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Silicon Carbide Abrasive Applied in Metallurgy Field

Silicon carbide abrasive is widely used in the metallurgy field due to its stable chemical properties and high fusing point. iAbrasive will introduce how silicon carbide abrasive is used in the metallurgy industry.

From: iAbrasive.comDate: 2014-09-17 02:29:39Views: 422

silicon carbide

Silicon carbide abrasive is widely used in the metallurgy field due to its stable chemical properties and high fusing point. However, most people simply know only a tip of the iceberg. iAbrasive will introduce how silicon carbide abrasive is used in the metallurgy industry.

The types and contents of silicon carbide abrasive vary. If it is used in casting, the Sic content had better reach 90% or so; the high purity material is of high hardness and a high melting point. The low pure materials may have too many impurities. If used in an electric furnace, the particles should be finer, being 0.5mm to 3mm; in this way, they are easy to melt and absorb. If it is used in a cupola, it is better to make the silicon carbide in a big block in case it is rushed out by the strong stream. Under high temperature, silicon carbide abrasive will decompose into carbon and silicon ions, whose chemical property is to react with the oxygen first, so it can reduce the hot metal’s oxidation, after which they become the crystallization nuclei. As silicon and carbon have a strong inoculation effect, they are helpful in electric furnace and low carbon silicon melting.

According to relevant personnel, silicon carbide abrasive has larger application fields in foreign countries since its melting point is very high at around 2700°. In the ordinary casting furnaces, no such high temperature is possible, under which the silicon carbide abrasive will gradually decompose and diffuse. Usually when the materials are dissolved by one-third or a half, and the temperature is high enough, the silicon carbide abrasive has time to break down.

Author: Liwei Chu 
Copyright: iAbrasive.com--Abrasives & Diamond Tools Market

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