Isingeniso

Ezweni elidinga kakhulu amapayipi ezimboni, lapho amazinga okushisa aphezulu kanye nezindawo ezigqwalisayo kuyinto evamile, ukukhethwa kwezinto kubaluleke kakhulu. Phakathi kwezinsimbi ze-chromium-molybdenum (Cr-Mo) alloy, i-P9 ivelele njengento ethembekile futhi ekhethekile eyenzelwe isevisi yokushisa okuphezulu. Ipayipi Lensimbi Ye-Alloy P9 liyisisekelo sezinhlelo zokusebenza ezisukela ekukhiqizeni ugesi kuya ekuhlanzeni uphethiloli, elibaluleke kakhulu ngenhlanganisela yalo eyingqayizivele yamandla, ukumelana nokushiswa kwe-oxidation, kanye nokuzinza kwesakhiwo.

KuyiniIpayipi Lensimbi Yengxubevange P9?

Ipayipi le-P9 liyigama elivela ku-ASTM (American Society for Testing and Materials)Izinga le-A335, ehlanganisa ipayipi lensimbi ye-ferritic alloy engenamthungo ukuze isetshenziswe ekushiseni okuphezulu. I-"P" imelela ipayipi, kanti i-"9" ibhekisela ekwakhekeni kwayo kwamakhemikhali athile, okugxile ku-9% chromium kanye ne-1% molybdenum. Le khemikhali ethile iyisihluthulelo sokusebenza kwayo.

Izici Eziyinhloko Nokwakheka

Izakhiwo zeIpayipi lensimbi le-P9zitholakala ezintweni zayo eziqondile zokuhlanganisa:

•I-Chromium (Cr ~9%): Lesi yisici esiyinhloko esihlinzeka ngokumelana okuthuthukisiwe ne-oxidation (ukukhula) kanye nokugqwala, ikakhulukazi ezindaweni ezinesibabule. Yakha ungqimba oluqinile noluvikelayo lwe-chromium oxide ebusweni bensimbi.

•I-Molybdenum (Mo ~1%): I-Molybdenum ikhulisa kakhulu amandla ensimbi emazingeni okushisa aphezulu. Isiza ekuvimbeleni ukukhukhuleka, ukuguquka kancane, okuqhubekayo kwezinto ngaphansi kokucindezeleka okuqhubekayo emazingeni okushisa aphezulu.

Lokhu kwakheka kunikeza amapayipi e-P9 izinzuzo eziningana ezibalulekile:

•Amandla Aphezulu Okushisa Okuphezulu: I-P9 igcina ubuqotho bayo bomshini kanye nomthamo wayo wokuthwala umthwalo emazingeni okushisa avame ukufika ku-1100°F (593)°C), okwenza ifaneleke kakhulu emigqeni yomusi enengcindezi ephezulu kanye nezinqubo.

•Ukumelana Okuhle Nokushiswa Kwe-Oxidation: Okuqukethwe kwe-chromium engu-9% kunikeza intuthuko enkulu ekumelaneni nokushiswa kwe-oxidation uma kuqhathaniswa nezinsimbi eziphansi ze-alloy ezifana ne-P11 noma i-P22.

•Amandla Okuqhekeka Okuthuthukisiwe Kwe-Creep: Amandla ayo okubekezelela ukuchayeka isikhathi eside ekucindezelekeni okuphezulu kanye nokushisa ngaphandle kokwehluleka yisizathu esiyinhloko sokusetshenziswa kwayo ezisetshenziswa ezibalulekile.

•Ukuzinza Kwesakhiwo Esincane: Ingxubevange yakhelwe ukumelana nokwakheka kwezigaba ezingathandeki ezingalimaza insimbi ngokuhamba kwesikhathi ngesikhathi senkonzo yokushisa okuphezulu.

Izicelo Ezijwayelekile

Amapayipi e-P9 e-Alloy Steel asetshenziswa kakhulu ezimbonini lapho amazinga okushisa aphezulu eba yisici esiqhubekayo:

•Ukukhiqizwa Kwamandla: Amapayipi e-Superheater kanye ne-reheater, imigqa emikhulu yomusi, kanye nezinye izinhlelo zamapayipi okushisa okuphezulu ezitshalweni zamandla ezisebenzisa uphethiloli.

•Ukulungisa nokulungisa: Imigqa yokudlulisa ezindaweni zokucwenga, amashubhu okushisa, kanye namapayipi ezinqubo ezihilela ama-hydrocarbon ashisa kakhulu.

•Ukucubungula Amakhemikhali: Ukuze kudluliswe imifudlana yenqubo emazingeni okushisa aphezulu lapho kudingeka khona ukumelana nokugqwala.

Izinzuzo Kunezinye I-Alloys

Nakuba kunezinhlobo eziningi ze-Cr-Mo alloys, i-P9 inendawo ethile. Inikeza ukumelana okungcono kwe-oxidation kanye namandla aphezulu kune-alloy ejwayelekile engu-2.25% Cr (P22), ngaphandle kwezindleko eziphakeme kakhulu kanye nobunzima bokushisela bomndeni ongu-9-12% Cr (P91). Lokhu kwenza i-P9 ibe ukukhetha okungabizi kakhulu futhi okunengqondo kwezobuchwepheshe kwezicelo eziningi zokushisa okuphakathi.

Isiphetho

Ipayipi Lensimbi Ehlanganisiwe i-P9 iyinto eqinisekisiwe futhi ebaluleke kakhulu konjiniyela abaklama izinhlelo zamapayipi okushisa okuphezulu. Ukwakheka kwayo okulinganiselayo kwe-9% chromium kanye ne-1% molybdenum kunikeza inhlanganisela efanele yamandla, ukumelana nokushiswa kwe-oxidation, kanye nokuqina. Ezinhlelweni lapho ukuthembeka ngaphansi kokucindezeleka kokushisa kungaxoxiswana ngakho, i-P9 iyaqhubeka nokuba yisisombululo esithembekile nesisebenza kahle kakhulu.