ASTM A691 1Cr CL22 EFW Cov Yeeb Nkab Hlau: Qib Nkag Chrome-Moly rau Kev Pabcuam Kub Siab Duab Tshwj Xeeb

ASTM A691 1Cr CL22 EFW Cov Yeeb Nkab Hlau: Qib Nkag-Qib Chrome-Moly rau Kev Pabcuam Kub Siab

Kev Piav Qhia Luv:

Womic Steeltsim cov yeeb nkab hlau ASTM A691 1Cr CL22 hluav taws xob-fusion-welded (EFW) rau kev pabcuam siab ntawm qhov kub siab. Qib 1Cr (kwv yees li 1% chromium, 0.5% molybdenum) yog los ntawm ASTM A387 Gr.12 lub phaj siab thiab sawv cev rau cov ntsiab lus qis tshaj plaws hauv tsev neeg A691 chrome-moly. Nws tau teev tseg qhov twg qhov kub ua haujlwm tshaj qhov txwv ntawm cov hlau carbon tab sis tseem tsis tau xav tau cov ntsiab lus chromium siab dua ntawm 1.25Cr lossis 2.25Cr. Chav Kawm 22 ua ke kev txo kev ntxhov siab tom qab vuam, kev kuaj xyuas radiographic ntawm cov leeg ntev, thiab kev sim hydrostatic. Nplooj ntawv no npog qhov qib txhais li cas, qhov twg nws nyob hauv chrome-moly kev nce qib, cov ntawv thov project tiag tiag, thiab dab tsi yuav tsum qhia thaum xaj.

Cov lus tseem ceeb uas siv rau hauv nplooj ntawv no: ASTM A691 1Cr CL22, A691 1Cr yeeb nkab, 1Cr EFW yeeb nkab, chrome moly EFW yeeb nkab, A387 Gr.12 welded yeeb nkab, kub siab EFW yeeb nkab, ASTM A691 Chav Kawm 22, 1Cr vs 1.25Cr, A691 1CR CL22 fais fab cog.

Xa email rau peb Cov Lus Qhia Txog Khoom

Cov Khoom Qhia Txog Khoom

Cov Cim Npe Khoom

ASTM A691 1Cr CL22 Txhais Li Cas

ASTM A691 npog cov yeeb nkab carbon thiab alloy steel, electric-fusion-welded nrog filler hlau ntxiv, ua los ntawm lub phaj siab-zoo, tsim nyog rau kev pabcuam siab ntawm qhov kub siab. Lub npe faib ua peb ntu.

Qib 1Crqhia txog lub phaj puag. Qib no sib raug rau ASTM A387 Gr.12, lub phaj hlau chromium-molybdenum alloy nrog cov ntsiab lus chromium nominal ntawm kwv yees li 1% thiab cov ntsiab lus molybdenum ntawm kwv yees li 0.5%. Cov chromium muab kev tiv thaiv oxidation me me thiab lub zog kub siab, thaum molybdenum pab txhawb kev tiv thaiv creep. Cov yeeb nkab cov tshuaj lom neeg thiab cov khoom siv kho tshuab ua raws li A387 Gr.12 phaj specification.

Chav Kawm 22txhais cov kev kho cua sov thiab kev sim. Raws li ASTM A691 chav kawm system, Chav Kawm 22 xav kom cov yeeb nkab kom txo qhov kev ntxhov siab tom qab vuam, qhov longitudinal weld seam kom raug kuaj xyuas radiographically, thiab cov yeeb nkab tiav lawm kom dhau los ntawm kev sim hydrostatic. Chav kawm no muab PWHT thiab RT yam tsis muaj qhov normalization xav tau los ntawm Chav Kawm 32 lossis quenching-thiab-tempering ntawm Chav Kawm 42.

EFWqhia txog txoj kev tsim khoom: cov hlau alloy phaj yog tsim rau hauv cov duab cylindrical, thiab cov kab sib txuas ntev yog welded siv submerged arc vuam nrog cov hlau ntxiv.

ASTM A691 1Cr CL22 Txhais Li Cas

EFWqhia txog txoj kev tsim khoom: cov hlau alloy phaj yog tsim rau hauv cov duab cylindrical, thiab cov kab sib txuas ntev yog welded siv submerged arc vuam nrog cov hlau ntxiv.

Cov Khoom Siv Tshuaj thiab Khoom Siv Kho Tshuab

Vim tias 1Cr khi rau A387 Gr.12 phaj, cov yeeb nkab tiav lawm cov tshuaj lom neeg thiab lub zog ua raws li tus qauv phaj ntawd.

