Products Description
Silicon-magnesium alloy, also known as silicon-iron magnesium alloy and rare earth silicon magnesium alloy, is an important metallurgical alloy mainly used in the casting and smelting industries. It is composed of three elements: silicon, iron and magnesium. It is an excellent spheroidizing agent and has strong deoxidation and desulfurization effects.
Rare earth ferrosilicon magnesium spheroidizing agent is mostly used in the production of ductile iron: after adding silicon ferromagnesium spheroidizing agent to the molten iron treated with inoculant, the flake graphite will agglomerate into spherical graphite and remain undeformed for a long time.
Products Specification
| Brand | Code | Chemical Compositon (%) | |||||
| Mg | Re | Si | Ca | Al | Fe | ||
| FeSiMg6Re1 | 6-1 | 5.0-7.0 | 0.5-1.5 | 38-44 | 2.0-3.0 | <1.0 | Balance |
| FeSiMg7Re1 | 7-1 | 6.0-8.0 | 0.5-1.5 | 38-44 | 1.0-1.5 | <1.0 | |
| FeSiMg5Re2 | 5-2 | 4.0-6.0 | 1.0-3.0 | 38-44 | 2.0-3.0 | <1.0 | |
| FeSiMg7Re3 | 7-3 | 6.0-8.0 | 2.0-4.0 | 38-44 | 2.0-3.5 | <1.0 | |
| FeSiMg8Re3 | 8-3 | 7.0-9.0 | 2.0-4.0 | 38-44 | 2.0-3.5 | <1.0 | |
| FeSiMg8Re5 | 8-5 | 7.0-9.0 | 4.0-6.0 | 38-44 | 2.0-3.5 | <1.0 | |
| FeSiMg8Re7 | 8-7 | 7.0-9.0 | 6.0-8.0 | 38-44 | 2.0-3.5 | <1.0 | |
| FeSiMg10Re7 | 10-7 | 9.0-11.0 | 6.0-8.0 | 38-44 | 2.0-3.5 | <1.0 | |
Standard Size: 0.6-6mm,1-12mm,5-25mm,4-30mm
Packing: 25kg woven plastic bag in 1mt jumbo bag.
Note: Chemical composition, size and packing of above mentioned products can be adjusted according to customer's requirements.
Products Applications
The primary use of Silicon Magnesium is in the production of ductile iron, a type of cast iron where graphite is present as spheroids rather than flakes. This morphology provides greater tensile strength, ductility, and impact resistance, making ductile iron suitable for structural applications like:
Automotive parts (e.g., crankshafts, suspension components)
Pipe fittings and pressure pipes
Valves, pumps, and hydraulic parts
Railway components and heavy machinery
SiMg is added to the melt during the nodularizing process, which typically occurs in the ladle just before casting. Several treatment methods are used:
In-ladle treatment: SiMg is added directly to the ladle, often with a cover of slag or flux to prevent oxidation.
Tundish cover treatment: The alloy is placed in a treatment chamber and covered with a ceramic or sand lid to reduce reactivity and fume generation.
In-mold treatment: SiMg is introduced directly into the mold cavity through inserts, ideal for small batch or specialized castings.
The specific treatment technique depends on factors such as foundry size, product specification, and environmental regulations.
Key Features & Benefits
Dual-Functionality
Combines the deoxidizing power of silicon and the nodularizing effect of magnesium in cast iron/steel.
01
Cost-Efficient
Cheaper than using pure Mg or FeSi separately.
02
Improved Metallurgy
Enhances mechanical properties (ductility, strength) in castings.
03
Low Oxidation Loss
Mg is protected by Si, reducing fuming during steel processing.
04
Competitive Advantages
Vs. Pure Magnesium
Lower cost, safer handling (reduced explosion risk).
Vs. Ferrosilicon + Mg
Simplified logistics, better Mg yield.
Eco-Friendly
Utilizes secondary smelting byproducts (slag-derived Si).
FAQ
Q: Are you a manufacture or trader?
A: We are manufacture.
Q: How are the products' quality?
A: The products will be strictly inspected before shipment, so the quality could be guaranteed.
Q: How about your company's certification?
A: ISO9001 and Test Report.
Q: What's the MOQ of trial order?
A: No limit,We can offer the best suggestions and solutions according to your condition.
Q: How long is delivery time?
A: The delivery time will be determined according to the quantity of the order.
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