Insimbi yepayipi ye-L485 yomkhakha we-petroleum

Incazelo emfushane:

Ukusetshenziswa:ezokuthutha zamapayipi, ipayipi elibhayela, ipayipi elisebenza ngogesi/imoto, ukumba uwoyela/igesi, ukudla/isiphuzo/imikhiqizo yobisi, imboni yemishini, imboni yamakhemikhali, izimayini, umhlobiso webhilidi, ukusetshenziswa okukhethekile

Umumo wesigaba:nxazonke

Indawo yokuzalwa:Shandong, China

Ubukhulu:15-610 mm

Isimo:isikwele.Unxande.Umbuthano

Amasevisi okucubungula:ukushisela, ukubhoboza, ukusika, ukugoba, ukuqaqa

Thumela i-imeyili kithi

Imininingwane Yomkhiqizo

Omaka bomkhiqizo

I-L485 Pipeline Steel, Isho uhlobo lwensimbi enezidingo ezikhethekile ezisetshenziselwa ukuhambisa uwoyela, igesi yemvelo namanye amapayipi.Ngokuvumelana nobukhulu nokwakheka okulandelayo nezinye izici, ingakhiqizwa ngomshini wokugaya oshisayo, isigayo se-steckel noma isigayo sepuleti, futhi yakhiwe ngokushisela okuvunguzayo noma i-UOE yomphetho oqondile wepayipi yensimbi yobubanzi obukhulu.

I-L485 Pipeline Steel, Isingeniso Se

Ezokuthutha ngamapayipi kanye nezokuthutha ngololiwe, ezokuthutha ngothelawayeka, ezokuthutha zasemanzini kanye nezokuthutha ngomoya zibalwe njengezindlela ezinhlanu zokuhamba zesimanje.Kusukela epayipini lokuqala lezimboni kuze kube manje, ukwakhiwa kwamapayipi kawoyela negesi sekuhlangabezane nentuthuko cishe emakhulwini amabili eminyaka.Ukukhiqizwa nokusetshenziswa kwensimbi yamapayipi kwaqala sekwephuzile eShayina, futhi kwakungekho ukukhiqizwa kwensimbi yepayipi langempela ngaphambi kuka-1985. Nokho, eminyakeni yamuva nje, ukuthuthukiswa, ukuthuthukiswa kanye nokusetshenziswa kwensimbi yamapayipi eShayina kuye kwathuthuka ngokushesha.Ngokukhuthazwa kwamaphrojekthi amakhulu amapayipi afana nepayipi lasentshonalanga, ipayipi lokudluliswa kwegesi eNtshonalanga-mpumalanga kanye nepayipi lomugqa wesibili wokudluliswa kwegesi entshonalanga-mpumalanga, ukukhiqizwa kanye nokusetshenziswa kwensimbi yamapayipi i-X60, X70 kanye ne-X80 sekuqedwe ngokulandelana, kanye nemiphumela yocwaningo. ye-X100 ne-X120 itholakele.

I-L485 Pipeline Steel, Izinhlobo Zezicubu

I-L485 Pipeline Steel, Isakhiwo senhlangano siyisisekelo sokunquma ukusebenza kwayo kanye nesevisi ephephile.Njengamanje, izinsimbi zamapayipi zingahlukaniswa ngezigaba ezine ezilandelayo ngokuya ngesakhiwo sazo esincane:

1. Ferritic pearlite pipeline steel
Insimbi yepayipi le-ferritic pearlite iyisakhiwo esiyisisekelo sensimbi yepayipi eyakhiwa ngaphambi kweminyaka yawo-1960.I-X52 nensimbi yepayipi enamandla aphansi konke kuyi-ferritic pearlite.Izingxenye zayo eziyisisekelo yikhabhoni ne-manganese, kanti okuqukethwe kwekhabhoni (ingxenye enkulu, okufanayo ngezansi) kungu-0.10% kuya ku-0.20%, kanti okuqukethwe kwe-manganese kungu-1.30% kuya ku-1.70%.Ngokuvamile sebenzisa i-hot rolling noma ukukhiqizwa kwenqubo yokwelapha eshisayo.Uma kudingeka amandla aphezulu, umkhawulo ongaphezulu wokuqukethwe kwekhabhoni uyathandeka, noma i-trace niobium ne-vanadium yengezwe ohlelweni lwe-manganese.Izinsimbi zamapayipi we-Ferritic pearlite ngokuvamile zibhekwa njenge-polygonal ferrite enosayizi wokusanhlamvu olinganiselwa ku-7μm kanye ne-pearlite enengxenye yevolumu engaba ngu-30%.Izinsimbi ezijwayelekile zamapayipi e-ferritic pearlite yi-5LB, X42, X52, X60, X60 kanye ne-X70.

2. Insimbi yepayipi le-acicular ferrite
Ucwaningo lwensimbi yepayipi ye-acicular ferritic lwaqala ngasekupheleni kwawo-1960 futhi lwafakwa ekukhiqizweni kwezimboni ekuqaleni kwawo-1970.Ngaleso sikhathi, i-manganese - uhlelo lwe-niobium olusekelwe ku-E lwakha ikhabhoni ephansi.Ku-mn-Mo-Nb microalloy pipeline steel, ukungezwa kwe-molybdenum kunganciphisa izinga lokushisa lokuguqulwa ukuze kuvimbele ukwakheka kwe-polygonal ferrite, kukhuthaze ukuguqulwa kwe-acicular ferrite, futhi kuthuthukise umphumela wokuqinisa imvula we-carbon ne-niobium nitride, ukuze kwandiswe amandla ensimbi. futhi unciphise ukuqina kanye nezinga lokushisa lokuguquka kwe-brittle.Lobu buchwepheshe be-molybdenum alloying sebukhiqize cishe iminyaka engama-40.Eminyakeni yamuva, obunye ubuchwepheshe bokushisa obuphezulu bokuthola i-acicular ferrite buyavela.Ingathola i-acicular ferrite ekushiseni okuphezulu okugoqayo ngokusebenzisa ubuchwepheshe obuphezulu be-niobium alloying.Izinsimbi ezijwayelekile zamapayipi e-acicular ferrite yi-X70 ne-X80.

