L485 paipu kila no ka ʻoihana ʻaila

L485 pipeline kila no ka ʻoihana ʻaila kiʻi Hōʻikeʻike

ʻO ka wehewehe pōkole:

Hoʻohana:ka lawe ʻana i ka pipeline, pipeline boiler, pipeline hydraulic/automobile, oil/gas drilling, meaʻai/mea inu/hua waiu, ʻoihana mīkini, ʻoihana kemika, mining, hale hoʻonani, hoʻohana kūikawā

ʻAno ʻāpana:poepoe

Wahi hānau:Shandong, Kina

mānoanoa:15-610 mm

ʻano:huinaha.Retangle.Pōʻai

Nā lawelawe hana:kuʻi, kuʻi, ʻoki, kūlou, wehe ʻole

E hoʻouna i ka leka uila iā mākou

Huahana Huahana

L485 Pipeline Steel, E pili ana i kahi ʻano kila me nā koi kūikawā i hoʻohana ʻia no ka lawe ʻana i ka aila, ke kinoea maoli a me nā pipeline ʻē aʻe.Wahi a ka mānoanoa a me ka hoʻokumu ʻana a me nā ʻano ʻē aʻe, hiki ke hana ʻia e ka wili wela, ka wili steckel a i ʻole ka wili pā, a hana ʻia e ka wiliwili spiral a i ʻole UOE wili wili pololei o ka paipu kila nui.

L485 Pipeline Steel, Introduction To The

ʻO ka halihali paipu a me ke kaʻaahi kaʻaahi, ka lawe ʻana i ke alaloa, ka lawe ʻana i ke ala wai a me ka lawe ʻana i ka ea i helu ʻia he ʻelima mau ʻano kaʻa kaʻa hou.Mai ka pipeline ʻoihana mua a hiki i kēia manawa, ua ʻike ʻia ke kūkulu ʻana i ka ʻaila a me ke kinoea ma kahi o ʻelua mau kenekulia o ka hoʻomohala ʻana.Hoʻomaka ka hana ʻana a me ka hoʻohana ʻana o ka pipeline steel i ka hopena o Kina, a ʻaʻohe mea hana kila pipeline maoli ma mua o 1985. Eia naʻe, i nā makahiki i hala iho nei, ua ulu wikiwiki ka hoʻomohala ʻana, ka hoʻomohala ʻana a me ka hoʻohana ʻana i ke kila pipeline ma Kina.Me ka hoʻolaha ʻana i nā papahana pipeline nui e like me ke komohana pipeline, West-east gas transmission pipeline a me ke komohana-hikina keeaea hoʻoili lua laina pipeline, ua hoʻopau ʻia ka hana a me ka noi ʻana o X60, X70 a me X80 pipeline steel, a me nā hopena noiʻi. o X100 a me X120 ua loaa.

L485 Pipeline Steel, Nā ʻano Tissue

L485 Pipeline Steel, ʻO ka hoʻonohonoho hoʻonohonoho ke kumu no ka hoʻoholo ʻana i kāna hana a me ka lawelawe palekana.I kēia manawa, hiki ke hoʻokaʻawale ʻia nā kila pipeline i ʻehā mau ʻāpana e like me kā lākou microstructure:

1. Ferritic pearlite pipeline kila
ʻO ka ferritic pearlite pipeline steel ke kumu kumu o ka pipeline steel i kūkulu ʻia ma mua o nā makahiki 1960.ʻO X52 a me ke kila paipu me ka ikaika haʻahaʻa haʻahaʻa he pearlite ferritic.ʻO kāna mau mea kumu he kalapona a me ka manganese, a ʻo ka maʻiʻo kalapona (ka hapa nui, ka like ma lalo) he 0.10% a 0.20%, a ʻo ka ʻike manganese he 1.30% a 1.70%.E hoʻohana maʻamau i ka ʻōwili wela a i ʻole ke kaʻina hana lapaʻau wela.Ke koi ʻia ka ikaika kiʻekiʻe, makemake ʻia ka palena kiʻekiʻe o ke kalapona, a i ʻole trace niobium a me vanadium e hoʻohui ʻia i ka ʻōnaehana manganese.Manaʻo ʻia ʻo Ferritic pearlite pipeline steels he polygonal ferrite me ka nui o ka palaoa ma kahi o 7μm a me ka pearlite me kahi hapa leo ma kahi o 30%.ʻO nā mea kila ferritic pearlite pipeline maʻamau he 5LB, X42, X52, X60, X60 a me X70.

