Product Description
Rare earth magnesium ferrosilicon alloy is a casting additive composed of ferrosilicon as the matrix, combined with magnesium and rare earth elements, and supplemented with calcium and other elements. Its primary function is to promote the spheroidal precipitation of graphite in molten iron, significantly enhancing the strength and toughness of ductile iron.
Core Composition
Matrix and Major Components
Silicon (Si) content is 40–50%, with iron (Fe) making up the remainder, forming the alloy's framework and improving fluidity.
Core Spheroidizing Elements
Magnesium (Mg) content is 4–8% (common grades include 3–8% and 5–8%, etc.).
Rare Earths and Auxiliary Elements
Rare earths (RE, primarily cerium (Ce) and lanthanum (La)) account for 1–3% and are used to neutralize anti-spheroidizing impurities such as lead and bismuth. Calcium (Ca) accounts for 1–3% and aids in deoxidation and desulfurization, stabilizes the reaction, and reduces spatter.
Physical Form
Dense, gray-black alloy lumps; common particle sizes are 5–25 mm and 5–30 mm, with custom sizes available upon request.
Standards
GB/T 4138-2004.
Core Uses and Applications
Core Functions:
Converts flake graphite in gray cast iron into spheroidal graphite, increasing tensile strength by more than 50% and impact toughness by 10–20 times. It also deoxidizes, desulfurizes, purifies molten iron, and inhibits spheroidization decay.
Application Areas:
1. Automotive and Transportation: Critical structural components such as crankshafts, wheel hubs, brake discs, and axle housings, which require high toughness and fatigue strength.
2. Wind Power and Energy: Wind turbine hubs, bases, and nuclear power cast iron components, addressing section effects in thick, large cross-sections and ensuring uniform internal spheroidization.
3. Municipal and Piping: Ductile iron pipes, manhole covers, and valves, offering corrosion and wear resistance with high cost-effectiveness.
4. Heavy Machinery: Machine tool beds, hydraulic components, and construction machinery housings, balancing strength with vibration damping.
Company Advantages
Juxin Ferroalloy Company possesses a comprehensive production system and quality inspection process. We implement full-process quality control from raw material intake and smelting through to finished product shipment, ensuring every batch meets national standards and customer requirements. Additionally, leveraging stable raw material supply channels and the advantages of large-scale production, we guarantee a continuous and stable supply of products to meet customers' needs for high-volume, regular procurement. Please contact us for detailed product information and pricing.
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