustment, wire diameter modification and pallet brand LOGO printing.

5. Global Target Application Fields

This FeSiMg Cored Wire is the core consumable of ductile iron foundries across more than 20 overseas regions, covering four core production lines:

Zemei maintains stable bulk supply to ductile iron groups in Germany, Vietnam, Malaysia, Mexico and other countries, and provides exclusive magnesium formula optimization service for long-term bulk purchasers.

6. Packaging, Logistics & Factory Output

The special FeSiMg cored wire production line has an annual output of 5,000 tons. Standard reels are stored in constant-temperature dry warehouses all year round. Export packaging: single reel wrapped with anti-moisture plastic film, fixed on fumigation-free timber pallets by steel belts. We cooperate with certified international freight forwarders, supporting FOB, CIF, CFR trade terms. Small trial coils can be delivered by air within 4–8 working days, while full containers take 7–12 working days. After container loading, complete stacking photos and videos will be sent to customers for cargo verification and logistics tracking.

7. One-Stop Customization & Full QC System

We provide full-process customized services including magnesium content fine-tuning, wire diameter adjustment and pallet brand printing. The central testing lab is equipped with direct reading spectrometers, wire tensile testers and molten iron spheroidization simulation furnaces. Each reel passes three rounds of inspection: raw core material test, semi-finished sampling, finished airtight and spheroidization performance test. All unqualified products are recycled for re-smelting. SGS third-party sampling inspection is supported before shipment; full English ISO certificates, COA and MSDS documents can be provided for factory audit and customs clearance. Professional metallurgical engineers offer free 24-hour remote guidance on wire feeding dosage and nodular iron defect solutions.

8. FAQ