Kev Tshawb Fawb Txog Kev Tshawb Fawb Txog Kev Tshawb Fawb Txog Kev Tshawb Fawb Txog Qhov Zoo ntawm LSAW Steel Yeeb Nkab

Taw qhia

Longitudinal Submerged Arc Welded kav thiab Ob chav Submerged Arc Welded kav yog ob pawg tseem ceeb ntawm cov kav hlau welded dav siv hauv cov roj thiab cov pa xa mus, cov qauv hauv ntug dej hiav txwv, cov kav dej hauv nroog, cov phiaj xwm piling, thiab cov ntawv thov kev lag luam. Txawm hais tias ob qho tib si yog tsim los ntawm kev siv cov txheej txheem arc vuam, lawv cov khoom siv raw, vuam geometry, kev tsim tshuab, thiab kev ua haujlwm kawg sib txawv heev. Kab lus no muab qhov sib piv ntawm - qhov tob ntawm ob hom, nrog rau kev piav qhia yog vim li cas LSAW steel kav muaj qhov tshwj xeeb thiab cov qauv zoo uas ua rau lawv xaiv qhov kev xaiv siab rau siab - kawg, siab - siab, thiab xav tau cov haujlwm engineering. Cov ntsiab lus tau teeb tsa rau ntau ntu thiab txhawb nqa los ntawm cov lus qhia ntxaws kom pom tseeb.

1. Txheej txheem cej luam ntawm LSAW thiab DSAW Steel Pipe

1.1 Technical txhais ntawmLSAW Tube

LSAW steel yeeb nkab yog hais txog ib hom welded steel yeeb nkab uas nws vuam seam khiav longitudinally raws qhov ntev ntawm cov yeeb nkab. Nws yog tsim los ntawm cov hlau phaj uas tsim thiab welded siv submerged arc vuam. Vim tias nws siv phaj ntau dua li cov kauj, LSAW tuaj yeem ua tiav cov phab ntsa tuab dua thiab zoo heev qhov ntev. Cov kab uas hla sab nraud tuaj yeem ncav cuag li 1420 millimeters, thaum lub phab ntsa tuab tuaj yeem tsim tau rau cov khoom hnyav hnyav uas haum rau siab -siab thiab ntev- cov kav dej.

1.2 Technical Definition of DSAW Pipe

DSAW steel yeeb nkab feem ntau yog tsim los ntawm kev siv cov tshuab vuam tshuab. Lub weld seam ua raws cov kev taw qhia helical, tsim los ntawm kub -rolled steel coils. DSAW cov kav dej tuaj yeem tsim tau ntev txog 40 meters vim tias cov hlau txuas txuas txuas ntxiv tso cai rau kev tsim khoom txuas ntxiv yam tsis muaj kev cuam tshuam. Txawm li cas los xij, qhov siab tshaj plaws ntawm phab ntsa yog txwv rau kwv yees li 25.4 millimeters vim muaj kev txwv cuam tshuam nrog cov txheej txheem coil dov.

2. Cov qauv tsim thiab kev tsim khoom sib txawv

2.1 Raw Materials thiab Forming Technology

2.1.1 LSAW Plate Forming

LSAW siv cov hlau phaj uas dhau los ntawm ntug milling, ua ntej-forming, J-C-O forming, thiab internal-submerged arc vuam. Plate forming tso cai rau cov phab ntsa hnyav dua thiab tswj tau ntau dua ntawm cov khoom siv kho tshuab.

2.1.2 DSAW Coil Forming

DSAW siv cov coils nrog txuas txuas txuas ntxiv. Vim hais tias lub coil thickness yog txwv los ntawm kub - dov muaj peev xwm, phab ntsa thickness yuav tsis tau tshaj ib tug tej yam. Cov txheej txheem tsim kuj ua rau ntev dua kauv weld seam.