2. Acicular ferrite pipeline kila
Ua hoʻomaka ka noiʻi ʻana o ka acicular ferritic pipeline steel i ka hopena o 1960s a ua hoʻokomo ʻia i loko o ka hana ʻenehana i nā makahiki 1970 mua.I kēlā manawa, ua hoʻokumu ka manganese - niobium i hoʻokumu ʻia ma ka E i ka carbon haʻahaʻa.I ka mn-Mo-Nb microalloy pipeline steel, hiki i ka hoʻohui ʻana o ka molybdenum ke hoʻemi i ka mahana o ka hoʻololi ʻana e pale ai i ka hoʻokumu ʻana o ka polygonal ferrite, hoʻoikaika i ka hoʻololi ʻana o ka ferrite acicular, a hoʻomaikaʻi i ka hopena hoʻoikaika o ka ua o ke kalapona a me ka niobium nitride, i mea e hoʻonui ai i ka ikaika o ke kila. a hoʻemi i ka paʻakikī a me ka brittle-transition wela.Ua hana ʻia kēia ʻenehana molybdenum alloying no kahi kokoke i 40 mau makahiki.I nā makahiki i hala iho nei, ke puka mai nei kekahi ʻenehana wela kiʻekiʻe no ka loaʻa ʻana o ka acicular ferrite.Hiki iā ia ke loaʻa i ka acicular ferrite ma ke kiʻekiʻe o ka ʻōwili wela ma o ka hoʻohana ʻana i ka ʻenehana alloying niobium kiʻekiʻe.ʻO nā kila paipu ferrite acicular maʻamau he X70 a me X80.

3. Bainite - martensite pipeline kila
Me ka hoʻomohala ʻana o ke kiʻekiʻe kiʻekiʻe a me ke kahe nui o ke kinoea pipeline steel a me ka ʻimi ʻana i ka hōʻemi ʻana i ke kumukūʻai o ka hana pipeline, ʻaʻole hiki i ka acicular ferrite structure ke hoʻokō i nā koi.I ka hopena o ke kenekulia 20, ua puka mai kekahi ʻano kila paipu ikaika loa.ʻO nā māka kila maʻamau ʻo X100 a me X120.Ua hōʻike muaʻia ka X100 e SMI ma Iapana i ka makahiki 1988. Ma hope o nā makahiki o ka noiʻi a me ka hoʻomohalaʻana, ua hoʻokomo muaʻia ka paipu X100 i ka māhele ho'āʻo'enekinia ma 2002. Ua hoʻomakaʻo ExxonMobil oʻAmelika Hui PūʻIa i ka noiʻi ma X120 pipeline steel ma 1993, a ma 1996, ua hui pū me SMI a me NSC o Iapana e hoʻoikaika pū i ke kaʻina noiʻi o X120.I ka makahiki 2004, ua waiho ʻia ke kila X120 no ka manawa mua ma ka ʻāpana pailaka o ka pipeline.

I ka hoʻolālā ʻana o ka bainite-martensitic pipeline steel, ua koho ʻia ka hui maikaʻi loa o ka carbon - manganese - copper - nickel - molybdenum - niobium - vanadium - titanium - boron.Hoʻohana piha ka hoʻolālā ʻana o kēia alloy i nā hiʻohiʻona koʻikoʻi o ka boron i ka hoʻololi hoʻololi.ʻO ka hoʻohui ʻana o ka trace boron (ωB=0.0005% ~ 0.003%) hiki ke hoʻokaʻawale i ka nucleation o ka ferrite ma ka palena o ka palaoa austenite a hoʻololi i ka pihi ferrite i ka ʻākau maopopo. Hoʻopili ʻia ka pihi hoʻololi bainite ma o ka hoʻohaʻahaʻa ʻana i ka wela hoʻoluʻu hope (& LT; 300 ℃) a me ka hoʻomaikaʻi ʻana i ka nui o ka hoʻoilo ʻana (> 20 ℃/s), hiki ke loaʻa pū ka hale bainite haʻahaʻa a me ka lath martensite.ʻO nā kila paipu maʻamau bainite-martensite (B -- M) he X100 a me X120.

4. Ke kila sophorite pipeline
Me ka hoʻomohala ʻana o ke kaiāulu, koi ʻia ke kila pipeline e ʻoi aku ka ikaika a me ka paʻakikī.Inā ʻaʻole hiki ke hoʻokō ʻia ka ʻenehana ʻōwili a me ka hoʻoluʻu ʻana i kēlā mau koi, hiki ke hoʻokō ʻia ke kaʻina hana wela o ka hoʻopaʻa ʻana a me ka hoʻomaʻamaʻa ʻana e hoʻokō i nā koi piha o ka pā mānoanoa, ikaika kiʻekiʻe a lawa ka paʻakikī ma ka hana ʻana i ka sorbitite.I ke kila pipeline, ʻo kēia homogenous sortensite, i ʻike ʻia ʻo homogenous martensite, he ʻano hoʻonohonoho o ke kila pipeline ultra-kiʻekiʻe X120.

Hoʻohui Kimia

L245 Pipeline Steel, Ka helu helu kaumaha :[(anawaena o waho - mānoanoa o ka paia)* mānoanoa o ka paia]*0.02466=kg/m (kaumaha no ka mika)

ʻO ka haku mele ʻana (haʻina nui)…/%															kalapona like (CEV) %
C	Si	Mn	P	S	Nb	V	Ti	Cr	Ni	Cu	N	Mo	B	Als
emi iho a like paha															emi iho a like paha
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