engleski

Metallurgical Coke as Carburizing Material in Foundry

As carburizing materials in foundry a wide assortment of carbon materials are used:graphite, pitch coke, calcinated petroleum coke and also metallurgic coke.It is very important to know some characteristics of recarburisers as its solubility, unwished components, mechanical properties, nitrogen content and of all structural parameters of coke.Although the directgraphite injection(size of particle to 3 mm)in melt metal is the best way in commercial carburizing, cheapermaterials, but also good quality, are used.This paper investigated the properties of metallurgical cokes obtanied from different feedstocks with additives(atmospheric residue and coal tar pitch)after heat treatment up to 1600°C.The obtained results were compared to the data on commercial carburizing material used in foundry, known as "Karbina".

Metallurgical Coke; Carburizing material; Foundry

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