Kashe karfeKarfe da yawa an rage shi gaba ɗaya na wani ɗan wakili gaba ɗaya kafin a jefa shi wannan wanda babu wani matsala ta gas lokacin amincewa. An san shi ta hanyar babban digiri na sinadarai da 'yanci daga pathosities na gas.

Semi-kashe karfe shine galibi deoxidized karfe, amma carbon monoxide bar torohole sypechole da aka rarraba a cikin hadari. Matsayin mamaki yana kawar da bututun da aka samo a ƙarfe da ƙara yawan amfanin ƙasa zuwa kusan 90% ta nauyi. Semi-kashe Karfe ana amfani dashi don tsarin ƙarfe tare da abun ciki na carbon tsakanin 0.15 da carbon Carbon, saboda an yi birgima Carbon.

Rimmed karfe, kuma ana kiranta da zane mai ƙimar ƙarfe, ba shi da ɗan ƙaramin wakili da aka ƙara a gare shi yayin jefa shi wanda ke haifar da carbon monoxide don canjin carbon. Wannan yana haifar da ƙananan ƙarfin ramuka a cikin farfajiya waɗanda daga baya ke rufe da tsari mai zafi. Mafi yawan ƙwayar ƙarfe yana da abun ciki na carbon a ƙasa 0.25%, wani abun ciki na manganese a ƙasa 0.6%, kuma ba a yaba da ba daidai ba na abubuwa masu zafi ba a ba da shawarar don aikace-aikacen aiki ba.