What are the applications of steelmaking inoculants? Let's take a look:

The incubation treatment of casting molds is a commonly used operation method for refining casting grains in casting production. Before pouring, a certain amount of inoculant is added to the liquid alloy under certain conditions, which can change the solidification process of the steelmaking alloy and improve the crystallization structure, so as to achieve the purpose of updating the performance of iterative castings. The incubation treatment of smelting molds is used in cast steel, cast iron and smelting non-ferroalloys. For example, steel before crystallization to add a small amount of aluminum, grain refinement of the cast steel, ordinary gray cast iron graphite and matrix structure are relatively large, after the addition of inoculant, can make the use of a large number of uniformly distributed crystal nuclei in the molten iron at the same time, to obtain both fine and uniform graphite, and refine the matrix, thereby improving the strength of gray cast iron; In some cases, the added inoculant can be a mechanical obstacle to the use of application, they are adsorbed on the surface of the crystal nucleus, hinder the growth of the crystal nucleus, but also play a role in refining the grain, such as aluminum-silicon alloy before the addition of a small amount of sodium salt (mass fraction of 0.01% ~ 0.1%), can make the aluminum-silicon alloy casting strength double, elongation increased by nearly three times.

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