Yawancin sassan jan karfe da aka yi ana cika su a cikin ramin ƙira ta hanyar ƙaramin sauri ko babban simintin ƙarfe tare da ƙarfe na ruwa. Samfurin yana da farfajiyar rami mai motsi. A lokacin sanyaya ƙarfe na ruwa, ƙirƙira matsin lamba ba kawai zai iya kawar da lahani na raguwa na blank ba, har ma ya sa tsarin ciki na blank ya kai ga fashe hatsi a cikin ƙirƙira jihar. Ana amfani da hanyoyin gama gari na ƙasa don jefa sassan jan karfe:

1. Don yin simintin simintin ƙarfe na ƙarfe, ana amfani da simintin gyare-gyaren ƙarfe na yau da kullun don haɓaka ƙarfi na gami, wanda ke taka muhimmiyar rawa wajen haɓaka ingancin simintin gyare-gyare da rage lahanin simintin. Simintin gyare-gyare na ƙarfe na iya tace hatsi, rage pores, da inganta kayan aikin injiniya da ƙarancin iska na gami. Don gami da babban abun ciki na gubar irin su tagulla na gubar, yin amfani da simintin gyare-gyaren ƙarfe na iya hana rarrabuwar ɓangarorin.Saboda gaskiyar yawancin sassan cylindrical a cikin simintin ƙarfe na ƙarfe na ƙarfe, hanyar simintin centrifugal ya fi amfani.

2. Centrifugal simintin gyare-gyare shine fasaha da hanyar yin allurar karfen ruwa a cikin injin jujjuyawa mai sauri don yin centrifugal karfen ruwa don cika gyaggyarawa da samar da simintin. Tare da motsi na centrifugal, ƙarfe na ruwa zai iya cika ƙirar da kyau a cikin radial shugabanci kuma ya samar da filin kyauta na simintin gyaran kafa; Za a iya samun ramukan ciki na cylindrical ba tare da kullun ba; Yana taimakawa wajen kawar da iskar gas da abubuwan waje a cikin karafa na ruwa; Shafi tsarin crystallization na ƙarfe, don haka ingantattun kayan aikin injiniya da na zahiri na simintin gyare-gyare.

Dangane da hanyoyin yin simintin gyare-gyare, baya ga simintin yashi, ana kuma iya amfani da simintin ƙaramin matsi don manyan kayan aikin hannu na simintin tagulla don haɓaka ƙaƙƙarfan gami da rage ƙazanta na waje da ake samarwa a cikin aikin simintin.