Kayayyakin Injin Ƙarfe na Cast

Ƙarfin simintin gyare-gyare, wanda kuma ake kira nodular iron ko spheroidal graphite (SG) simintin ƙarfe, ba abu ɗaya ba ne amma yana cikin rukuni na kayan da za a iya samar da su don samun nau'i mai yawa ta hanyar sarrafa microstructure. Nodular simintin ƙarfe yana samun graphite nodular ta hanyar spheroidization da inoculation magani, wanda yadda ya kamata inganta inji Properties na simintin ƙarfe, musamman roba da taurin, don samun mafi girma ƙarfi fiye da carbon karfe. Nodular simintin simintin gyare-gyaren simintin ƙarfe ne mai ƙarfi mai ƙarfi. Cikakken kaddarorin sa suna kusa da karfe. Dangane da kyawawan kaddarorin sa, an yi nasarar amfani da ƙarfen ƙarfe don simintin simintin gyare-gyare na ƙarfin ƙarfi, ƙarfi da juriya. Nodular simintin ƙarfe ya ɓullo da sauri zuwa simintin ƙarfe na biyu sai baƙin ƙarfe mai launin toka kuma ana amfani da shi sosai. Abin da ake kira "masanya baƙin ƙarfe da ƙarfe" galibi yana nufin baƙin ƙarfe. Ana amfani da baƙin ƙarfe sau da yawa don samar da sassa na crankshafts da camshafts don motoci, tarakta, da injunan konewa na ciki, da kuma matsakaitan matsa lamba don injuna gabaɗaya.

Halayen ma'anar gama gari na simintin simintin ƙarfe shine siffar graphite. A cikin baƙin ƙarfe ductile, graphite yana cikin nau'i na nodules maimakon flakes kamar yadda yake a cikin baƙin ƙarfe. Siffa mai kaifi na flakes na graphite yana haifar da maƙasudin maida hankali a cikin matrix na ƙarfe da siffar zagaye na nodules ƙasa da haka, don haka hana ƙirƙirar fashe da samar da ingantaccen ductility wanda ke ba da gami da sunansa. Ana samun samuwar nodules ta hanyar ƙara abubuwan nodulizing, yawanci magnesium (bayanin kula da magnesium yana tafasa a 1100 ° C kuma baƙin ƙarfe yana narkewa a 1500 ° C) kuma, ƙasa da yawa yanzu, cerium (yawanci a cikin nau'in Mischmetal). An kuma yi amfani da Tellurium. Yttrium, sau da yawa wani sashi na Misch karfe, an kuma yi nazari a matsayin mai yiwuwa nodulizer.