Graphene-containing cast iron inoculant and preparation method and using method thereof

Abstract

The invention relates to a graphene-containing cast iron inoculant and a preparation method and using method thereof. The invention provides the cast iron inoculant comprising 0.01%-10% by weight of graphene. When used for inoculation, the cast iron inoculant provided by the invention can achieve a better inoculation effect with a smaller addition quantity.

Description

Technical field [0001] The invention relates to an inoculant for cast iron. Specifically, the present invention relates to a cast iron inoculant containing graphene, and a method for preparing and using the cast iron inoculant. Background technique [0002] In the production of gray cast iron, in order to improve the mechanical properties of castings, it is necessary to reduce the content of carbon and silicon. This will form cementite during the solidification of the casting. The cementite has high hardness and brittleness, which reduces the mechanical properties and processing performance. In addition, nodularizing agent and vermicularizing agent are needed in the production of ductile iron and vermicular graphite cast iron, and they all strongly promote the formation of cementite. In order to eliminate the cementite in gray cast iron, ductile cast iron, and vermicular graphite cast iron, it needs to be inoculated, that is, a certain amount of inoculant is added to the molten ...

AI Technical Summary

Problems solved by technology

[0005] 1) The ability of the inoculant to promote graphitization is small, and sometimes the cementite cannot be completely eliminated;

[0006] 2) The amount of inoculant added is large;

[0007] 3) The number of gestation is high;

[0010] 6) Breeding and decline quickly;

[0011] 7) Due to the high Si content of the returned charge, it is not possible to use a large amount of returned charge in the batching

Images