Vaj tse	Tus nqi ib txwm muaj
Chromium	~1.00%
Molybdenum	~0.50%
Lub zog tensile	Txawv ntawm qhov kub ntawm phaj, feem ntau yog 415–585 MPa
Lub Zog Tawm	Txawv raws li cua sov ntawm lub phaj
Kub Tshaj Plaws Ua Haujlwm	Txog li 593 ° C (1100 ° F) ib lub A691 scope

Cov txiaj ntsig xeem tiag tiag ntawm daim ntawv pov thawj zeb qhia txog qhov kub tshwj xeeb thiab phaj siv. Chav kawm 22 kev txo kev ntxhov siab tsis hloov pauv cov tshuaj lom neeg hauv paus.

Kev Sib Piv Qib: 1Cr vs 1.25Cr vs 2.25Cr

Qib 1Cr nyob rau hauv qab ntawm A691 chrome-moly progression. Kev nkag siab qhov twg nws haum pab txiav txim siab thaum twg nws yog qhov kev xaiv zoo piv rau thaum twg qib siab dua yog qhov tsim nyog.

Qib	Phaj Pib	Cov Ntsiab Lus Cr	Cov Ntsiab Lus Mo	Tus Tsav Tsheb Tseem Ceeb rau Kev Xaiv
1Cr	A387 Qib 12	~1.00%	~0.50%	Kub nruab nrab, tus nqi alloy qis dua
1.25Cr	A387 Qib 11	1.00–1.50%	0.45–0.65%	Cov kab ua pa kub thiab cov txheej txheem dav dav
2.25Cr	A387 Qib 22	2.00–2.50%	0.90–1.10%	Kub dua, kev pabcuam hydrogen

1Cr raug xaiv thaum qhov kub thiab txias tsim thiab siab tso cai rau cov ntsiab lus alloy qis dua 1.25Cr, feem ntau rau qhov kev pabcuam kub nruab nrab qhov twg qhov kev ntxhov siab tso cai ntawm A387 Gr.12 txaus. Nws pheej yig dua li 1.25Cr vim tias cov tshuaj lom neeg ntawm lub phaj yog tsawg dua alloyed, tab sis qhov sib txawv ntawm kev ua tau zoo ntawm ob qib yog qhov me me. Hauv kev xyaum, ntau lub chaw tsim hluav taws xob cov lus qhia tsis siv neeg rau 1.25Cr rau kev rov ua kom sov thiab cov kav dej vim tias qhov sib txawv ntawm tus nqi yog me me thiab cov chromium siab dua muab qhov sib txawv ntawm kev tiv thaiv oxidation.

Chav Kawm 22 thiab A691 Chav Kawm System

Chav Kawm 22 yog ib qho ntawm ntau chav kawm hauv ASTM A691 uas tswj kev kho cua sov, kev thaij duab hluav taws xob, thiab kev sim siab.

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 kub heev hauv cov chaw tsim hluav taws xob, Chav Kawm 42 feem ntau yog qhov yuav tsum tau ua hauv EPC cov lus qhia 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 txaus rau cov lej tsim thiab cov xwm txheej ua haujlwm tsis xav tau cov khoom phaj normalized hauv cov kav dej tiav.

Qhov Loj thiab Kev Xaiv Tsim Khoom

Womic tsim cov yeeb nkab A691 1Cr CL22 siv LSAW nrog ib txoj kab ncaj lossis ob txoj kab ncaj. ASTM A691 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 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

Ib Txoj Kab Ncaj vs Ob Txoj Kab Ncaj

Ib txoj kab ncaj nraimsiv thaum ib lub phaj tuaj yeem dov mus rau hauv lub tog raj kheej puv. Ntawm Womic qhov no npog OD txog li 1,422 hli nrog phab ntsa tuab txog li 50.8 hli ntawm kab JCOE. Ib qho longitudinal weld tsom mus rau kev tshuaj xyuas thiab PWHT ntawm ib qho seam.

Ob chav ncaj seamsiv thaum txoj kab uas hla lossis phab ntsa tuab tshaj qhov uas ib lub phaj tuaj yeem tsim tau. Ob lub phaj raug dov ua ib nrab-lub tog raj kheej thiab txhua lub yog welded longitudinally. Qhov no npog OD txij li ntawm 1,200 hli txog 2,540 hli nrog phab ntsa tuab txog li 75 hli lossis ntau dua.

