1. Tšepe ea Womic: Bokhoni ba Tlhahiso le Matla a Khamphani
Womic Steel Group e sebetsa mela e mengata ea tlhahiso ea LSAW e akaretsang mekhoa e meraro ea mantlha ea ho etsa hammoho le bokhoni bo ikhethang ba mabota a boima. Tlhahiso ea X65 e hloka ts'ebetso e tsoetseng pele ea thermomechanical controlled controlled (TMCP) ea lipoleiti le taolo e nepahetseng ea ho kenya mocheso nakong ea ho tjheseletsa.
● Mohala oa JCOE:Bakeng sa bophara ba 406mm – 1,422mm (16″–56″), botenya ba lebota bo fihlang ho 50.8mm. JCO e bopjwang mohato ka mohato ka katoloso ya mechini. E loketse boholo ba ditshebediso tsa trunk tsa X65 tse lebopong.
●Mola oa UOE:Bakeng sa bophara ba 508mm – 1,220mm (20″–48″), botenya ba lebota bo fihlang ho 40mm. Ho etsa U ebe ho etsa O ka katoloso ea haeteroliki. Ho nepahala ha boholo bo botle ka ho fetisisa (± 0.2% OD), ho kgethwa bakeng sa liphaephe tse tebileng tsa lebopong la leoatle, li-risers le tšebeletso e bolila.
●Poleiti e Menoang (Seam e le 'Ngoe):Bakeng sa bophara ba 600mm – 1,600mm (24″–63″), botenya ba lebota ho tloha ho 25mm ho isa ho 70mm. Poleiti e le 'ngoe e phuthoa ka har'a silindara. E loketse liphaephe tse boima tsa lebota la X65 tse hlokang ho hanyetsa ho putlama ho hoholo.
●Poleiti e Menoang (Seam e Habeli):Bakeng sa botenya ba lebota > 50.8mm ho fihlela ho 80mm, ho sebediswa dipoleiti tse pedi tse tjheselleditsweng ka bolelele. E sebediswa bakeng sa diphaephe tsa CO₂ tse nang le kgatello e phahameng haholo le ho enta ka metsi.
Bokgoni bohle ba LSAW bo feta ditone tse 300,000 ka selemo, ka tlhahiso e inehetseng ya X65 e fetang ditone tse 70,000 ka selemo. Womic Steel e na le API 5L Monogram, ISO 9001, CE PED, mme e hlahlojwa kgafetsa ke ABS, DNV, TÜV, le BV. Rekoto ya lefatshe ka bophara dinaheng tse fetang 80 ka diphaephe tsa X65 tse fetang 1,200 km tse fanweng.
Ho tenyetseha ha Tlhahiso:
●JCOE: 406–1,422mm OD × 6.0–50.8mm Boima × ≤ 18m
●UOE: 508–1,220mm OD × 6.0–40.0mm Boima × ≤ 24m (katoloso ea mechini, ho chitja ±0.2%)
●Poleiti e phutholohileng (sehokelo se le seng): 600–1,600mm OD × 25–70mm Boima × ≤ 12m
●Poleiti e phutholohileng (sehokelo se habeli): 1,000–2,000mm OD × 25–80mm Boima × ≤ 12m
Liphaephe tsohle tsa X65 li ka fanoa ka PWHT (kalafo ea mocheso ea kamora ho weld) bakeng sa tšebeletso e teteaneng ea lebota kapa bolila. Teko ea tšusumetso ea mocheso o tlase e fumaneha ho fihlela ho -46°C le -60°C.
2. API 5L X65: Sebopeho sa thepa le litšobotsi tsa ts'ebetso
API 5L X65 (L450) ke mofuta oa phaephe ea mohala o matla o sebelisoang haholo bakeng sa phetiso ea khase e nang le khatello e phahameng ea sebaka se selelele le liphaephe tsa metsi a tebileng a leoatleng. Matla a fokolang a tlhahiso ke 450 MPa (65,300 psi) le matla a ho thaepa a 535 MPa (77,600 psi). X65 e hlahisoa ka ho sebelisa ho rola ho laoloang (TMCP) ka microalloying (Nb, V, Ti, hangata ka Mo bakeng sa tšebeletso e bolila) ho fihlela sebopeho se senyenyane sa ferrite kapa bainitic microstructure.