3. I-Bainite - insimbi yepayipi ye-martensite
Ngokuthuthukiswa komfutho ophezulu kanye nokugeleza okukhulu kwensimbi yepayipi legesi yemvelo kanye nokuphishekela ukunciphisa izindleko zokwakhiwa kwamapayipi, isakhiwo se-acicular ferrite asikwazi ukuhlangabezana nezidingo.Ekupheleni kwekhulu lama-20, kwavela uhlobo lwensimbi yamapayipi anamandla aphezulu.Amabanga ensimbi ajwayelekile yi-X100 ne-X120.I-X100 yabikwa okokuqala yi-SMI e-Japan ngo-1988. Ngemva kweminyaka yocwaningo nentuthuko, ipayipi le-X100 lafakwa okokuqala esigabeni sokuhlola ubunjiniyela ngo-2002. I-ExxonMobil yase-United States yaqala ucwaningo ngensimbi yamapayipi i-X120 ngo-1993, futhi 1996, yasebenzisana ne-SMI kanye ne-NSC yase-Japan ukukhuthaza ngokuhlanganyela inqubo yocwaningo ye-X120.Ngo-2004, insimbi ye-X120 yabekwa okokuqala engxenyeni yokuhlola yepayipi.

Ekwakheni ukwakheka kwensimbi yepayipi ye-bainite-martensitic, inhlanganisela ephelele yekhabhoni - manganese - yethusi - nickel - molybdenum - niobium - vanadium - titanium - boron ikhethiwe.Ukwakhiwa kwale alloy kusebenzisa ngokugcwele izici ezibalulekile ze-boron ekuguquguqukeni kwesigaba.Ukwengezwa kwe-trace boron (ωB=0.0005% ~ 0.003%) ngokusobala kungavimbela i-nucleation ye-ferrite emngceleni wokusanhlamvu we-austenite futhi kwenze ijika le-ferrite lishintshe liye kwesokudla ngokusobala.Ngisho naku-ultra-low carbon (ωC=0.003%), Ijika le-bainite lenguquko lenziwa isicaba ngokwehlisa izinga lokushisa lokugcina lokupholisa (& LT; 300℃) kanye nezinga lokupholisa elithuthukisiwe (> 20℃/s), ukwakheka okuphansi kwe-bainite kanye ne-lath martensite nakho kungatholakala.Izinsimbi zamapayipi ezivamile ze-bainite-martensite (B -- M) yi-X100 ne-X120.

4. Insimbi yepayipi le-sophorite eqinile
Ngokuthuthuka komphakathi, insimbi yamapayipi iyadingeka ukuze ibe namandla aphezulu kanye nokuqina.Uma ubuchwepheshe bokugoqa nokupholisa obulawulwayo bungakwazi ukuhlangabezana nezidingo ezinjalo, inqubo yokwelapha ukushisa yokucisha okuqinile kanye nokufudumeza kungamukelwa ukuze kuhlangatshezwane nezidingo ezibanzi zodonga oluwugqinsi, amandla aphezulu kanye nokuqina okwanele ngokwenza i-sorbitite epholile.Kunsimbi yepayipi, le-sortensite ye-homogenous, eyaziwa nangokuthi i-homogenous martensite, iwuhlobo lwenhlangano lwe-ultra-high power pipeline steel X120.

Ukwakheka Kwamakhemikhali

I-L245 Pipeline Steel, Ifomula yokubala isisindo :[(ububanzi bangaphandle - ukujiya kodonga)* ukujiya kodonga]*0.02466=kg/ m (isisindo imitha)

Ukwakheka kwamakhemikhali (ingxenyana yobuningi)…/%															i-carbon equivalent(CEV) %
C	Si	Mn	P	S	Nb	V	Ti	Cr	Ni	Cu	N	Mo	B	Als
ngaphansi noma kulingana															ngaphansi noma kulingana
Q345	A	0.2	0.5	1.7	0.035	0.035				0.3	0.5	0.2	0.012	0.1			0.45
	B				0.035	0.035
	C				0.03	0.03	0.07	0.15	0.2							0.015
	D	0.18			0.03	0.025
	E				0.025	0.02
Q390	A	0.2	0.5	1.7	0.035	0.035	0.07	0.2	0.2	0.3	0.5	0.2	0.015	0.1			0.46
	B				0.035	0.035
	C				0.03	0.03										0.015
	D				0.03	0.025
	E				0.025	0.02
Q420	A	0.2	0.5	1.7	0.035	0.035	0.07	0.2	0.2	0.3	0.8	0.2	0.015	0.2			0.48
	B				0.035	0.035										0.015
	C				0.03	0.03
	D				0.03	0.025
	E				25	0.02
Q450	C	0.2	0.6	1.8	0.03	0.03	0.11	0.2	0.2	0.3	0.8	0.2	0.015	0.2	0.005	0.015	0.53
	D				0.03	0.025
	E				0.025	0.02