Cov ntawv thov rau A691 1Cr CL22 Yeeb Nkab

Qib 1Cr yog siv rau hauv kev pabcuam kub nruab nrab uas cov hlau carbon tsis txaus tab sis cov qib chrome-moly siab dua tseem tsis tau xav tau.

Lub chaw tsim hluav taws xob rov ua kom sov cov kav dej txias—A691 1CR CL22 tau siv rau hauv cov phiaj xwm fais fab hauv Suav teb rau kev rov ua kom sov cov kab txias, hauv OD ntau ntawm 610–1219 hli thiab phab ntsa tuab ntawm 9.52–42 hli.

Cov taub hau hlau lojqhov twg cov yeeb nkab seamless saum NPS 24 tsis yooj yim siv

Cov kab hloov pauv kub siabnyob rau hauv cov chaw ua roj thiab cov nroj tsuag petrochemical ua haujlwm nyob rau hauv qhov nruab nrab creep ntau yam

Cov kav dej sab nraud ntawm lub boilerqhov twg qhov kub tsim qauv poob rau hauv qhov ntau ntawm kev ntxhov siab ntawm A387 Gr.12

Cov Ntaub Ntawv Txog Qhov Project

Rov Ua Kom Cov Kav Dej Txias Ua Kub Dua (Tuam Txhab Fais Fab Tuam Tshoj, 2011)

Ib qhov project fais fab hauv Suav teb tau teev tseg ASTM A691 1CR CL22 LSAW yeeb nkab rau kev rov ua kom sov cov kav dej txias. Cov yeeb nkab tau tsim tawm hauv OD ntau ntawm 610–1219 hli nrog phab ntsa tuab ntawm 9.52 hli txog 42 hli. Qhov project no tau sau tseg hauv daim ntawv tshaj tawm kev tshaj lij uas tau nthuav tawm ntawm 14th China (Northern) Steel Pipe and Pipeline Technology Conference hauv xyoo 2011, lees paub qib kev lees txais hauv cov ntawv thov fais fab hauv Suav teb qhov twg xav tau RT thiab PWHT tag nrho. Tib txoj kev tsim khoom siv rau qhov project no siv rau 1Cr CL22 cov xaj tam sim no.

Cov Kav Dej Siab Siab (Tuam Tshoj Thermal Power, 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 pauv cov kav dej siab siab. Thaum qhov project no siv qib 2.25Cr, nws qhia txog kev siv cov yeeb nkab A691 CL22 EFW hauv kev kho thiab txhim kho cov chaw tsim hluav taws xob hauv Suav teb. Qhov kev ntsuas suav nrog kev teeb tsa cov yeeb nkab nrog PWHT thiab NDT, lees paub tias qib A691 CL22 tseem yog qhov kev xaiv tus qauv rau cov kav dej kub siab uas cov yeeb nkab tsis muaj lossis tsis muaj txiaj ntsig.

Kev Pabcuam Kub Siab rau Chaw Kho Roj thiab Petrochemical

Cov yeeb nkab 1Cr kuj tau teev tseg rau cov kab hloov pauv refinery thiab cov kav dej ua haujlwm petrochemical qhov twg qhov kub ua haujlwm xav tau chrome-moly kev tsim kho tab sis cov txheej txheem tsis muaj cov sulfur lossis hydrogen theem uas yuav hais txog 2.25Cr lossis 5Cr. Cov ntsiab lus qis dua ua rau 1Cr weldable ntau dua thiab pheej yig dua li cov qib chrome-moly siab dua, thaum tseem muab kev tiv thaiv creep zoo dua li cov hlau carbon.

Cov Ntaub Ntawv Zoo

Txhua qhov kev xa khoom ntawm A691 1Cr CL22 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)

Ntim thiab Xa Khoom

Cov kav dej muaj cov qhov kawg uas muaj cov hau yas los yog cov qhov kawg tiaj tiaj raws li tau teev tseg. Cov nplaim ntawm cov kav dej tau txais ib txheej tiv thaiv uas tsim nyog rau kev thauj mus los thiab kev khaws cia. Cov kav dej me thiab nruab nrab muaj cov hlua hlau; cov kav dej loj thiab cov kav dej phab ntsa hnyav raug xa ib leeg nrog lub thawv ntoo. Kev tshuaj xyuas ua ntej xa khoom los ntawm lwm tus neeg tuaj yeem npaj tau.

Cov Lus Nug Feem Ntau

Q: Qhov txawv ntawm 1Cr thiab 1.25Cr hauv ASTM A691 yog dab tsi?