Sebopeho sa Lik'hemik'hale (Tlhahlobo ea Lesela, % e phahameng ka boima):
| Karolo | API 5L X65 PSL1 (max %) | API 5L X65 PSL2 (max %) | Tšebeletso e Bolila (sepheo se tloaelehileng) |
| C | 0.22 (e tloaelehileng 0.08-0.10) | 0.12 | ≤ 0.08 |
| Mn | 1.60 | 1.60 | ≤ 1.50 |
| P | 0.025 | 0.025 | ≤ 0.015 |
| S | 0.015 | 0.015 | ≤ 0.003 |
| Si | 0.45 | 0.45 | 0.15-0.40 |
| V | 0.10 | 0.10 | ≤ 0.08 |
| Nb | 0.05 | 0.05 | 0.03-0.05 |
| Ti | 0.04 | 0.04 | ≤ 0.025 |
| Mo | Ha ea hlalosoa | Ha ea hlalosoa | ≤ 0.30 (bakeng sa bolila) |
| CEV | Ha ea hlalosoa | ≤ 0.43 | ≤ 0.40 (e tloaelehileng ≤ 0.38) |
Bakeng sa tšebeletso e bolila, Womic e boloka CEV ≤ 0.40% mme e sebedisa dipoleiti tsa khabone e tlase, manganese e tlase, le sebabole se tlase ka kalafo ya calcium bakeng sa taolo ya sebopeho sa ho kenyeletswa.
Thepa ea Mekaniki (Mocheso oa Kamore):
| Thepa | API 5L X65 PSL1 | API 5L X65 PSL2 |
| Matla a Tekanyo (metsotso) | 450 MPa (65,300 psi) | 450–600 MPa |
| Matla a ho Tenyetseha (metsotso) | 535 MPa (77,600 psi) | 535–760 MPa |
| Ho lelefatsa (metsotso) | 19% (bakeng sa gauge ea 50mm) | 19% |
| Karolelano ea Tlhahiso (max) | Ha ea hlalosoa | 0.93 |
| Bothata (boholo) | Ha ea hlalosoa | 90 HRB (e bolila: 85 HRB e tloaelehileng) |
| Matla a Tšusumetso (metsotso) | Ha ho hlokahale | 27 J @ 0°C (boikhethelo -20°C, -40°C, -46°C) |
Papiso le X60 le X70:
| Sehlopha | Tekanyo ea MPa | MPa e tenyetsehang | Karolelano ea Tlhahiso | Tšebeliso e Tloaelehileng |
| X60 | 415 | 520 | ≤ 0.93 | Khase e nang le khatello e phahameng, lebōpong la leoatle |
| X65 | 450 | 535 | ≤ 0.93 | Khatello e phahameng haholo, metsi a tebileng |
| X70 | 485 | 570 | ≤ 0.93 | Khatello e phahameng haholo, sebaka se selelele |
3. Ho Latela Maemo le Litekanyetso tsa Tekanyo
| Ntho | Tlhaloso |
| E tloaelehileng | API 5L PSL1 / PSL2 (hape le ISO 3183 L450, DNV-OS-F101 L450) |
| Mekhoa ea Tlhahiso | JCOE, UOE, poleiti e phutholohileng (sehokelo se le seng/se habeli) |
| Sebaka sa Bophara ba Kantle | 219mm – 1,600mm (8″ – 63″) |
| Botenya ba Lebota | JCOE/UOE: 6.0mm – 50.8mm; Poleiti e phutholohileng: 25mm – 70mm (ho fihlela ho 80mm ka mokhoa o ikhethileng) |
| Bolelele ba Nako | E tloaelehileng: 6m, 12m, 18m; E atolositsoeng: ho fihlela ho 24m (JCOE/UOE) kapa 12m (poleiti e phutholohileng) |
| Qetello ea ho Qetela | Qetello e se nang letho (PE), Qetello e Beveled (BE) ka API 5L (30° bevel, 1.6mm root face) |
| Qetello ea Bokaholimo | E hlobotse, e tlotsitsoe ka oli, 3LPE, 3LPP, FBE, Epoxy ea mashala, Epoxy ea metsi |
| Mamello | OD: ±0.5% kapa ±3.2mm (ho sa tsotelehe hore na e ka tlase ho eng); Boima: -0% / +15%; Bolelele: +50mm / -0mm |
4. Litekanyo le Litlhaloso tse Fumanehang – Pipe ea Tšepe ea API 5L X65 LSAW (Boholo bo Tloaelehileng bo Khethiloeng)