Table 1: Kev sib piv ntawm cov khoom siv raw thiab cov txheej txheem tsim

2.2 Weld Geometry thiab Seam Strength

2.2.1 LSAW Seam Design

LSAW cov kav dej muaj ib qho kev sib txuas ntev, sab nraud lossis sab hauv thiab sab nraud nyob ntawm qhov tshwj xeeb. Lub vuam yog ncaj, luv ntawm tag nrho ntev, thiab yooj yim rau kev soj ntsuam.

2.2.2 DSAW Seam Design

DSAW cov kav dej muaj ob txoj hlua khi: ib sab hauv thiab sab nraud. Tag nrho cov weld ntev yog qhov ntev dua, uas ua rau muaj qhov tshwm sim ntawm weld - cuam tshuam qhov tsis zoo ntawm qhov ntev.

Table 2: Weld yam ntxwv

3. Qhov zoo ntawmLSAW steel yeeb nkab

Tshooj lus no tsom ntsoov rau kev ua tau zoo ntawm LSAW kav dej, piav qhia vim li cas lawv thiaj tswj hwm qhov loj - txoj kab uas hla, tuab- phab ntsa, siab - cov phiaj xwm siab thoob ntiaj teb.

3.1 Superior Weld Toughness thiab Mechanical Strength

3.1.1 Siab Toughness thiab Consistency

Lub weld tsim los ntawm submerged arc longitudinal welding exhibits zoo heev toughness thiab uniformity. Vim hais tias cov vuam yog ncaj thiab luv, nws muaj kev thermal distortion tsawg dua thiab tswj tau ntau dua metallurgy. Cov yam ntxwv no txhawb cov ntawv thov nyob rau hauv ib puag ncig hnyav, suav nrog qhov kub thiab txias thiab siab - cov kav xa dej siab.

3.1.2 Txhim kho Ductility

Lub longitudinal weld configuration muab ductile kev ua tau zoo, tseem ceeb heev rau pipelines raug rau hauv av txav, kub variation, thiab sab nraud quab yuam.

3.2 Txoj kab uas hla loj thiab hnyav phab ntsa Thickness muaj peev xwm

3.2.1 Heavier Phab ntsa Thickness

LSAW tuaj yeem ua tiav cov phab ntsa tuab heev vim yog phaj-raws li kev tsim khoom. Qhov no tso cai rau cov engineers tsim cov kav dej kom haum rau qhov sib sib zog nqus- dej ib puag ncig, ultra- siab- cov kua dej siab, lossis cov khoom siv thauj khoom- cov kabmob sib txuas xws li cov pawg sab nrauv.

3.2.2 Siab OD Stability

Cov txheej txheem tsim muab siab roundness thiab qis ovality. Lub precision sib sau thiab vuam tshuab txhawb nqa cov raj xa dej tshwj xeeb uas xav tau hauv cov roj thiab roj sib txuas.

3.3 Zoo Siab Siab Ua Haujlwm

3.3.1 Lub zog hauv Ntev -Cov kav dej deb

Vim tias cov kav dej LSAW yog tsim los nrog cov phab ntsa tuab thiab zoo dua weld lub zog, lawv tuaj yeem tswj cov kev ntxhov siab sab hauv ntev ntev. Cov kav dej no tau siv dav hauv kev hla - cov kav dej hauv lub tebchaws, suav nrog cov roj av, roj av, thiab cov khoom ua kom zoo.

3.3.2 Kev ruaj ntseg siab rau cov kav dej faus

LSAW kav dej tiv taus deformation txawm nyob rau hauv hnyav av loads, seismic rog, los yog thermal expansion, ua rau lawv zoo tagnrho rau underground infrastructure.

3.4 Tsawg Kub Corrosion Resistance

3.4.1 Anti-Kev Ua Haujlwm Zoo

Nrog rau kev tswj cov phaj chemistry thiab cov vuam tsis sib xws, LSAW cov kav dej muaj qhov ua tau zoo heev rau sulfide kev nyuaj siab corrosion, hydrogen -induced cracking, thiab qis - kub brittleness.

