ASTM A691 Chrome Moly EFW Cov Yeeb Nkab Hlau: Cov Lus Qhia Txog Qib Ua tiav rau Kev Pabcuam Kub Siab thiab Siab Siab Duab Tshwj Xeeb

ASTM A691 Chrome Moly EFW Cov Yeeb Nkab Hlau: Cov Lus Qhia Qib Ua Tiav rau Kev Pabcuam Kub Siab thiab Siab

Kev Piav Qhia Luv:

Womic Steeltsim cov yeeb nkab hlau ASTM A691 hluav taws xob-fusion-welded (EFW) hauv ntau yam chrome-moly qib rau kev pabcuam siab ntawm qhov kub siab. Nplooj ntawv no yog qhov nkag mus rau tsev neeg khoom A691 - nws piav qhia txog qhov kev qhia tshwj xeeb npog, qib nce qib li cas los ntawm 1Cr mus rau 9Cr, Chav Kawm 22 txhais li cas thoob plaws tsev neeg, thiab txuas mus rau nplooj ntawv qib ib leeg rau cov lus qhia ntxaws ntxaws, cov ntaub ntawv project, thiab cov ntaub ntawv xaj.

Cov lus tseem ceeb uas siv rau hauv nplooj ntawv no: ASTM A691 chrome moly EFW yeeb nkab, A691 EFW yeeb nkab hlau, chrome moly welded yeeb nkab, kub siab EFW yeeb nkab, A691 qib daim ntawv qhia, A691 Chav Kawm 22, A387 phaj welded yeeb nkab, 1Cr 1.25Cr 2.25Cr 5Cr 9Cr EFW yeeb nkab.

Xa email rau peb Cov Lus Qhia Txog Khoom

Cov Khoom Qhia Txog Khoom

Cov Cim Npe Khoom

ASTM A691 Npog Dab Tsi

ASTM A691 npog cov yeeb nkab carbon thiab alloy steel, hluav taws xob-fusion-welded nrog cov hlau ntxiv, tsim los ntawm lub phaj siab-zoo, tsim nyog rau kev pabcuam siab ntawm qhov kub siab. Cov lus qhia tshwj xeeb nominally npog cov yeeb nkab 16 nti (400 mm) sab nraud txoj kab uas hla thiab loj dua nrog phab ntsa tuab txog li 3 nti (75 mm). Cov txheej txheem EFW siv cov hlau ntxiv thiab tso cai rau kev siv cov phaj uas tau dov thiab vuam rau hauv cov duab cylindrical, uas ua rau cov yeeb nkab loj-txoj kab uas hla thiab phab ntsa hnyav ua tau qhov twg cov yeeb nkab seamless tsis muaj lossis tsis pheej yig.

Tsev neeg A691 yog tsim los ntawm cov qib phaj chromium-molybdenum los ntawm ASTM A387. Txhua qib A691 sib raug rau qib phaj A387 tshwj xeeb, thiab cov yeeb nkab tiav lawm cov tshuaj lom neeg thiab cov khoom siv kho tshuab ua raws li cov lus qhia ntawm phaj ntawd.

A691 Qib Kev Nce Qib: 1Cr txog 9Cr

Cov qib no tsim cov chromium thiab molybdenum uas nce ntxiv, txhua qib haum rau cov chaw kub thiab txias uas kub zuj zus. Lub rooj hauv qab no piav qhia txog tsev neeg thiab cov kev sib txuas mus rau nplooj ntawv qhia ntxaws rau txhua qib.

Qib	Phaj Pib	Cov Ntsiab Lus Cr	Cov Ntsiab Lus Mo	Tus Tsav Tsheb Tseem Ceeb rau Kev Xaiv	Nplooj Ntawv Qhia Txog
1Cr	A387 Qib 12	~1.00%	~0.50%	Kub nruab nrab, tus nqi alloy qis dua	ASTM A691 1Cr CL22
1.25Cr	A387 Qib 11	1.00–1.50%	0.45–0.65%	Cov kab ua pa kub thiab cov txheej txheem dav dav	ASTM A691 1.25Cr CL22
2.25Cr	A387 Qib 22	2.00–2.50%	0.90–1.10%	Kev pabcuam hydrogen, lub zog fais fab nroj tsuag	ASTM A691 2.25Cr CL22
5Cr	A387 Qib 5	4.00–6.00%	0.45–0.65%	Kev tiv thaiv sulfidation ntawm lub chaw ua roj refinery	ASTM A691 5Cr CL22
9Cr	A387 Qib 9	8.00–10.00%	0.90–1.10%	Kev oxidation hnyav, lub voj voog fais fab siab heev	ASTM A691 9Cr CL22