| OD (mm) | Dikgetho tsa WT (mm) | Tshebetso | Boima bo ka bang teng (kg/m2) | Bolelele bo Tloaelehileng | Tšebeliso e Tloaelehileng |
| 273 | 6.4, 8.0, 10.0, 12.5 | JCOE | 42.1 – 80.1 | 12m | Methapo ea khase e ka lehlakoreng |
| 324 | 8.0, 10.0, 12.5, 14.0 | JCOE | 62.4 – 107.1 | 12m / 18m | Pokello ea khase |
| 406 | 8.0, 10.0, 12.5, 14.0, 16.0, 19.0 | JCOE/UOE | 78.5 – 181.4 | 12m / 18m | Methapo ea kutu |
| 508 | 10.0, 12.5, 14.0, 16.0, 19.0, 22.0 | UOE | 122.8 – 263.8 | 12m / 18m / 24m | Khase e nang le khatello e phahameng |
| 610 | 12.5, 14.0, 16.0, 19.0, 22.0, 25.4, 28.0 | UOE | 184.2 – 401.8 | 12m / 18m / 24m | Methapo e meholo ea lithōle tsa khase |
| 711 | 14.0, 16.0, 19.0, 22.0, 25.4, 28.0, 30.0 | JCOE/UOE | 240.7 – 503.8 | 12m / 18m | Khase e tšelang naha |
| 813 | 16.0, 19.0, 22.0, 25.4, 30.0, 32.0, 35.0 | JCOE | 314.4 – 671.4 | 12m / 18m | Ho romela kantle ho naha kantle ho naha |
| 914 | 19.0, 22.0, 25.4, 30.0, 35.0, 38.0, 40.0 | JCOE | 419.5 – 862.0 | 12m / 18m | Khase ea metsi a tebileng |
| 1,016 | 22.0, 25.4, 30.0, 35.0, 40.0, 45.0, 50.0 | JCOE/E phutholohileng | 539.2 – 1,191.7 | 12m | Metsi a tebileng haholo |
| 1,220 | 25.4, 30.0, 35.0, 40.0, 45.0, 50.0, 55.0 | E phutholohile (e le 'ngoe) | 748.4 – 1,577.8 | 12m | Liphaephe tsa Arctic |
| 1,422 | 30.0, 35.0, 40.0, 45.0, 50.0, 55.0, 60.0 | E phutholohile (e le 'ngoe) | 1,030 – 2,016 | 12m | CO₂ ea khatello e phahameng |
| 1,600 | 35.0, 40.0, 50.0, 60.0, 70.0 | E phutholohile (e habeli) | 1,350 – 2,640 | 10m / 12m | Morero o ikhethileng |
*Liphaephe tse boima tsa X65 tse leboteng (≥ 25mm bakeng sa tšebeletso e bolila, ≥ 32mm bakeng sa e seng bolila) li hloka PWHT. X65 bakeng sa metsi a tebileng e hloka ho tetebela ha Charpy ho -20°C kapa ka tlase le tlhahlobo ea CTOD.*
5. Maemo a Tloaelehileng le Mekhahlelo – Phaephe ea Mohala ea LSAW le Phaephe ea Sebopeho
| E tloaelehileng | Likereiti tsa Tšepe | Tšebeliso e Tloaelehileng | Mokhoa oa ho Theha |
| API 5L PSL1/PSL2 | X65, X70 | Phetiso ea oli/khase | JCOE/UOE/E phutholohileng |
| API 5L PSL2 (e bolila) | X65, X70 | Tšebeletso e bolila (H₂S) | UOE + PWHT |
| ISO 3183 | L450, L485 | Merero ea machaba | JCOE/UOE |
| DNV-OS-F101 | L450, L485 | Liphaephe tsa ka tlas'a leoatle | UOE |
| EN 10217-1 | S355JR | Liphaephe tsa khatello | JCOE |
| NORSOK M-120 | X65 | Sethala sa kantle ho naha | UOE |
| ASTM A671 | CC65, CC70 | Mocheso o tlase | E phutholohile |
Kakaretso ea tšebeliso:Liphaephe tsa kantle ho naha tsa khase metsing a tebileng, lithapo tsa khase tse nang le khatello e phahameng, liphaephe tsa tšebeletso e bolila, liphaephe tsa CO₂ bakeng sa CCS, li-risers tse ka tlas'a leoatle, phetiso ea khase ea arctic.
