Gabatarwa

Grade 304 shine ma'auni "18/8" bakin karfe;shi ne mafi m da kuma mafi yadu amfani da bakin karfe, samuwa a cikin fadi da kewayon kayayyakin, siffofin da kuma gama fiye da kowane.Yana da kyau kwarai forming da walda halaye.Daidaitaccen tsarin austenitic na Grade 304 yana ba shi damar zana mai zurfi ba tare da annashuwa na tsaka-tsaki ba, wanda ya sanya wannan matakin ya mamaye kera sassan bakin da aka zana kamar su nutsewa, kwalabe-ware da miya.Don waɗannan aikace-aikacen ya zama ruwan dare don amfani da bambance-bambancen “304DDQ” (Deep Drawing Quality) na musamman.Mataki na 304 birki ne da sauri ko birki a cikin nau'ikan abubuwa daban-daban don aikace-aikace a cikin masana'antu, gine-gine, da filayen sufuri.Grade 304 kuma yana da fitattun halaye na walda.Ba a buƙatar annealing bayan walda lokacin walda sassan bakin ciki.

Daraja 304L, ƙaramin sigar carbon na 304, baya buƙatar ƙarar walƙiya bayan walda don haka ana amfani da shi sosai a cikin abubuwan ma'aunin nauyi (sama da 6mm).Matsayi 304H tare da mafi girman abun ciki na carbon yana samun aikace-aikacen a yanayin zafi mai tsayi.Tsarin austenitic kuma yana ba wa waɗannan maki kyakkyawan ƙarfi, har zuwa yanayin zafi na cryogenic.

Maɓalli Properties

An ƙayyade waɗannan kaddarorin don samfurin birgima (faranti, takarda da nada) a cikin ASTM A240/A240M.Irin wannan amma ba dole ba ne kaddarorin da aka keɓance don wasu samfuran kamar bututu da mashaya a cikin ƙayyadaddun su.

Abun ciki

An ba da jeri na yau da kullun don nau'ikan bakin karfe 304 a cikin tebur 1.

Tebur 1.Haɗin kai don bakin karfe 304

Kayayyakin Injini

An ba da kaddarorin injiniya na yau da kullun don nau'ikan bakin karfe 304 a cikin tebur 2.

Table 2.Mechanical Properties na 304 grade bakin karfe

Juriya na Lalata

Madalla a cikin kewayon yanayi na yanayi da kuma yawancin kafofin watsa labarai masu lalata.Dangane da lalatawar ramuka da ɓarna a cikin yanayin chloride mai dumi, da kuma damuwa da lalatawar lalata sama da kusan 60 ° C.An yi la'akari da juriya ga ruwan sha tare da kusan 200mg/L chlorides a yanayin zafi, ragewa zuwa kusan 150mg/L a 60 ° C.

Juriya mai zafi

Kyakkyawan juriya na iskar oxygen a cikin sabis na tsaka-tsaki zuwa 870 ° C kuma a ci gaba da sabis zuwa 925 ° C.Ci gaba da amfani da 304 a cikin kewayon 425-860°C ba a ba da shawarar ba idan juriya na lalata ruwa na gaba yana da mahimmanci.Matsayi 304L ya fi juriya ga hazo carbide kuma ana iya dumama shi cikin kewayon zafin jiki na sama.

Matsayi 304H yana da ƙarfi mafi girma a yanayin zafi mai tsayi don haka galibi ana amfani dashi don aikace-aikacen tsari da matsi a yanayin zafi sama da kusan 500°C kuma har zuwa kusan 800°C.304H zai zama mai hankali a cikin kewayon zafin jiki na 425-860 ° C;wannan ba matsala ba ne don aikace-aikacen zafin jiki mai girma, amma zai haifar da rage juriya na lalata ruwa.

Maganin Zafi

Maganin Magani (Annealing) - Zafi zuwa 1010-1120 ° C kuma yayi sanyi da sauri.Ba za a iya taurare waɗannan maki ta hanyar maganin zafi ba.

Walda

Kyakkyawan walƙiya ta kowane daidaitattun hanyoyin haɗakarwa, duka tare da ba tare da ƙarafa mai filler ba.AS 1554.6 pre-cancantar walda na 304 tare da Grade 308 da 304L tare da 308L sanduna ko lantarki (kuma tare da su high silicon kwatankwacin).Sassan welded masu nauyi a cikin digiri na 304 na iya buƙatar annealing bayan walda don iyakar juriyar lalata.Ba a buƙatar wannan don Grade 304L.Hakanan za'a iya amfani da digiri na 321 azaman madadin 304 idan ana buƙatar walda mai nauyi kuma maganin zafi bayan walda ba zai yiwu ba.

Aikace-aikace

Aikace-aikace na yau da kullun sun haɗa da:

Kayan aikin sarrafa abinci, musamman a cikin shayar da giya, sarrafa madara & yin giya.

Kitchen benches, sinks, bakuna, kayan aiki da kayan aiki

Gine-gine na gine-gine, dogo & datsa

Kwantenan sinadarai, gami da sufuri

Masu musayar zafi

Saƙa ko waldadden fuska don hakar ma'adinai, fasa dutse & tace ruwa

Zaren fasteners

Springs