Ƙarfe na simintin simintin gyare-gyare na gabaɗaya ne na gawa na tushen ƙarfe da ake amfani da su don samar da simintin gyare-gyare waɗanda ba sa samun canjin eutectic yayin ƙarfafawa. Nau'in simintin gyare-gyare. Babban abubuwan haɗakarwa na simintin ƙarfe sune ƙarfe da carbon a matsayin manyan abubuwan, kuma abun cikin carbon shine 0-2%. An ƙara rarraba ƙarfen simintin zuwa kashi uku: simintin ƙarfe na carbon, jefa ƙarancin gami da ƙarafa na musamman.
1. Kasuwar carbon karfe. Jifa karfe tare da carbon a matsayin babban abin haɗawa da ƙananan adadin sauran abubuwa. Fitar da ƙananan ƙarfe na carbon tare da abun ciki na carbon ƙasa da 0.2%, jefa matsakaicin ƙarfe na carbon tare da abun ciki na carbon na 0.2% zuwa 0.5%, da jefa babban ƙarfe na carbon tare da abun cikin carbon sama da 0.5%. Tare da karuwar abun ciki na carbon, ƙarfi da taurin simintin carbon karfe yana ƙaruwa. Cast carbon karfe yana da babban ƙarfi, filastik da tauri, da ƙarancin farashi. Ana amfani da shi a cikin injuna masu nauyi don kera sassan da ke ɗaukar nauyi mai nauyi, irin su mitsiyoyin niƙa, sansanonin latsa ruwa na ruwa, da dai sauransu. Sassan da su ma abin ya shafa kamar su bolsters, firam ɗin gefe, ƙafafu da ma'aurata.
2. Zuba ƙananan ƙarfe ƙarfe. Cast karfe mai dauke da abubuwa masu hadewa kamar manganese, chromium, da jan karfe. Jimlar adadin abubuwan haɗakarwa gabaɗaya ƙasa da 5%, wanda ke da tasiri mafi ƙarfi da ingantaccen kaddarorin injin ta hanyar magani mai zafi. Simintin ƙananan ƙarfe na ƙarfe yana da mafi kyawun aiki fiye da ƙarfe na carbon, wanda zai iya rage ingancin sassa kuma inganta rayuwar sabis.
3. Zuba karfe na musamman. Ƙarfin simintin gyare-gyaren da aka yi don biyan buƙatu na musamman yana da nau'i-nau'i iri-iri, yawanci yana ƙunshe da abubuwa masu girma ɗaya ko fiye don samun wasu kaddarorin musamman. Misali, babban ƙarfe na manganese mai ɗauke da 11% zuwa 14% manganese yana da juriya ga lalacewa kuma galibi ana amfani dashi don jurewa sassan injin ma'adinai da injin gini; daban-daban bakin karfe tare da chromium ko chromium-nickel kamar yadda babban alloying abubuwa da ake amfani da lalata ko 650 Parts da aiki a karkashin high zafin jiki yanayi sama ℃, kamar sinadaran bawul jikin, famfo, kwantena ko turbi casings na manyan-ikon wutar lantarki shuke-shuke.