6. Mekhoa ea Tlhahiso – LSAW (JCOE / UOE / Poleiti e Menoang) bakeng sa Phaephe ea Tšepe ea X65
X65 e hloka lipoleiti tsa TMCP (thermomechanical controlled processing) le taolo e tiileng ea ho kenya mocheso nakong ea ho tjheseletsa SAW ho boloka HAZ e tiile.
Ts'ebetso ea JCOE (406–1,422mm OD, Boima ba 6.0–50.8mm):
● Ho sila ka bohale ba poleiti (X kapa J bevel) ka ho nepahala ± 0.5mm
● Ho kobeha ha mathoko pele ho nako
● Ho thehoa ha JCO ka tatellano
● Ho tjheseletsa lithapo (lithapo tse nang le sebaka)
● SAW ea ka Hare (kenyo ea mocheso ≤ 2.5 kJ/mm bakeng sa X65)
● Ho ntsha dintho tse sa lokang
● SAW ea Kantle (li-pass tse ngata, mocheso oa li-interpass ≤ 200°C)
● Katoloso ea mechine (1-1.5% OD)
● E loketse boholo ba mela ea lithupa tsa X65 tse lebōpong la leoatle
Ts'ebetso ea UOE (508–1,220mm OD, Boima ba 6.0–40mm):
● Ho tobetsa ka U (2000-4000t)
● O-press (3000-6000t)
● Katoloso ea mechine (likarolo tse 48-72)
● Ho tjheseletsa ka taolo ya ho kenya mocheso
● E kgethwa bakeng sa liphaephe tsa metsi a tebileng a lebōpong la leoatle (± 0.2% circular, khatello e tlase e setseng)
Poleiti e Menoang (Seam se le Seng) bakeng sa Lebota le Boima (600–1,600mm OD, Boima ba 25–70mm):
● Meqolo e 4 e kobehang ka har'a silindara
● SAW e fetang ka makhetlo a mangata (motso, tlatsa, sekwahelo)
● PWHT e tlamang bakeng sa botenya ba lebota ≥ 25mm bakeng sa tšebeletso e bolila
● E sebelisoa bakeng sa CO₂ e nang le khatello e phahameng le ente ea metsi
Kalafo ea Mocheso Kamora ho Welded (PWHT):Bakeng sa tšebeletso ea bolila ba X65, PWHT e sebelisoa bakeng sa botenya bohle ba mabota ≥ 25mm (kapa joalo ka ha ho boletsoe). Mocheso oa ho kolobisa 580-620°C, tšoara hora e le 'ngoe ka 25mm. Sekhahla sa ho pholisa ≤ 200°C ka hora. Bothata ka mor'a PWHT: tšepe ea motheo 78-85 HRB, weld 82-88 HRB.
Bokhoni ba Mocheso o Tlase le CTOD:Bakeng sa lits'ebetso tsa kantle ho naha le tsa arctic, Womic e fana ka X65 ka ts'usumetso ea Charpy ho -46°C (bonyane 27J, tlwaelo 100-150J) le teko ea CTOD (Crack Tip Opening Displacement) ho latela BS 7448 kapa ASTM E1820. Boleng bo tloaelehileng ba CTOD: ≥ 0.25mm ho -20°C bakeng sa tšepe e welded le HAZ.
