LSAW carbon steel yeeb nkab, tseem hu ua Longitudinal Submerged Arc Welded yeeb nkab, yog cov khoom lag luam tseem ceeb hauv kev lag luam dav hlau carbon steel yeeb nkab. Nws yog dav siv nyob rau hauv siab - siab roj thiab roj kis kab, dej conveyance systems, offshore platforms, thiab hnyav structural tej yaam num. Piv nrog ERW lossis HFW kav dej, LSAW kav feem ntau yog tsim nyob rau hauv cov kab loj dua thiab cov phab ntsa tuab, ua rau lawv tsim nyog rau kev xav tau kev pab cuam nyob rau hauv qhov siab, sab nraud loads, thiab ib puag ncig kev ntxhov siab yuav tsum tau txiav txim siab ib txhij.
Lub ntsiab lus tseem ceeb ntawm LSAW carbon steel yeeb nkab yog nws qhov ntev vuam seam ua los ntawm submerged arc vuam. Hlau daim hlau ntau dua li cov coils yog siv los ua cov khoom siv raw, thiab cov txheej txheem tsim tso cai rau kev yooj yim dua hauv cov phab ntsa thickness thiab txoj kab uas hla. Yog li ntawd, LSAW carbon steel kav yog nquag teev nyob rau hauv ntev - kis tau tus mob pipelines thiab loj -scale infrastructure tej yaam num uas txhua yam muaj zog thiab seem stability yog thawj tsim qauv.
Manufacturing txheej txheem ntawmLSAW Carbon Steel Yeeb Nkab
Plate Forming thiab Longitudinal Vuam
Kev tsim cov LSAW carbon steel yeeb nkab pib nrog siab - zoo carbon steel phaj, feem ntau yog tsim los ntawm kev tswj dov lossis thermo- kev ua tshuab ua kom tau raws li qhov yuav tsum tau muaj lub zog thiab toughness. Lub phaj yog thawj ntug milled los xyuas kom meej qhov sib koom ua ke geometry, tom qab ntawd tsim rau hauv cov duab cylindrical siv UOE forming lossis JCOE txoj kev siv tshuab. Nyob rau hauv cov txheej txheem UOE, lub phaj yog nias rau hauv ib tug U zoo, ces mus rau hauv ib tug O zoo, ua raws li mechanical expansion. Nyob rau hauv cov txheej txheem JCOE, cov phaj yog maj mam tsim los ntawm kev sib txuas ua ke ua ntej nthuav dav.
Submerged arc welding yog tom qab ntawd ua raws li cov seam longitudinal. Vuam feem ntau yog ua los ntawm ob sab hauv thiab sab nraud ntawm cov yeeb nkab, kom ntseeg tau tias kev nkag mus rau tag nrho thiab kev ua haujlwm zoo. Lub vuam yog tiv thaiv los ntawm granular flux, uas tiv thaiv lub pas dej molten los ntawm atmospheric paug thiab stabilizes arc kev ua tau zoo. Tom qab welding, cov yeeb nkab yuav raug kho kom zoo dua qub kom zoo dua qub thiab txo qhov kev ntxhov siab.
Dimensional Range thiab Mechanical Properties
LSAW carbon steel kav yog tshwj xeeb tshaj yog muaj nuj nqis rau lawv txoj kab uas hla loj thiab tuab phab ntsa muaj peev xwm. Cov lus hauv qab no qhia txog cov kev qhia tshwj xeeb.
| Parameter | Hom ntau yam rau LSAW Carbon Steel Pipe |
|---|---|
| Sab nraud txoj kab uas hla | 406-1422 hli |
| Phab ntsa Thickness | 6mm-40 hli |
| Ntev | 8 m – 12 m |
| Qib khoom | API 5L B, X52, X60, X65, X70 |
| Manufacturing Standard | API 5L, ASTM A252, EN 10219 |
Mechanical zog nyob ntawm seb cov qib uas tau xaiv thiab cov phaj ntau lawm. Cov kav dej qib siab xws li X65 lossis X70 feem ntau yog siv rau hauv siab - cov kav dej siab siab qhov twg lub zog - mus rau - qhov hnyav piv thiab pob txha toughness yog qhov tseem ceeb.
| Qib | Yam tsawg kawg nkaus tawm lub zog MPa | Yam tsawg kawg Tensile zog MPa | Daim ntawv thov |
|---|---|---|---|
| API 5L X52 | Ntau dua lossis sib npaug rau 360 | Ntau dua lossis sib npaug rau 460 | Cov roj sib sau ua ke |
| API 5L X60 | Ntau dua lossis sib npaug li 415 | Ntau dua lossis sib npaug li 520 | Gas kis tau tus mob |
| API 5L X65 | Ntau dua lossis sib npaug li 450 | Ntau dua lossis sib npaug li 535 | Siab - cov kab hauv siab |
| API 5L X70 | Ntau dua lossis sib npaug rau 485 | Ntau dua lossis sib npaug li 570 | Ntev -ntaus roj pipelines |
Cov qib kev ua tau zoo no qhia tau hais tias LSAW carbon steel yeeb nkab muaj peev xwm ua tau raws li cov qauv thiab cov kev xav tau ntawm cov tshuab loj.
