Tsarin samar da iskar gas yana aiki ta hanyar narkar da ƙarfe da ƙarfe a ƙarƙashin yanayin kariya daga iskar gas ko iskar gas. Ƙarfe mai narkewa yana gudana ƙasa ta cikin wani bututun ruwa mai rufi da bututun jagora, kuma ana tace shi kuma ana karya shi zuwa ɗigon ruwa mai laushi da yawa ta hanyar kwararar iskar gas mai ƙarfi ta cikin bututun. Waɗannan ƙananan ɗigon ruwa suna taurare zuwa ƙwayoyin halitta masu siffar ƙwallo da kuma waɗanda ke ƙarƙashin ƙasa yayin tashi, waɗanda daga nan ake tantance su kuma a raba su don samar da foda na ƙarfe masu girman ƙwayoyin cuta daban-daban.

Fasahar foda ta ƙarfe a halin yanzu ita ce hanyar samarwa da aka fi amfani da ita a fannoni daban-daban.

Gami da aka ƙera ta amfani da ƙarfen foda suna da amfani iri-iri, kamar walda da ƙarfe don masana'antar lantarki, nickel, cobalt, da ƙarfe masu yawan zafin jiki don jiragen sama, gami da ƙarfe masu adana hydrogen da ƙarfe masu maganadisu, da kuma gami da ƙarfe masu aiki, kamar titanium, waɗanda ake amfani da su wajen samar da abubuwa masu amfani.

Matakan aiwatar da samar da foda na ƙarfe sun haɗa da narkewa, atomization, da kuma ƙarfafa ƙarfe masu aiki da ƙarfe. Hanyoyin samar da foda na ƙarfe, kamar rage oxide da atomization na ruwa, suna da iyaka ta hanyar ƙa'idodi na musamman na ingancin foda, kamar yanayin ƙwayoyin cuta, yanayin ƙwayoyin cuta, da tsarkin sinadarai.

Atomization na iskar gas mara aiki, tare da narkewar injin, babban tsari ne na yin foda don samar da foda mai inganci wanda ya cika takamaiman ƙa'idodi na inganci.