7. Mekhoa ea Taolo ea Boleng le Liteko bakeng sa Pipe ea Tšepe ea API 5L X65 LSAW
| Sethaleng | Mokhoa oa Tlhahlobo | Morero | Mokhoa o Sebetsang |
| Poleiti | Tlhahlobo ea Lik'hemik'hale (OES) | Netefatsa sebopeho sa X65 | Kaofela |
| Poleiti | Ultrasonic (lamination) | Lemoha mefokolo ea ka hare | Kaofela |
| Poleiti | Tensile (L+T) | Thepa ea mechini | Kaofela |
| Poleiti | Boholo ba lijo-thollo (ASTM E112) | Lithollo tse ntle (ASTM 10+) | X65 PSL2 |
| Nakong ea ho theha | Tekanyo (OD, ovality) | Netefatsa hore ho tšoana | Kaofela |
| Sehokelo sa ho weld | UT e Iketsetsang ea 100% (TOFD) | Lemoha liphoso tsa ho tjheseletsa | Kaofela |
| Sehokelo sa ho weld | RT (sebaka/se tletseng) | Boleng ba ho weld | Kaofela |
| Sehokelo sa ho weld | MPI (menoana ea maoto/HAZ) | Mapetso a holim'a metsi | Kaofela |
| Sehokelo sa ho weld | Tsela ea ho thatafala (ho tjheseletsa, HAZ, BM) | Tšebeletso e bolila | PSL2 e bolila |
| Phaephe e felileng | Teko ea Hydrostatic | Botšepehi ba khatello | Kaofela |
| Phaephe e felileng | Charpy V-Notch (PSL2) | Ho tiea ha mocheso o tlase | PSL2 feela |
| Phaephe e felileng | Bothata (HRB/HV10) | Ho latela melao e thata | PSL2 e bolila |
| Phaephe e felileng | Kobeho e Tataisitsoeng / Ho Batalatsa | Bokgoni ba ho sebetsa | Kaofela |
| Phaephe e felileng | DWTT (ha ho hlokahale) | Ho ata ha ho robeha | Arctic |
| Phaephe e felileng | CTOD (ha ho hlokahale) | Ho tiea ha ho robeha | Lebōpong/metsi a tebileng |
Khetho bakeng sa tšebeletso ea bohlokoa:
● HIC ka NACE TM0284 (Tharollo A kapa B, 96h)
● SSC ho latela NACE TM0177 (Mokhoa A, 720h)
● Tšusumetso e tlase mochesong ho -46°C, -60°C
● DWTT ho -20°C kapa ka tlase (sebaka sa ho kuta sa ≥ 85%)
● CTOD ho -20°C kapa -46°C (≥ 0.25mm)
● UT ea 'mele oohle (eseng moroko feela)
Teko ea ts'enyeho (CO₂, letsoai)
8. Likopo tsa mantlha - Pipe ea tšepe ea API 5L X65 LSAW
Liphaephe tsa ho romela khase kantle ho naha metsing a tebileng– Botebo ba metsi ho fihlela ho 3,000m, khanyetso e phahameng ea khatello ea kantle (ts'ebetso ea UOE e chitja ka thata)
Methapo ea likutu tsa khase ea tlhaho e nang le khatello e phahameng– Likhatello tse sebetsang ho fihlela ho 15 MPa (2,200 psi), phokotso ea botenya ba lebota ha ho bapisoa le maemo a tlase
Liphaephe tsa oli le khase tse fanang ka litšebeletso tse bolila– Tikoloho tse nang le H₂S (PSL2 e nang le HIC/SSC, PWHT, boima ≤ 85 HRB)
Liphaephe tsa CO₂ bakeng sa ho hapa le ho boloka khabone (CCS)– Ho tsamaisa CO₂ ka khatello e phahameng, ho hloka ho tiea mochesong o tlase
Li-risers le mela ea phallo ea metsi a ka tlas'a leoatle– Ditshebediso tse matla tse hlokang CTOD le teko ya mokhathala
Liphaephe tsa khase tsa Arctic le permafrost– Ho theoha mochesong o tlase ho fihlela ho -46°C, DWTT bakeng sa taolo ya ho robeha ha lehare
Methapo ea ho kenya metsi ka khatello e phahameng– Ho hlaphoheloa ha oli ho matlafalitsoe, khatello e fihlang ho 35 MPa
Li-loop tsa katoloso ea liphaephe– Ditshebediso tse nang le kgatello e phahameng tse hlokang moralo o itshetlehileng hodima kgatello (X65 ka karolelano e boletsweng ya chai)
9. Pakete le Thomello – Pipe ea Tšepe ea API 5L X65 LSAW
Ho tšoana le lihlahisoa tsa pele tse nang le tlhokomelo e eketsehileng bakeng sa tšireletso ea ho koahela liphaepheng tsa X65 tsa boleng bo holimo. Liphaephe li pakoa ka bonngoe ka lehong le koahetsoeng ka lepolanka, li-end caps, le mekotla ea mouoane e thibelang mafome bakeng sa maeto a malelele a leoatle. Bakeng sa merero ea metsi a tebileng, tlhokomelo e khethehileng e fanoa ho tšireletso ea bevel.
