Ferro Silicon Magnesium

Rare earth magnesium silicon ferro alloy (commonly known as a spheroidizing agent) is one of AON METALS' core products, specifically designed for the production of ductile iron and vermicular graphite cast iron. It is a composite alloy with silicon and iron as the matrix, containing key spheroidizing and alloying elements such as magnesium, rare earth elements, and calcium.

Core Mechanism of Action: In molten iron, magnesium and rare earth elements are strong graphite spheroidizing elements. They effectively neutralize the harmful effects of sulfur and oxygen, promoting radial growth of graphite during solidification to form spheroidal graphite, thus endowing cast iron with excellent mechanical properties of high strength and high toughness. Calcium plays a role in assisting desulfurization and protecting magnesium, improving the stability of the spheroidizing effect.

Why Choose AON's Spheroidizing Agent?

Our products, through precise ingredient ratios and rigorous smelting processes, ensure that each batch has uniform composition, dense structure, and suitable melting point. This guarantees a stable reaction, high magnesium absorption rate, and stable spheroidizing effect during the spheroidizing process, ultimately reducing your overall production costs.

Size specifications: 5~15mm, 3~25mm, 8~40mm, 25~50mm, or customized according to customer requirements.

Packaging: 1-ton woven bags (moisture-proof treatment available), iron drums, or customized according to customer requirements.

Rare earth MgSi alloy is one of the main raw materials in the steel industry

Nodulizing agent, vermicularizing agent and inoculant for cast iron.

Silicon magnesium ferro alloy, also known as magnesium alloy spheroidizing agent, is a good inoculant with high mechanical strength and strong deoxidation and desulfurization effects.

Additives for steelmaking:

Light rare earth magnesium silicon alloy used in the production of nodularizers, creeping agents, and inoculants. It is also used as additives and alloying agents in the production of steel and iron. It is used for refining, deoxidation, denaturation, neutralization of harmful impurities with low melting points (Pb, arsenic, etc.) and solid solution alloying to form new metal compounds to purify steel.

RE magnesium ferro silicon alloy has a wide range of applications in industrial production, mainly used in the production of steel and cast iron, and has obvious benefits in improving product quality. At the same time, MgSiFe alloy also has a good application effect in the deoxidizer and alloying element of aluminum alloy production and steelmaking workshops, and can greatly improve product quality. In some developed countries, it is also used in other fields, such as satellite technology, aviation field and new energy materials, actively promoting the development of the industry. 

Case Study: Solving the Nodularity Decay Problem at a Foundry

Client Challenge: A foundry frequently experienced nodularity decay (reduced and distorted graphite nodules) during the production of large ductile iron castings for wind power projects due to long pouring times. This resulted in substandard mechanical properties and a scrap rate as high as 15%.

Solution: We recommended that the client switch from the commonly used QRMg8HRE3 grade to the more resistant to nodularity decay, QRMg8HRE5. The higher rare earth content of this grade effectively extends the nodularity decay time.

Implementation Results:

Q1: What are the consequences of a damp spheroidizing agent? Can it still be used?

A1: Absolutely do not use a damp spheroidizing agent! The magnesium in the spheroidizing agent is very reactive; when it gets damp, it will react with water to produce magnesium hydroxide and release hydrogen gas. This will lead to:

① A sharp decrease in the effective magnesium content, resulting in spheroidizing failure;

② The gas produced by the reaction will be absorbed by the molten iron, forming casting defects such as porosity and white cast iron;

③ The reaction will be abnormally violent during processing, and may even cause splashing and injury. Please be sure to store it in a dry, ventilated warehouse, and it is best to bake it at 300-400℃ before use.

Q2: How to judge the quality of the spheroidizing treatment?

A2: On the production site, a preliminary judgment can be made quickly by observing the fracture surface of a triangular test piece:

Good spheroidizing: The fracture surface is silvery-gray, the grains are fine and uniform, there is obvious shrinkage porosity in the center, and it produces a tough sound similar to steel when tapped.

Spheroidization Deterioration/Non-Spheroidization: The fracture surface is dark gray or black, with coarse grains, little or no shrinkage porosity in the center, and a crisp sound when tapped.

Final confirmation still requires metallographic microscopy to examine the graphite spheroidization rate.

Q3: What are your lead time and minimum order quantity?

A3: As the source factory, our minimum order quantity is usually one container. The production cycle for standard grades is approximately 7-10 working days. Orders with special custom compositions require an additional 2-3 days for ingredient confirmation. We recommend placing your order in advance to ensure your production schedule runs smoothly.

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