Uma ufuna ukwazi ulwazi olwengeziwe, njengekhotheshini, imikhiqizo, izixazululo, njll., pqashaxhumana nathi ku-inthanethi.
I-Tianjin Sanon Steel Pipe Co., Ltd. ingumthengisi wamasheya. Ifektri yethu yamasheya iseDolobheni laseCangzhou, eSifundazweni saseHebei. Imithombo yethu eyinhloko yezimpahlaamapayipi ebhoyila, futhi izinto ezimele ziyiI-ASTM A335 P5/P11/P91/P92,I-ASME SA-106/SA-106MGR.B,I-GB/T 3087-200810#/20#. Izinto ezimele amapayipi epayipi yileziI-API 5L,I-API 5CT, izinto ezimele amapayipi okuqhekeka kwephethiloliI-GB/T 9948ziyi-15MoG/12CrMoVG. I-GB/T 6479-2013 imele izinto ezingu-10#/20#, amashubhu okushintshanisa ukushisa i-SA179/SA210/SA192, njll., amashubhu omshini i-GB/T 8162 amele izinto ezingu-10#/20#/Q345/42CrMo, i-EN10210 imele izinto ezingu-S355JOH/S355J2H, amashubhu esilinda segesi i-GB1 8248, amele izinto ezingu-34CrMo4/30CrMo.
Amapayipi ensimbi angenamthungo enziwe nge-I-ASTM A335 P11futhiI-ASTM A335 P22zisetshenziswa kabanzi embonini yamakhemikhali kagesi kanye neyokukhiqiza ugesi ngezinto ezishisa kakhulu, ezingamelani nokucindezela. Nakuba zombili ziyipayipi lensimbi ye-chromium-molybdenum alloy elichazwe ngaphansi kwendinganiso ye-ASTM A335, zibonisa umehluko omkhulu ekusebenzeni okuthile kanye nezimo zokusetshenziswa. Ukuqonda lo mehluko kubalulekile kokubili ekwakhiweni kobunjiniyela, ekukhetheni izinto, kanye nasekulawulweni kwekhwalithi yokuthengwa.
Ukwakheka kwamakhemikhali kuyisici esiyinhloko esihlukanisa lezi zinto ezimbili.Ipayipi le-A335 P11Ukwakheka kwamakhemikhali kuqukethe cishe izingxenye ze-chromium eziyi-1.00 kuya ku-1.50 kanye nezingxenye ze-molybdenum eziyi-0.44 kuya ku-0.65. Ngakolunye uhlangothi, i-ASTM A335 P22 iqukethe izakhi zokuxuba eziphezulu, ezinokuqukethwe kwe-chromium okungaba izingxenye eziyi-1.90 kuya ku-2.60 kanye nokuqukethwe kwe-molybdenum okusukela ezingxenyeni eziyi-0.87 kuya ku-1.13. Lo mehluko wokwakheka uholela ngqo ekwehlukeni okukhulu ekusebenzeni kwazo kokushisa okuphezulu. Okuqukethwe kwe-chromium ne-molybdenum okuphezulu kwe-P22 kunikeza amandla aphezulu okushisa okuphezulu, ukumelana nokushiswa kwe-oxidation, kanye nokumelana nokuqhekeka.
Uma kukhulunywa ngokukhetha izinto zokusetshenziswa kobunjiniyela, izimo zokusetshenziswa kwalezi zinto ezimbili zihluka kakhulu. I-P11 ivame ukusetshenziswa ezindaweni zokushisa okuphakathi kanye nengcindezi futhi ivame ukutholakala ekufakweni kwamapayipi ezinqubo ezimbonini zokucwenga uwoyela, amapayipi e-superheater aphansi ezimbonini zamandla, kanye nezinye izinhlelo zokushintshanisa ukushisa. Izinga lokushisa layo lokuklama ngokuvamile lingaphansi kuka-550°C. I-P22, ngakolunye uhlangothi, yenzelwe izindawo ezishisa kakhulu nezinomfutho ophezulu futhi iyinto ekhethwayo yamapayipi e-superheater asezingeni eliphezulu kanye ne-reheater kuma-boiler ezimbonini zamandla, kanye namapayipi okusabela okushisa okuphezulu kanye nengcindezi ephezulu embonini ye-petrochemical. Igcina izakhiwo ezinhle kakhulu zemishini kanye nokumelana nokugqwala emazingeni okushisa okuklama angu-580°C nangaphezulu.
Lapho kuthengwa lezi zinto ezimbili, kufanele kuqashelwe ngokukhethekile umehluko ezidingweni zazo zobuchwepheshe. Ngokuphathelene nokuphambuka kobukhulu bodonga, zombili zinamathela kububanzi obufanayo bokubekezelela obuchazwe yi-Izinga le-ASTM A335. Lapho bethenga, abahlinzeki kufanele bacelwe ukuthi banikeze imibiko yokuhlola enemininingwane yobukhulu ukuqinisekisa ukuthi ukufana kobukhulu bodonga kuhlangabezana nezidingo zamapayipi okucindezela. Ngokuphathelene nokulawulwa kokwakheka kwamakhemikhali, abasebenzi bokuthenga kumele babuyekeze ngokuqinile izitifiketi zezinto ukuqinisekisa ukuthi okuqukethwe kwezinto ezibalulekile zokuhlanganisa njenge-chromium ne-molybdenum kuhlangabezana nezidingo ezijwayelekile. Okuphawulekayo ukuthi, isidingo sokuqukethwe kwe-molybdenum se-P22 siphakeme kakhulu kunese-P11, okubaluleke kakhulu ekuqinisekiseni ukusebenza kwezinga lokushisa eliphezulu. Ngaphezu kwalokho, lapho uthenga, ukwelashwa kokushisa okufanele kufanele kukhethwe ngokusekelwe endaweni yokusetshenziswa. Ukulungisa nokulungisa ngokuvamile kuyindlela engcono kakhulu yokuqinisekisa ukusebenza kwezinto.
Nakuba i-ASTM A335 P11 kanye ne-P22 ziyingxenye yomndeni ofanayo wensimbi ye-chromium-molybdenum alloy, i-P22 inikeza ukusebenza okuphezulu kakhulu kokushisa ngenxa yokuqukethwe kwayo okuphezulu kwe-alloy, okuholela ezindleko zokuthenga eziphakeme. Izici ezifana nokushisa kokusebenza, amapharamitha okucindezela, izici zemidiya, kanye nesabelomali sezindleko kumele kucatshangelwe ngokuphelele ngesikhathi sokuklama kobunjiniyela kanye nokukhethwa kwezinto. Ngesikhathi senqubo yokuthenga, izindlela ezibalulekile zekhwalithi njengokwakheka kwamakhemikhali, izakhiwo zemishini, kanye nokubekezelelana kobukhulu kumele kulawulwe ngokuqinile ukuqinisekisa ukuthi izinto zihlangabezana nezidingo zokuklama kanye nezindinganiso zokuphepha. Ukukhethwa kwezinto ezifanele kanye nokulawulwa kwekhwalithi yokuthenga okuqinile kubalulekile ekuqinisekiseni ukusebenza okuphephile kwesikhathi eside kwezinhlelo zamapayipi okushisa okuphezulu.
Isikhathi sokuthunyelwe: Agasti-22-2025