10. Melemo le Lipotso Tse Botsoang Khafetsa ka Tšepe ea Womic - Pipe ea Tšepe ea API 5L X65 LSAW
Hobaneng Womic Steel e le ea X65 LSAW?
● Ts'ebetso ea UOE e fana ka ±0.2% OD roundness - ea bohlokoa bakeng sa khanyetso ea ho putlama ha metsi a tebileng
● Tšebeletso e bolila e netefalitsoeng ka bokhoni ba HIC/SSC le PWHT
● Tšusumetso e tlase mochesong ho fihlela ho -60°C le liteko tsa CTOD bakeng sa mechine ea ho robeha ha fracture
● Tumello ea API 5L Monogram + DNV bakeng sa mose ho maoatle
● Liphaephe tsa X65 tse fetang 1,200 km li fanoa lefatšeng ka bophara
● Tlhahlobo ea motho oa boraro ke DNV, ABS, BV, SGS, TÜV
Lipotso Tse Botsoang Khafetsa:
P: Phapang ke efe pakeng tsa X65 le X60 bakeng sa lipeipi tsa leoatleng?
A: X65 e fana ka matla a ho hlahisa a phahameng ka 8% (450 vs 415 MPa), e leng se lumellang mabota a masesaane hanyane. Bakeng sa metsi a tebileng (≥ 1,000m), X65 hangata e kgethwa ka lebaka la ho hanyetsa ha yona ho betere ho putlama le tshebetso ya mokhathala. Leha ho le jwalo, X65 e hloka mekgwa e thata ya ho tjheseletsa mme e na le kutloelo-bohloko haholo ho petsoheng ha haeterojene. Bakeng sa botebo ba metsi < 500m, X60 e ka ba theko e tlase.
P: Na o ka fana ka X65 ka diteko tsa CTOD bakeng sa di-risers tse tswang mose ho maoatle?
K: E. Re etsa liteko tsa CTOD ho latela BS 7448 kapa ASTM E1820 mochesong o boletsoeng (hangata -20°C kapa -46°C). Boleng bo tlase ba CTOD: 0.25mm bakeng sa tšepe e welded, 0.30mm bakeng sa HAZ. Re fane ka X65 e lekiloeng ke CTOD ho北海le merero ea ho ea lebōpong la leoatle la Asia Boroa-bochabela.
P: Botenya ba lebota bo boholo ka ho fetisisa bakeng sa phaephe ea X65 LSAW ke bofe?
A: JCOE/UOE e kaholimo ho 50.8mm, poleiti e phutholohileng e le 'ngoe e fihlang ho 70mm, poleiti e phutholohileng e habeli e fihlang ho 80mm. Bakeng sa botenya ba lebota > 50.8mm, PWHT ke ea tlamo. Haufinyane re fane ka X65 1,016mm OD × 60mm WT bakeng sa phaephe ea CO₂ e nang le khatello e phahameng.
P: U netefatsa joang hore HAZ e tiile bakeng sa ho tjheseletsa masimong a X65?
K: Re laola k'hemistri ea poleiti (CEV e tlase, ≤ 0.40%), ho kenya mocheso nakong ea SAW (≤ 2.5 kJ/mm), le mocheso oa interpass (≤ 200°C). Re fana ka likhothaletso tsa ho tšoaneleha ha mokhoa oa ho welding (WPQ) ho bareki 'me re ka fana ka lisampole tse ka sebelisoang tsa ho welding. Tšusumetso e tloaelehileng ea HAZ Charpy ho -20°C: 120-200J.
P: Na X65 e loketse tšebeletso ea sour (H₂S)?
K: E, empa e hloka PSL2 e nang le CEV e tlase (≤ 0.40%), PWHT bakeng sa botenya bohle ba mabota ≥ 20mm, boima ≤ 85 HRB, le teko ea HIC/SSC. Womic e fane ka tšebeletso ea sour X65 ho Middle East (30 ppm H₂S) le Canada (sour gas).
P: Nako e tloaelehileng ea ho etella pele phaephe ea X65 LSAW ke efe?
A: Tloaelo ya X65 PSL1: Matsatsi a 40-55. X65 PSL2 ka tshebeletso e bolila le PWHT: Matsatsi a 60-80. Diodara tse potlakileng (matsatsi a 30-45) bakeng sa bongata bo ka tlase ho ditone tse 2,000 haeba dipoleiti di le teng ka hara setoko.