Qhov kev nce qib tsis yog qhov tsis raws cai. Txhua kauj ruam nce ntxiv hauv cov ntsiab lus chromium yuav ntxiv kev tiv thaiv oxidation, lub zog kub siab, thiab kev tiv thaiv rau cov txheej txheem xeb tshwj xeeb xws li sulfidation thiab hydrogen tawm tsam. Qhov kev pauv pauv yog tus nqi siab dua, kev vuam thiab kev kho cua sov ntau dua, thiab txo qis kev muaj phaj. Kev xaiv qib zoo txhais tau tias phim cov ntsiab lus alloy rau qhov chaw ua haujlwm tiag tiag, tsis yog tsuas yog xaiv qib siab tshaj plaws muaj.

Chav Kawm 22 hauv Tsev Neeg A691

Chav Kawm 22 yog ib qho ntawm cov chav kawm uas feem ntau teev tseg thoob plaws A691 qib. Nws yuav tsum tau txo kev ntxhov siab tom qab vuam, kev kuaj xyuas radiographic tag nrho ntawm cov leeg ntev, thiab kev sim hydrostatic. Rau cov qib chrome-moly siab dua - tshwj xeeb tshaj yog 5Cr thiab 9Cr - cov kauj ruam txo kev ntxhov siab yog qhov tseem ceeb heev rau hlau, tsis yog tsuas yog kev ua raws li cov lus qhia xwb, vim tias cov hlau no tsim cov qauv tawv hauv qhov vuam thiab thaj chaw cuam tshuam los ntawm cua sov uas yuav tsum tau tempered kom rov qab muaj zog.

Chav Kawm	Kev Kho Mob Kub	Kev thaij duab hluav taws xob	Kev Ntsuas Siab	Kev Siv Ib Txwm Muaj
12	Tsis muaj dab tsi	Tag Nrho RT	Yog	Raws li-welded, kev pabcuam nruab nrab
22	Kev Nyuaj Siab Txo	Tag Nrho RT	Yog	Kev pabcuam kub siab nrog PWHT
32	Ua kom zoo li qub	Tag Nrho RT	Yog	Kev thov kom muaj zog dua
42	Normalized + Tempered	Tag Nrho RT	Yog	Cov kav dej kub siab tseem ceeb

Rau cov kav dej fais fab tseem ceeb, Chav Kawm 42 feem ntau tau teev tseg hauv cov ntaub ntawv EPC vim nws ua ke tag nrho RT nrog kev kho cua sov normalized-and-tempered. Chav Kawm 22 yog qhov tsim nyog qhov twg kev txo kev ntxhov siab ib leeg ua tau raws li cov cai tsim thiab cov xwm txheej ua haujlwm tsis xav tau cov khoom phaj normalized hauv cov kav dej tiav.

Qhov Loj Ntau Hauv Tsev Neeg A691

Womic tsim cov yeeb nkab A691 chrome-moly hauv txhua qib teev saum toj no siv LSAW nrog ib lossis ob txoj kab ncaj nraim.

Cov Qauv	Ntau yam
Sab Nraud Txoj Kab uas hla	16″ txog 100″ (400 mm txog 2,540 mm)
Phab ntsa tuab	6 hli mus txog 75 hli (hnyav dua raws li qhov thov)
Ntev	6 m, 12 m tus qauv; txog li 18 m lossis 24 m yog tias thov
Txoj Kev Tsim Khoom	EFW / LSAW nrog cov hlau sau
Hom Seam	Ib txoj kab ncaj nraim los yog ob txoj kab ncaj nraim
Cov Qib	1Cr, 1.25Cr, 2.25Cr, 5Cr, 9Cr

Ib Txoj Kab Ncaj vs Ob Txoj Kab Ncaj

Ib txoj kab ncaj nraimnpog OD txog li 1,422 hli nrog phab ntsa tuab txog li 50.8 hli ntawm kab JCOE. Ib qho vuam ntev tsom mus rau kev tshuaj xyuas thiab PWHT ntawm ib qho seam.

Ob chav ncaj seamnpog OD txij li ntawm 1,200 hli txog 2,540 hli nrog phab ntsa tuab txog li 75 hli lossis ntau dua. Ob lub phaj raug dov ua ib nrab-lub tog raj kheej thiab txhua lub yog welded longitudinally. Qhov kev pauv pauv yog ob lub vuam seams los tshuaj xyuas thiab kho cua sov, tab sis nws ua rau cov yeeb nkab loj-txoj kab uas hla uas ib leeg tsis tuaj yeem tsim tau.

