Maganin maganin bututun bakin karfe

Bututun bakin karfe yanzu ana amfani da shi sosai, saboda kyakkyawan juriyarsa ta lalata ya taka muhimmiyar rawa a cikin ginin injiniya, a cikin tsarin samarwa muna buƙatar mafita mai ƙarfi don sarrafa bututun bakin karfe, babban manufar shine samun wasu martensite don ƙara taurin samfuran, bari mu kalli mafita na sarrafa bututun bakin karfe:

(1) Bayan an yi maganin maganin, ana dumama shi zuwa (760±15) ℃, kuma yawan sinadarin carbon da sinadarai masu hade a cikin bututun ƙarfe mai launin austenitic 904L zai ragu saboda ruwan carbide na Cr23C6 daga bututun ƙarfe mai launin austenitic 904L na tsawon mintuna 90, don haka ana ɗaga ma'aunin Ms zuwa 70℃ sannan a sanyaya zuwa zafin ɗaki don samun tsarin martensite + αferrite + residential austenitic. An lalata ragowar austenite ta hanyar tsufa a 510℃.

(2) bayan an daidaita yanayin zafi mai yawa da kuma maganin cryogenic, an fara dumama maganin zuwa 950℃ sannan aka riƙe shi na tsawon minti 90. Saboda ƙaruwar Ms point, ana iya samun ƙaramin adadin martensite bayan sanyaya zuwa zafin ɗaki. Bayan haka, ana iya samun wani adadin martensite kafin a yi masa maganin sanyi -70℃ sannan a riƙe shi na tsawon awanni 8.

(3) Bayan maganin maganin ta hanyar hanyar nakasawa ta sanyi, martensite da aka samar ta hanyar bututun 904L mara sumul ya lalace a yanayin zafi na ɗaki. Adadin martensite da aka samar ta hanyar bututun 904L mara sumul a lokacin nakasawa ta sanyi yana da alaƙa da adadin nakasawa da kuma abun da ke cikin bututun ƙarfe mai bakin ƙarfe 904L.

Ana amfani da hanyoyin da ke sama guda uku wajen magance matsalar bututun bakin karfe ta hanyar amfani da su wajen magance matsalar.