Tšupiso ea Morero - Phaephe ea ho Romela Khase ea Metsing a Tebileng a Leoatle la Leboea
Naha:Norway (Leoatle le ka Leboea, sebaka sa tšimo ea Balder)
Maemo le Kereiti:API 5L X65 PSL2 e nang le litšebeletso tse bolila le litlhoko tsa CTOD
Litekanyo le Bongata:
● OD 610mm (24″) × Boima 22.2mm – limithara tse 28,000 (hoo e ka bang lithane tse 9,200) e entsoeng ka mokhoa oa UOE
● OD 610mm (24″) × Boima 25.4mm – limithara tse 6,000 (hoo e ka bang lithane tse 2,300) e entsoeng ka mokhoa oa UOE (lebota le teteaneng bakeng sa karolo e phahamisang)
● OD 813mm (32″) × Boima 30.0mm – limithara tse 4,000 (hoo e ka bang lithane tse 2,500) e entsoeng ka seam e le 'ngoe ea poleiti e phuthiloeng (bakeng sa mokhoa oa lebopong)
Kakaretso:Limithara tse 38,000 (38 km), hoo e ka bang lithane tse 14,000
Litlhaloso:Seaparo sa kantle sa 3LPP (botebo bohle ba 3.5mm) bakeng sa tšebeletso ea mocheso o phahameng (110°C), lipheletso tse betliloeng 30° / 1.6mm sefahleho sa metso ka li-bevel protectors tsa tšepe e sa hloekang, hydrotest ho 22.5 MPa (khatello ea moralo 17.0 MPa). Tšusumetso ea Charpy e tlamang ho -20°C (bonyane 50J, e fihletsoe 120-200J) le ho -46°C (bonyane 27J, e fihletsoe 80-150J). Teko ea CTOD ho latela BS 7448 ho -20°C - kamohelo: tšepe e weld ≥ 0.25mm, HAZ ≥ 0.30mm. HIC ho latela NACE TM0284 (Tharollo A, 96h) - kamohelo: CLR 0%, CTR 0%, CSR 0%. SSC ho latela NACE TM0177 - ha ho na ho petsoha. PWHT e sebelisitsoe bakeng sa liphaephe tsohle ka lebaka la tšebeletso e bolila. 100% UT e nang le TOFD le UT ea 'mele oohle (eseng feela moroko). Tlhahlobo ea motho oa boraro ea DNV nakong eohle ea tlhahiso.
Kopo:Phaephe ea ho romela khase metsing a tebileng ho tloha tšimong ea Balder (botebo ba metsi 800-1,200m) ho ea sebakeng sa ho amohela metsi lebōpong la leoatle Norway. Phaephe ena ea 38 km e kenyelletsa karolo e matla ea ho phahamisa (2 km, 25.4mm WT) le tsela ea lebopong e fetang sebakeng se majoe (4 km, 30mm WT plate e phutholohileng).
Liphephetso tsa Tekheniki le Litharollo:
● Khanyetso ea ho putlama ha metsi a tebileng– Botebo ba metsi ho fihlela ho 1,200m bo beha kgatello ya kantle ya 12.5 MPa. Phaephe ya UOE ya 24″ × 22.2mm e hlokahalang ho fihlela kgatello ya ho putlama ≥ 25 MPa (ntlha ya polokeho 2). Diphaephe tsa UOE tse hlahisitsweng ke Womic tse nang le ovality ≤ 0.2% (tse lekantsweng ho 0.15-0.18%) le kgatello e setseng ≤ 35% SMYS. Re entse tlhahlobo ya dielemente tse felletseng (FEA) hodima diparamente tsa tlhahiso mme ra netefatswa ka teko ya kgatello ya ho putlama disampoleng tse pedi tse feletseng (tse fihlelletsweng 28.5 MPa le 29.2 MPa).
● Tšebeletso e bolila e nang le H₂S e phahameng– Khase e na le 50 ppm H₂S mochesong oa ts'ebetso oa 90°C. Lipoleiti tse khethiloeng tsa Womic tse nang le khabone e tlase (C ≤ 0.07%), tse nang le manganese e tlase (Mn ≤ 1.40%), tse nang le sebabole se tlase (S ≤ 0.002%) tse nang le kalafo ea calcium. CEV e ile ea bolokoa ho 0.35-0.38%. PWHT e ile ea sebelisoa bakeng sa liphaephe tsohle (ho kolobisa 600°C ± 10°C, ho tšoara lihora tse 1.5). Ho thatafala kamora PWHT: tšepe ea motheo 78-84 HRB, weld 82-86 HRB, HAZ 80-84 HRB. Liteko tsa HIC le SSC li fetile ntle le mapetso.