Cov Ntawv Thov Thoob Plaws Tsev Neeg A691

Qhov kev nce qib ntawm qib qhia ncaj qha rau qhov kub thiab txias ntawm daim ntawv thov thiab qhov hnyav ntawm kev xeb.

Cov kav dej ua los ntawm lub zog fais fab—1Cr thiab 1.25Cr rau kev rov ua kom sov cov kav dej txias thiab cov kav dej kub nruab nrab; 2.25Cr rau cov kav dej tseem ceeb thiab rov ua kom sov kub qhov twg qhov kub tshaj 1.25Cr ntau yam; 9Cr rau kev pabcuam supercritical thiab ultra-supercritical

Kev ua dej ntawm lub chaw ua roj refinery—2.25Cr rau cov kav dej hydrocracker thiab hydrotreater uas xav tau kev tiv thaiv hydrogen tawm tsam

Refinery Reforming thiab Visbreaking—5Cr rau kev tiv taus sulfidation ntawm 400–500 ° C

Cov taub hau hlau loj—txhua qib uas cov yeeb nkab seamless saum NPS 24 tsis yooj yim siv

Cov kav dej siab siab Petrochemical-qib xaiv los ntawm qhov kub thiab txias ua haujlwm thiab kev xeb ntawm cov kwj deg.

Cov Ntaub Ntawv Txog Tej Haujlwm Thoob Plaws Tsev Neeg A691

Cov Kav Dej Ua Kom Sov Dua Rau Lub Hoobkas Fais Fab (Tuam Tshoj, 2011)

Ib qhov project fais fab hauv Suav teb tau siv ASTM A691 1CR CL22 thiab 2.25Cr CL22 LSAW yeeb nkab rau kev rov ua kom cov kav dej txias, hauv OD ntau ntawm 610–1219 hli thiab phab ntsa tuab ntawm 9.52–42 hli. Qhov project no tau sau tseg ntawm 14th China (Northern) Steel Pipe and Pipeline Technology Conference thiab lees paub qhov kev lees txais ntawm A691 CL22 LSAW yeeb nkab hauv Suav teb cov kav dej fais fab uas yuav tsum muaj RT thiab PWHT tag nrho.

Kev Hloov Cov Kav Dej Siab Siab (Tuam Tshoj, 2024)

Ib qhov project txij nkawm xyoo 2024 ntawm lub chaw tsim hluav taws xob thermal supercritical 350 MW hauv Suav teb tau teev tseg A691 Gr.2-1/4Cr CL22 yeeb nkab rau kev hloov cov kav dej siab siab. Qhov kev ntsuas suav nrog kev teeb tsa yeeb nkab nrog PWHT thiab NDT, lees paub tias A691 CL22 qib tseem yog qhov kev xaiv tus qauv rau kev txij nkawm lub chaw tsim hluav taws xob kub siab uas cov yeeb nkab tsis muaj lossis tsis muaj txiaj ntsig.

Cov Kav Dej Ua Haujlwm ntawm Lub Hoobkas Refinery (Middle East)

Ib qhov project refinery hauv Middle East tau teev tseg A691 2.25Cr CL22 EFW yeeb nkab rau hydroprocessing unit piping hauv OD 610 mm thiab 762 mm, phab ntsa tuab 25 mm thiab 30 mm, nrog rau tag nrho RT thiab PWHT ib chav kawm 22. Qib 2.25Cr tau xaiv rau kev tiv taus hydrogen tawm tsam ntawm qhov kub ua haujlwm thiab hydrogen ib feem siab ntawm hydrotreater.

Cov Ntaub Ntawv Zoo Thoob Plaws Tsev Neeg

Txhua qhov kev xa khoom ntawm A691 chrome-moly yeeb nkab los ntawm Womic Steel muaj xws li:

● Daim ntawv pov thawj xeem EN 10204 3.1 nrog cov tshuaj lom neeg sib xyaw thiab cov txiaj ntsig ntawm kev xeem kho tshuab uas taug qab mus rau tus lej cua sov ntawm lub phaj
● Daim ntawv qhia txog kev kuaj mob radiographic rau qhov txuas weld
● Cov ntaub ntawv xeem hydrostatic
● Daim ntawv qhia txog kev kho cua sov tom qab vuam nrog qhov kub thiab lub sijhawm tuav
● Daim ntawv qhia txog kev soj ntsuam qhov ntev
● Kev tshuaj xyuas los ntawm lwm tus neeg muaj thaum thov (SGS, BV, TÜV)

Cov Lus Nug Feem Ntau

Q: Kuv yuav tsum xaiv qib A691 twg rau kuv daim ntawv thov?

