Ferro Silicon Magnesium 15-25mm

Ferro silicon magnesium is also called rare earth ferro silicon magnesium alloy and spheroidizer. Rare earth fesimg alloy mainly consists of magnesium, silicon, iron and rare earth elements. The magnesium content is generally above 50%, the silicon content is between 25 and 35%, the iron content is between 10 and 20%, and the rare earth content will also vary. As a spheroidizer used in cast iron, it can change the strip-shaped "iron-carbon crystals" into "spherical" and become "ductile iron", which greatly improves the processing performance and mechanical properties of cast iron. Desulfurizer and deoxidizer in steel production.

① Automotive Ductile Iron Castings (Largest Demand)

QRMg8HRE3 / QRMg8HRE5 15–25mm FeSiMg for engine crankshafts, wheel hubs, connecting rods, suspension brackets; improve casting elongation and fatigue resistance.

② Municipal Ductile Iron Pipe Fittings

High rare earth QRMg8HRE7 grade for thick-wall pipeline castings, solve graphite fading caused by long pouring waiting time.

③ Wind Power & Heavy Machinery Castings

QRMg10HRE7 for large wind power spindle, gear box housings, adapt high-sulfur recycled molten iron.

④ Thin-Wall Precision Ductile Iron Parts

Low rare earth QRMg7HRE2 for new energy auto thin-wall structural castings, avoid surface chill defects.

⑤ Cored Wire Raw Material (0-1mm fine powder matching)

We support customized fine particle FeSiMg as filling material for spheroidizing cored wire, realize deep ladle automatic feeding.

Moderate Dissolution Speed: Avoid ultra-fine powder violent splashing & magnesium burning loss;

Perfect Ladle Sandwich Matching: Uniform particle layer, stable magnesium absorption rate (82–88%);

Low Dust Pollution: No flying dust during feeding, improve workshop environment;

Convenient Manual/Auto Batching: Easy weighing without screen blockage;

Stable Spheroidization Consistency: Uniform particle reaction, less fluctuation of nodularity rate between batches.

Q1: Why choose 15-25mm FeSiMg instead of fine powder for ladle sandwich process?

A: Fine powder causes severe magnesium burning loss; 15–25mm lump dissolves evenly, magnesium recovery rate increases by 10–15%, lower production cost.

Q2: Which FeSiMg grade for thick-wall ductile iron castings?

A: Select high rare earth QRMg8HRE7 or QRMg10HRE7 to prevent graphite spheroidization fading.

Q3: What is standard addition dosage of 15-25mm FeSiMg?

A: 1.0–1.4% of molten iron total weight, adjust according original sulfur content of molten iron.

Q4: Do you provide free test samples & delivery cycle?

A: Free 1–5kg casting test samples available. Standard in-stock goods:7–15 working days; customized high Re grades:20–30 working days, MOQ 25 tons full container, T/T & L/C payment supported.

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