Phakathi kwezinhlobo ezahlukene zensimbi engenasici, amabanga 304, 304l, no-304H zivame ukusetshenziswa. Ngenkathi zingabukeka zifanayo, ibanga ngalinye linezakhiwo zalo ezihlukile kanye nezicelo.
Khuphuka304 insimbi engagqwaliIngabe isetshenziswa kakhulu futhi iguquguqukayo yochungechunge olungama-300 olungenacala. Ine-chromium engu-18-20% ne-8-10.5% nickel, kanye namanani amancane ekhabhoni, i-manganese kanye ne-silicon. Leli banga linokumelana okuhle kakhulu kokugqwala nokwakheka okuhle. Ivame ukusetshenziswa kuzinhlelo zokusebenza ezinjengemishini yasekhishini, ukucubungula ukudla, kanye nomhlobiso wezakhiwo.
304l Ipayipi lensimbi engenacalaIngabe ukwahluka okuphansi kwe-carbon steel ye-grade yebanga le-304, ngokuqukethwe okuphezulu kwekhabhoni ngo-0.03%. Lokhu okuqukethwe okuphansi kwekhabhoni kusiza ukunciphisa ukufudumala kwe-carbide ngesikhathi se-welding, okwenza kulungele izinhlelo zokusebenza ze-welding. Okuqukethwe okuphansi kwekhabhoni kunciphisa ubungozi bokuzwakala, okungukuthi ukwakheka kwe-chromium carbides emingceleni yokusanhlamvu, okungaholela ekugcuthweni kwezingqinamba. I-304L ivame ukusetshenziselwa izinhlelo zokusebenza ze-welding, kanye nendawo lapho ubungozi bokugqwala luyinkinga, njengokucubungula kwamakhemikhali kanye nemishini yezemithi.
304H insimbi engagqwaliUhlobo oluphezulu lwekhabhoni lweBanga 304, ngokuqukethwe kwekhabhoni kusuka ku-0.04-0.10%. Okuqukethwe okuphezulu kwe-carbon kuhlinzeka ngamandla aphezulu okushisa aphezulu kanye nokumelana nokumelana. Lokhu kwenza i-304H ilungele izinhlelo zokushisa eziphakeme zokushisa, njengezinto zokucindezela, ukushintshaniswa kokushisa, kanye nama-boilers ezimboni. Kodwa-ke, okuqukethwe okuphezulu kwe-carbon kubuye kwenze ama-304h athambekele ekuzwakaliseni nasekunciphiseni kokuhlangana, ikakhulukazi ezihlolweni ze-welding.
Ngamafuphi, umehluko omkhulu phakathi kwalawa mabanga aqukethe i-carbon yabo kanye nomphumela wokufaka izicelo zokushisa kanye nezicelo zokushisa eziphakeme. Ibanga le-304 liyinhloso esetshenziswa kakhulu nelijwayelekile, kanti i-304l ingukhetho olukhethwayo lokusetshenziswa kwe-welding kanye nezindawo lapho kuvela khona ukuthuthuka. I-304H inokuqukethwe okuphezulu kwe-carbon futhi ilungele izinhlelo zokusebenza eziphezulu zokushisa, kepha ukuthambekela kwayo ekuzwelisweni kokuzwakala nokugqwala kokunhlangothi kudinga ukucatshangelwa ngokucophelela. Lapho ukhetha phakathi kwala mabanga, kubalulekile ukubheka izidingo ezithile zohlelo lokusebenza, kufaka phakathi imvelo yokusebenza, izinga lokushisa kanye nezidingo ze-welding.
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Isikhathi sePosi: Aug-08-2024