Ipayipi lensimbi engenamthungou-e uwumugqa omude wensimbi onesiqephu esiphambanayo esingenalutho futhi awunamithungo nxazonke. Ngenxa yokuhluka kwenqubo yayo yokukhiqiza, inamandla aphezulu kanye nokumelana nokucindezela okuhle. Amapayipi ensimbi angenamthungo owethulwe ngalesi sikhathi ahlanganisa izinto ezimbili kanye nokucaciswa: Ibanga le-15CrMoG, ukucaciswa kwe-325 × 14 kanye12Cr1MoVGibanga, ukucaciswa 325×10.

Izimpawu kanye nokusetshenziswa kwe15CrMoGipayipi lensimbi
I-15CrMoG iyinsimbi ye-chromium-molybdenum alloy, izakhi zamakhemikhali eziyinhloko ezihlanganisa i-carbon (C), i-chromium (Cr), i-molybdenum (Mo), njll. Le nto inamandla amakhulu, ukumelana okuhle kwe-oxidation nokumelana nokushisa okuphezulu, ikakhulukazi endaweni yokushisa ephezulu kanye nengcindezi ephezulu. Ngaphezu kwalokho, i-15CrMoG nayo inokusebenza okuhle kwe-welding kanye nokusebenza kahle.

Isebenzisa
Amapayipi ensimbi angenamthungo enziwe nge-15CrMoG asetshenziselwa kakhulu izinga lokushisa eliphezulu kanye namapayipi anengcindezi ephezulu kanye nemishini, futhi asetshenziswa kabanzi kule mikhakha elandelayo:

Imboni yamandla: ama-boiler superheaters, izifudumezi kabusha, izihloko namapayipi esitimu amakhulu ezitshalweni zamandla ashisayo.
Imboni yamakhemikhali: amasistimu wamapayipi wama-reactors asezingeni eliphezulu kumishini yamakhemikhali.
Imboni ye-Petroleum: amapayipi okushisa aphezulu kanye nezishintshisi zokushisa ezindaweni zokuhluza.
Leli payipi lensimbi lingagcina izakhiwo ezinhle kakhulu zemishini emazingeni okushisa aphezulu, futhi lifaneleka ngokukhethekile emazingeni okushisa okusebenza esikhathi eside phakathi kuka-500°C no-580°C.
Izimpawu nokusetshenziswa kwamapayipi ensimbi angu-12Cr1MoVG
I-12Cr1MoVG iyinsimbi yezinga eliphezulu ye-chromium-molybdenum-vanadium alloy ebonakala ngamandla amakhulu, ukumelana kahle nokunyakaza, kanye nokugqwala okuqinile kanye nokumelana ne-oxidation. Uma kuqhathaniswa ne-15CrMoG, yengeza inani elincane le-vanadium (V), elithuthukisa ngokwengeziwe ukumelana nokushisa okuphezulu nokuzinza.
Isebenzisa
Amapayipi ensimbi angenamthungo enziwe nge-12Cr1MoVG avame ukusetshenziswa ezindaweni ezishisa kakhulu nezinomfutho ophezulu, futhi ububanzi bokusebenza kwawo buhlanganisa:
Inkundla yamandla: ama-high-temperatures, izifudumezi kabusha namapayipi ezitshalweni zamandla ashisayo nezitshalo zamandla enyukliya.
Imboni ye-Petrochemical: imishini yamakhemikhali enengcindezi ephezulu kanye namapayipi.
Ukukhiqiza ama-boiler: ukukhiqiza amashubhu kabhayela anengcindezi ephezulu kumadivayisi anengcindezi yokusebenza ephezulu.
Lolu hlobo lwepayipi lensimbi lufanele ukusetshenziswa isikhathi eside emazingeni okushisa asebenzayo angaphezu kuka-570 ° C futhi linokumelana nokukhasa okuqinile okuqinile kanye ne-ductility.
Ipayipi lensimbi elingu-15CrMoG elinokucaciswa kwe-325×14 kanye nepayipi lensimbi elingu-12Cr1MoVG elinokucaciswa kwe-325×10 linokugxila kulo. Womabili amapayipi ensimbi angenamthungo asebenza kahle kakhulu futhi asetshenziswa kakhulu ezimbonini ezishisa kakhulu nezinomfutho ophezulu njengamandla, amakhemikhali e-petrochemicals, namakhemikhali. Kuye ngendawo yokusetshenziswa, abasebenzisi bangakhetha impahla yepayipi yensimbi efaneleke kakhudlwana ukuhlangabezana nezidingo zokukhiqiza.