Qib yog txiav txim siab los ntawm qhov kub thiab txias ua haujlwm, cov tshuaj lom neeg ntawm cov txheej txheem, thiab cov lus qhia kev ntxhov siab uas tso cai rau cov cai tsim. Ua ib qho kev qhia dav dav: 1Cr thiab 1.25Cr rau cov pa dej kub nruab nrab thiab cov kab ua haujlwm; 2.25Cr rau cov pa dej kub siab dua thiab kev pabcuam hydrogen; 5Cr rau kev pabcuam sulfidation hauv chaw ua roj; 9Cr rau kev pabcuam fais fab fais fab kub siab tshaj plaws hauv chrome-moly ntau yam. Cov nplooj ntawv qib ntxaws ntxaws txuas rau saum toj no muab cov tshuaj lom neeg tshwj xeeb, cov kev txwv kub, thiab cov ntawv sau rau txhua qib.

Q: Qhov txawv ntawm A691 thiab A671 yog dab tsi?

Ob qho lus qhia no suav nrog cov yeeb nkab hluav taws xob-fusion-welded nrog cov hlau filler, ua los ntawm cov phaj siab-zoo. Qhov sib txawv yog tsev neeg phaj hauv paus. A671 siv cov phaj carbon steel qib (CA, CB, CC series) rau kev pabcuam huab cua thiab qis dua. A691 siv cov phaj chromium-molybdenum alloy qib (1Cr txog 9Cr) rau kev pabcuam siab ntawm qhov kub siab. Lub kaw lus chav kawm rau kev kho cua sov, radiography, thiab kev sim zoo sib xws thoob plaws ob qho lus qhia.

Q: Chav Kawm 22 txhais li cas thoob plaws qib A691?

Chav Kawm 22 txhais tau tias kev txo kev ntxhov siab tom qab vuam, kev kuaj xyuas radiographic tag nrho ntawm cov leeg ntev, thiab kev sim hydrostatic. Rau cov qib chrome-moly siab dua xws li 5Cr thiab 9Cr, cov kauj ruam txo kev ntxhov siab yog qhov tseem ceeb heev rau hlau vim tias cov hlau no tsim cov qauv tawv thaum vuam uas yuav tsum tau tempered kom rov qab muaj zog. Daim ntawv qhia PWHT yuav tsum tau tshuaj xyuas ua ib feem ntawm pob ntawv sau.

Q: Koj puas tuaj yeem muab cov qib sib xyaw ua ke hauv ib qho kev txiav txim?

Yog. Womic tsim tag nrho cov qib A691 uas teev nyob rau nplooj ntawv no. Yog tias ib qhov project xav tau ntau qib rau ntau yam kev pabcuam sib txawv—piv txwv li, 1.25Cr rau cov kab rov ua kom sov thiab 2.25Cr rau cov pa dej loj—cov qib tuaj yeem tsim thiab sau tseg sib cais hauv tib qho kev txiav txim, nrog txhua qib tau txais nws daim ntawv pov thawj zeb, daim ntawv qhia RT, thiab daim ntawv qhia PWHT.

Q: Lub sijhawm ua khoom rau A691 chrome-moly yeeb nkab yog dab tsi?

Lub sijhawm ua khoom nyob ntawm qib, qhov loj, thiab ntau npaum li cas. Lub sijhawm ua khoom txheem rau cov yeeb nkab Class 22 hauv qhov ntau thiab tsawg yog 30–45 hnub. Cov qib chrome-moly siab dua xws li 5Cr thiab 9Cr yuav xav tau lub sijhawm ua khoom ntev dua vim muaj phaj thiab cov kev xav tau PWHT ntau dua. Tiv tauj Womic Steel nrog qib tshwj xeeb, qhov loj, thiab ntau npaum li cas kom paub tseeb tias lub sijhawm ua khoom.

Tiv tauj Womic Steelrau ASTM A691 chrome-moly EFW yeeb nkab cov lus hais. Muab qib, sab nraud txoj kab uas hla, phab ntsa tuab, ntau npaum li cas, ntev, qhov kawg tiav, PWHT cov kev cai, thiab lwm yam kev kuaj ntxiv. Peb yuav paub meej tias muaj thiab lub sijhawm ua haujlwm hauv ib hnub ua haujlwm.

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