1Cr siv A387 Gr.12 phaj nrog kwv yees li 1% chromium, thaum 1.25Cr siv A387 Gr.11 phaj nrog 1.00–1.50% chromium. Qhov sib txawv ntawm cov ntsiab lus alloy yog me me, thiab ob qib muaj cov khoom zoo sib xws hauv qhov kub siab. 1Cr feem ntau pheej yig dua, thaum 1.25Cr feem ntau teev nyob rau hauv cov kav dej fais fab vim tias chromium siab dua me ntsis muab kev tiv thaiv oxidation ntxiv thiab qib muaj ntau dua los ntawm cov chaw ua phaj. Kev xaiv ntawm lawv feem ntau yog nyob ntawm qhov kev nyiam ntawm qhov project thiab qhov muaj phaj.

Q: Chav Kawm 22 txhais li cas rau A691 1Cr yeeb nkab?

Chav Kawm 22 txhais tau tias cov yeeb nkab raug txo qhov kev ntxhov siab tom qab vuam, qhov txuas ntawm qhov txuas ntev tau txais kev kuaj xyuas radiographic tag nrho, thiab cov yeeb nkab tiav lawm tau kuaj hydrostatically. Chav kawm no yog rau kev pabcuam kub siab uas xav tau PWHT los tswj qhov vuam thiab thaj chaw kub, thiab qhov twg tag nrho RT tau teev tseg rau kev txheeb xyuas qhov tseeb ntawm qhov vuam.

Q: Koj puas tuaj yeem muab A691 1Cr nrog kev sim cuam tshuam?

Yog. Kev kuaj qhov cuam tshuam Charpy V-notch yog qhov yuav tsum tau ua ntxiv raws li ASTM A691. Qhia meej qhov kub thiab txias ntawm kev kuaj, kev taw qhia ntawm cov qauv, thiab cov qauv lees txais hauv daim ntawv xaj yuav khoom. Kev kuaj qhov cuam tshuam rau cov yeeb nkab chrome-moly tsis tshua muaj ntau dua li cov hlau carbon uas kub tsawg, tab sis tuaj yeem npaj tau thaum cov lus qhia ntawm qhov project xav tau.

Q: Qhov kub siab tshaj plaws rau A691 1Cr yog dab tsi?

Cov lus qhia tshwj xeeb A691 nominally npog kev pabcuam txog li 593 ° C (1100 ° F) rau cov qib chrome-moly. Hauv qhov ntau ntawd, qhov kev ntxhov siab tso cai rau A387 Gr.12 txo qis thaum kub nce. Rau kev pabcuam saum toj no kwv yees li 540–565 ° C, cov qib chromium siab dua xws li 1.25Cr lossis 2.25Cr feem ntau nyiam rau kev nkag mus ntxiv thiab kev tiv thaiv oxidation.

Q: Puas yog A691 1Cr zoo ib yam li A387 Gr.12?

Tsis yog raws nraim. A387 Gr.12 yog cov hlau phaj specification. A691 1Cr yog cov yeeb nkab specification uas siv A387 Gr.12 phaj ua cov khoom pib, tsim thiab welds nws rau hauv yeeb nkab, siv cov cua sov kho uas xav tau los ntawm chav kawm, thiab ua qhov kev sim tshwj xeeb. Cov yeeb nkab tiav lawm muaj chemistry thiab lub zog sib xws nrog A387 Gr.12, tab sis cov khoom tsim thiab cov txheej txheem sim yog tswj hwm los ntawm A691.

Q: Kuv puas yuav tsum xaiv ib txoj kab ncaj nraim lossis ob txoj kab ncaj nraim?

Lub tshuab zeb xaiv qhov kev teeb tsa ntawm cov xov raws li qhov loj me uas tau txiav txim. Ib txoj xov ncaj nraim npog OD txog li 1,422 hli thiab phab ntsa tuab txog li 50.8 hli ntawm Womic. Ob txoj xov ncaj nraim npog cov kab uas loj dua thiab phab ntsa hnyav dua. Yog tias koj qhov kev qhia tshwj xeeb ntawm qhov project txwv tsis pub siv hom xov, hais qhov no hauv daim ntawv yuav khoom.

Tiv tauj Womic Steelrau ASTM A691 1Cr CL22 EFW cov lus hais txog cov yeeb nkab. Muab qhov ntev ntawm sab nraud, phab ntsa tuab, qhov ntau, qhov 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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Tom ntej no: ASTM A691 1.25Cr CL22 EFW Cov Yeeb Nkab Hlau: Kev Tsim Khoom & Cov Lus Qhia Tshwj Xeeb