Isibalo sokwengezwa kwezinto ezilungisiwe zensimbi encibilikisiwe esithandweni sokuncibilika esingeniswayo:

gt=Gz(Xa-Xb)/Cd(kg)

gt-Yengeza inani le-ejenti ekhuphukayo engu-C noma amanye ama-alloys (kg)

Gz-Ingqikithi yesisindo sensimbi encibilikisiwe esithandweni (kg)

Inani elihlosiwe lika-Xa lokubunjwa kwensimbi encibilikisiwe (%)

Xb-Inani lokuhlaziya lokubunjwa kwensimbi encibilikisiwe esithandweni (%)

I-ejenti ekhulayo ye-CC noma okunye okuqukethwe kwe-alloy (%)

I-d-Isilinganiso sokumuncwa kwezithako ezisebenzayo (100% ngu-1)

Insimbi encibilikisiwe C kanye ne-SI yeqa ukwakheka okuqondiwe, engeza izilahliwe ukuze unciphise u-C, ukubala kwe-SI gt=Gz(Xb-Xa)/b

b-okuqukethwe kwe-elementi elungisiwe ku-scrap

Idatha ye-empirical ithi: engeza 34kg scrap iron/t, wehlise ngo-0.1% C futhi wehlise ngo-0.05% Si