What is Ferro Silicon Magnesium Nodulizer?

Ferro silicon magnesium, also known as FeSiMg alloy, is a remelting alloy made up of Ferro silicon, Magnesium, rare earth, and Calcium.
As an additive, it can crystallize the graphite in cast iron into a ball shape. Its’ main elements are Si, Mg, Re, Ca, etc. The silicon magnesium alloys containing rare earth elements are divided into ordinary rare earth nodularizer and yttrium base heavy rare earth nodularizer.

Ferro Silicon Magnesium is a kind of good nodulizer, sometimes it also contains Rare Earth element, with strong mechanical strength, the effect of deoxidization and desulfurization is strong. It’s widely used in the metallurgic industry. It is one of the most important additives in the production process of spheroidal graphite iron.

The invention of ferro silicon magnesium is one of the most important milestone in nodular cast iron production history. It helps graphitization of the cast iron. Spheroidized graphite will make its strength far better than gray cast iron, meanwhile its toughness better than malleable cast iron, and keep other properties same with gray pig iron at the same time. Those advantages come from several nodulizing elements including Mg, Ce, Ca etc.  

Started from Cerium nodulizer at earliest time,but then people realized that Cerium is very hard to obtain, and it has strict requirement to melted steel. Then Mg spheroidizing agent was found, and evolved from Mg-Ni Alloy, Mg-Cu Alloy, and finally to FeSiMg Alloy Nodulizer.  Ferro Silicon Magnesium is easy for mass production, and as nodulizing agent, it expanded the production of Ductile Iron.

Ferro Silicon Magnesium Uses

★ Deoxidizer for steelmaking.
★ Inoculant and Nodulizer for cast iron.
★ Alloying agent.

Application :
Nodulisation is a process of controlling the structure and properties by changing the graphite shape from flakes to spheroidal in cast iron during solidification. A noduliser is a material which contains spheroidal graphite forming elements such as Mg, Ce, Ca, Ba, etc.

HONGSHUN supplies FeSiMg containing Ce which acts as a combination of these elements. A certain quantity of Magnesium in solution in the base metal is necessary to obtain the graphite is spheroidal form. On the other hand silicon which is the primary graphitising element prevents carbide formation and controls the release of Mg.
HONGSHUN has two types of nodulisers which is used in foundry for the production of nodular cast iron (Ductile Iron)
FeSiMg(5.0-5.50;5.50-6.00 and 9.5-10.0 Mg content)