3.4.2 Kev siv Offshore thiab Arctic

Kev sib xyaw ua ke ntawm lub zog, ductility, thiab corrosion kuj ua rau cov kav dej LSAW ua tau zoo nyob rau hauv cheeb tsam polar, marine ib puag ncig, thiab siab -cov dej qab ntsev.

4. Kev siv ntawm LSAW Steel Pipes

4.1 Kev Lag Luam Kev Lag Luam Hluav Taws Xob

4.1.1 Roj thiab roj kav

LSAW kav yog siv nyob rau hauv loj thoob ntiaj teb kis tau tus mob pipelines vim lawv cov phab ntsa -thickness peev xwm, siab siab ntsuas, thiab nruj vuam zoo.

4.1.2 Petrochemical Projects

Refineries, tshuaj nroj tsuag, thiab chaw ua lag luam nyiam LSAW kav dej rau siab -kub, hnyav-load, los yog corrosive nruab nrab thauj.

4.2 Offshore thiab Marine Engineering

4.2.1 Piling thiab Structural Foundations

Lawv qhov kev ruaj ntseg siab ua rau LSAW cov kav dej zoo tagnrho rau lub hauv paus ntawm lub hauv paus cua fais fab, chaw nres nkoj engineering, choj kab, thiab kev txhawb nqa subsea.

4.2.2 Submarine Pipelines

Tsawg- qhov kub thiab txias ua haujlwm ua rau muaj kev nyab xeeb tob - hiav txwv pipeline.

4.3 Kev tsim kho thiab kev tsim vaj tsev

4.3.1 Cov Qauv Txheej Txheem

LSAW kav yog siv nyob rau hauv loj -span lug, kab, thiab load-cov ntaub ntawv bearing vim lawv lub zog txhua yam.

4.3.2 Kev xa dej

Cov kav dej haus hauv nroog, cov kav dej sib txuas, thiab cov kav dej ua haujlwm feem ntau xaiv LSAW rau kev ruaj ntseg siab.

5. Cov ntsiab lus sib piv: Vim li cas LSAW ua tau zoo dua DSAW

Qhov zoo ntawm LSAW steel kav tuaj yeem sau tau raws li hauv qab no:

• Cov phab ntsa hnyav dua thiab loj dua OD
• Shorter, straighter weld seam
• Ntau dua weld kev ncaj ncees thiab kev soj ntsuam yooj yim dua
• Kev ua haujlwm siab zoo dua
• Ntau dua toughness thiab ductility
• Muaj zog corrosion kuj, tshwj xeeb tshaj yog nyob rau hauv qis kub
• Zoo tagnrho rau siab -siab, siab- kev pheej hmoo, thiab ntev - kis tau tus mob

DSAW cov kav dej muaj txiaj ntsig nyob rau hauv qhov ntev - ntev kev tsim khoom, tab sis lawv cov khoom siv welded geometry ua rau lawv tsis haum rau qhov xav tau tshaj plaws engineering.

Xaus

LSAW steel kav, nrog rau lawv cov qauv zoo sib xws, weld toughness, loj txoj kab uas hla, thiab hnyav phab ntsa thickness muaj peev xwm, tuav lub luag hauj lwm tseem ceeb nyob rau hauv lub ntiaj teb no pipeline thiab structural steel lag luam. Lawv muaj peev xwm ua tau siab - ib puag ncig kev kub ntxhov, tiv taus huab cua hnyav, thiab tswj kom ntev - lub sij hawm ruaj khov ua rau lawv nyiam cov khoom siv hauv cov roj thiab roj, kev tsim hluav taws xob sab nrauv, thiab kev tsim kho loj -. Thaum DSAW cov kav dej tseem muaj txiaj ntsig zoo hauv qee qhov kev siv, qhov tsis sib xws ntawm cov khoom siv kho tshuab thiab kev ntseeg siab ntawm engineering ntawm LSAW cov kav dej txuas ntxiv ua rau lawv sib cais ua qhov kev xaiv rau siab -kawg kev lag luam.