Cov yam ntxwv ntawm tus yam ntxwv thiab engineering kev ua tau zoo
Siab Load Bearing Capacity
Vim tias cov kav dej LSAW yog tsim los ntawm cov phaj es tsis yog sawb, lawv tuaj yeem ua tiav cov phab ntsa tuab dua yam tsis muaj kev cuam tshuam qhov loj me. Qhov no ua rau muaj kev tiv thaiv siab dua rau sab hauv siab thiab cov khoom siv sab nraud. Hauv cov kav dej faus, LSAW carbon steel yeeb nkab yuav tsum tiv taus av siab, tsheb thauj mus los, thiab muaj peev xwm txav hauv av. Cov phab ntsa tuab dua thiab tswj cov vuam zoo muab kev ruaj ntseg zoo dua.
Nyob rau hauv ib puag ncig offshore, LSAW carbon steel kav feem ntau raug xaiv rau risers thiab platform qauv qhov twg khoov kev nyuaj siab, yoj loading, thiab corrosion yuav tsum tau txiav txim siab ib txhij. Kev xaiv cov khoom tsim nyog thiab vuam zoo yog qhov tseem ceeb los xyuas kom muaj kev qaug zog tiv thaiv nyob rau hauv cyclic loading.
Weld Integrity thiab Inspection
Lub longitudinal weld seam yog qhov tseem ceeb tshaj plaws hauv LSAW carbon steel yeeb nkab. Yog li ntawd, kev tshuaj xyuas nruj yog ua thoob plaws hauv kev tsim khoom. Tsis yog-kev kuaj kev puas tsuaj xws li kuaj ultrasonic, kuaj hluav taws xob, thiab kuaj cov hlau nplaum feem ntau yog siv los kuaj xyuas qhov tsis xws luag sab hauv thiab saum npoo. Kev kuaj hydrostatic kuj tseem ua tau los xyuas qhov kev ua haujlwm siab thiab kev ncaj ncees tag nrho.
Mechanical expansion tom qab vuam txhim kho qhov tseeb qhov tseeb thiab txo qis kev ntxhov siab nyob ntawm qhov vuam seam. Cov txheej txheem no txhim kho kev qaug zog tiv thaiv thiab ua kom cov yeeb nkab tswj kev ncig thaum lub sijhawm teeb tsa thiab kev pabcuam.
Daim ntawv thov hauv Roj, Gas thiab Infrastructure Projects
LSAW carbon steel yeeb nkab yog dav siv nyob rau hauv cov roj thiab roj kav raj qhov twg diameters tshaj 24 ntiv tes thiab kev khiav hauj lwm siab. Hauv cov haujlwm zoo li no, cov kws ua haujlwm ua haujlwm tseem ceeb tshaj plaws ntawm kev sib tsoo toughness thiab tawg muaj peev xwm ntes tau. Phaj chemistry yog ua tib zoo tswj kom ua tiav cov txiaj ntsig qis carbon sib npaug thaum tuav lub zog, ua kom zoo weldability thiab cuam tshuam tsis kam ntawm qhov kub thiab txias.
Hauv cov dej xa mus, txoj kab loj loj LSAW cov kav dej tso cai muaj peev xwm txaus nrog cov pob qij txha tsawg, txo lub sijhawm teeb tsa thiab cov ntsiab lus to. Thaum ua ke nrog cov epoxy hauv ob sab phlu thiab sab nraud los tiv thaiv- xeb txheej xws li 3LPE, cov kav dej no muab cov kav ntev ntev - lub sij hawm durability nyob rau hauv ob qho tib si faus thiab saum toj no - hauv av installation.
Hauv kev tsim kho vaj tse, LSAW carbon steel yeeb nkab kuj tseem siv los ua kem, pawg, thiab loj - ncua kev txhawb nqa. Qhov siab seem modulus thiab niaj hnub geometry pab rau kev kwv yees load faib thiab simplified structural xam.
Xaus
LSAW carbon steel yeeb nkab nyob hauv txoj haujlwm tseem ceeb hauv cov kav dej niaj hnub thiab kev tsim vaj tsev. Nws cov txheej txheem tsim khoom raws li cov hlau phaj tsim thiab submerged arc vuam enables loj diameters, tuab phab ntsa, thiab siab mechanical kev ua tau zoo. Los ntawm kev tswj xyuas kom zoo, kev ua tiav tsis yog - kev kuaj kev puas tsuaj, thiab kev xaiv cov khoom tsim nyog, LSAW carbon steel yeeb nkab xa cov kev ua tau zoo hauv kev siab - roj thiab roj xa mus, cov kav dej hauv nroog, cov qauv hauv ntug dej hiav txwv, thiab kev tsim kho hnyav.
Raws li kev txhim kho kev tsim kho vaj tse txuas ntxiv mus thoob ntiaj teb, LSAW carbon steel yeeb nkab yuav tseem yog ib qho kev daws teeb meem tseem ceeb rau cov haujlwm uas xav tau lub zog ntawm cov qauv, qhov ruaj khov, thiab ntev - kev nyab xeeb kev ua haujlwm.
