Calcium Silicon For Inoculation

Calcium silicon （CaSi） is commonly used as an inoculant in the iron and steel industry.

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Description

Calcium silicon (CaSi) is commonly used as an inoculant in the iron and steel industry. Inoculation refers to the process of introducing small amounts of specific elements into molten metal to promote the formation of desired microstructures and improve the properties of the final product.

Specification

Brand
	Ca	Si	C	AI	P	S
	≥	≤
Ca31Si60	31	55-65	0.8	2.4	0.04	0.06

Ca28Si60	28

When used as an inoculant, calcium silicon serves the following purposes:

Graphite nucleation: Calcium silicon promotes the formation of graphite in cast iron. It provides sites for nucleation, which is the initial formation of graphite particles during solidification.
Graphite modification: Calcium silicon also affects the shape and distribution of graphite particles in cast iron. It can help refine and modify the graphite structure, leading to a more uniform distribution of graphite nodules throughout the matrix.
Grain refinement: Calcium silicon contributes to grain refinement in cast iron. It promotes the formation of fine equiaxed grains, which improves the mechanical properties, including tensile strength and fatigue resistance.

product-450-450

The addition of calcium silicon as an inoculant is typically done during the casting process. The optimal amount of calcium silicon depends on various factors, including the composition of the iron, casting parameters, and desired microstructure and properties of the final product. The goal is to achieve a well-nodularized graphite structure with refined grains for improved performance and quality.