I-GB/T 5310-2017 incazelo yobuchwepheshe yamapayipi ensimbi angenamthungo ama-boiler anomfutho ophezulu ngokwezinga likazwelonke laseShayina. Iyasebenza ekwakhiweni kwama-boiler anomusi, amapayipi, neminye imishini esebenza ngomfutho ophezulu nangaphezulu.
Le nqubo ihlanganisa izinhlobo ezahlukene zezinsimbi ze-alloy, lapho i-12CrMoG kanye ne-15CrMoG kuyizinsimbi ze-alloy ezimbili ezivame ukusetshenziswa kakhulu ezinezinhlelo zokusebenza eziningi kanye nezinzuzo ezibalulekile.
12CrMoGiyinsimbi ye-chromium-molybdenum alloy enokumelana okuhle kakhulu nokushisa okuphezulu kanye nokumelana nokushiswa kwe-oxidation. Ifanele ama-boiler superheater, ama-reheater, amapayipi omusi, kanye nezinye izingxenye ezisebenza emazingeni okushisa angaphansi kuka-540°C. Izinzuzo zayo zifaka phakathi amandla aphezulu okuhamba kanye namandla okukhuthazela, kanye nekhono lokugcina izakhiwo ezizinzile zemishini ngaphansi kwezimo zokushisa okuphezulu kanye nokucindezela okuphezulu. Iphinde ibe nokushintshwa okuhle kanye nokucutshungulwa, okwenza kube lula ukuyikhiqiza nokuyifaka.

15CrMoGingenye insimbi ye-chromium-molybdenum alloy esebenza kahle kakhulu kune-12CrMoG. Ifanele izingxenye zebhoyila ezinomfutho ophezulu ezisebenza emazingeni okushisa angaphansi kuka-550°C. Le nto inika amandla aphezulu okushisa aphezulu kanye nokumelana nokushiswa kwe-oxidation, okwenza ifaneleke kakhulu ekukhiqizeni izingxenye ezibalulekile njengezihloko zebhoyila kanye namapayipi amakhulu omusi. I-15CrMoG iphinde ibe nokumelana okuhle kakhulu nokugqwala kwe-hydrogen, ivimbela ngempumelelo ukuwohloka kwezinto ezindaweni ze-hydrogen ezinomfutho ophezulu kanye nokwandisa impilo yemishini.

Lezi zinsimbi ezimbili ze-alloy zisetshenziswa kabanzi emishinini eshisa kakhulu, enomfutho ophezulu embonini yamandla, i-petrochemical, kanye neyamakhemikhali. Izinzuzo zazo zibonakala kakhulu kulezi zici ezilandelayo: Okokuqala, zibonisa izakhiwo ezinhle kakhulu zemishini eshisa kakhulu, ezizivumela ukuthi zikwazi ukumelana nezimo zokusebenza ezishisa kakhulu, ezinomfutho ophezulu isikhathi eside; okwesibili, zibonisa ukuzinza okuhle kakhulu kwesakhiwo, okwenza zingathinteki kakhulu ekuwohlokeni kwesakhiwo ngesikhathi senkonzo yesikhathi eside; okwesithathu, zibonisa ukushibilika okuhle kakhulu kanye nokukwazi ukucutshungulwa, okwenza kube lula ukwenziwa nokugcinwa; futhi ekugcineni, ukusetshenziswa kwazo kuthuthukisa kakhulu ukuphepha nokuthembeka kwemishini, kunciphisa isikhathi sokungasebenzi kanye nokugcinwa, futhi kunciphisa izindleko zokusebenza.

Ezinye izinsimbi ze-alloy ezisebenza kahle kakhulu nazo ziyatholakala ukuze zihlangabezane nezidingo zokushisa okuhlukahlukene, ingcindezi, kanye nezindawo ezigqwalayo.

20G(Insimbi Yekhabhoni)
Nakuba i-20G ingeyona insimbi ye-alloy, iyinto ebalulekile ebhalwe ku-GB/T 5310-2017 njengensimbi yesakhiwo yekhabhoni esezingeni eliphezulu, esetshenziswa kakhulu ezingxenyeni zebhoyila ezinokushisa okuphansi njengezi-economizers kanye nama-superheater anokushisa okuphansi. Izinzuzo zayo zifaka phakathi izindleko eziphansi kanye nezakhiwo ezinhle kakhulu zomshini kanye nokushisela. Ifaneleka kumapayipi ebhoyila anomfutho ophakathi nophansi anezinga lokushisa lokusebenza elingadluli ku-450°C.
12Cr1MoVG
I-12Cr1MoVG iyinsimbi ye-chromium-molybdenum-vanadium alloy enamandla aphezulu okushisa okuphezulu kanye nokumelana ne-oxidation uma kuqhathaniswa ne-12CrMoG kanye ne-15CrMoG. Ukwengezwa kwe-vanadium kuthuthukisa amandla okuhamba kanye namandla okukhuthazela kwezinto, okwenza ukuthi igcine ukusebenza okuzinzile ezindaweni ezishisa kakhulu zesikhathi eside. I-12Cr1MoVG ifanele ama-superheater e-boiler anengcindezi ephezulu, ama-reheater, kanye namapayipi amakhulu omusi anezinga lokushisa lokusebenza elingaphansi kuka-570°C.
25MnG(Insimbi Ephansi Ye-Manganese Alloy)
I-25MnG iyinsimbi ethambile ene-alloy ephansi enokuqukethwe okuphezulu kwe-manganese, enikeza amandla athuthukisiwe nokuqina uma kuqhathaniswa ne-20G. Inamandla aphezulu okukhiqiza kanye namandla okudonsa ngenkathi igcina ukushibilika okuhle. I-25MnG ifanele izingxenye zebhoyila ezinamazinga okushisa okusebenza aphezulu kancane, njengamashubhu e-superheater kanye namapayipi omusi kuma-boyila anomfutho ophakathi. Izinga lokushisa layo lokusebenza ngokuvamile alidluli ku-480°C. Ezingxenyeni zebhoyila ezinezidingo zokushisa eziphansi, insimbi yekhabhoni engu-20G iyathandwa ngenxa yokusebenza kwayo okonga imali. Lapho amazinga okushisa esondela ku-450°C, i-25MnG iyindlela yokukhetha. Emazingeni okushisa aphakathi kuka-450-500°C, kunconywa i-15MoG. Emazingeni okushisa aphakathi kuka-500-530°C, i-20MoG iyisinqumo esifaneleka kakhulu. Lezi zigaba ezingezona i-alloy kanye ne-alloy ephansi, ezihlanganiswe nensimbi ethambile, zingenza ngcono izindleko zokukhiqiza amabhoyila ngenkathi zigcina ukusebenza kahle.