● Ho tiea ha CTOD bakeng sa riser– Karolo e phahamisang e matla e hloka ho tiea ho hoholo ha ho robeha ho mamella ho jara ha maqhubu. Womic e entse liteko tsa CTOD holim'a tšepe ea weld le HAZ ho -20°C. Liphetho: tšepe ea weld 0.35-0.55mm (≥ 0.25mm e hlokahala), HAZ 0.40-0.70mm (≥ 0.30mm e hlokahala). Re boetse re entse Charpy ea mocheso o tlase ho -46°C (karolelano ea 110J). DNV e bone liteko tsohle tsa CTOD.
● Seaparo se nang le mocheso o phahameng (3LPP)– Mocheso o sebetsang ke 90°C, ka tlhoro ea 110°C nakong ea ho koaloa. 3LPE e tloaelehileng (polyethylene) e lekanyelitsoe ho 80°C. Seaparo sa 3LPP (polypropylene) se sebelisitsoeng ke Womic se nang le botenya ba 3.5mm (lera le ka holimo la 2.5mm + sekhomaretsi sa 0.5mm + FBE 0.5mm). Seaparo se fetile teko ea ho arohana ha cathodic ho 110°C (radius ea ho arohana ≤ 8mm kamora matsatsi a 28). Matla a ho tlosa peo ho 110°C a lekantsoe ho 60 N/cm (bonyane 50 N/cm).
● Mamello e feteletseng bakeng sa ho kenya lireile– Phaephe e kentswe ka ho sebedisa mokgwa wa ho bea di-reel (phaephe e kentswe hodima sejana sa reel). Sena se hloka taolo e feteletseng ya ovality (≤ 0.2%) le bophahamo ba ho matlafatsa ho weld ≤ 0.5mm. Ts'ebetso ya Womic ya UOE e fihletse ovality ya 0.15-0.18%. Re sidile dikoahelo tsa weld ho fihlela ho ≤ bophahamo ba 0.3mm. Diphaephe tsohle di fetile teko e ikgethang ya "reelability": dipotoloho tse 10 tse felletseng tsa ho weld ntle le ho petsoha.
● Thepa ea thepa ho ea Norway– Liphaephe li ile tsa romelloa ho tloha Shanghai ho ea Stavanger, Norway ka sekepe se nang le break-bulk (sejana se khethehileng sa liphaephe). Mariha a tšelang Leoatle le ka Leboea a ne a hloka sephutheloana se thibelang ho kolobisoa. Mekotla ea Womic e sebelisitse VCI (mouoane o thibelang ho kolobisoa) le li-desiccant tsa silica gel ka har'a li-end caps. Lithane tsohle tse 14,000 li fihlile ntle le ts'enyeho kapa tšenyo ea ho roala.
Sephetho:Phaephe ea kantle ho naha ea khase ea tšimo ea Balder e kentsoe kotara ea boraro ea 2024. Ho kenngoa ha reel-lay (ho entsoeng ke rakonteraka ea ka sehloohong oa leoatleng) ho tlalehile hore ha ho na ho hloleha ha 'mele oa phaephe kapa ho tjheseletsa seam nakong ea ho bokella le ho kenya. Lik'hilomithara tsohle tse 38 li fetile teko ea khatello botebong ba leoatle. Moreki (mosebetsi e moholo oa Norway) o fane ka "Khau ea Ts'ebetso ea Bafani" ho Womic Steel, a hlokomela "ho tsitsa ho ikhethang ha litekanyo le liphetho tsa CTOD." Hona joale Womic ke mofani ea amohetsoeng bakeng sa merero e 'meli e meng ea ho kopanya Leoatle le Leboea.
Ikopanye le rona:
Webosaete: www.womicsteel.com
Imeile: sales@womicsteel.com
Mohala / WhatsApp / WeChat:
Victor: +86 15575100681
Jack: +86 18390957568
Womic Steel – Molekane oa hau ea tšepahalang bakeng sa liphaephe tsa API 5L X65 LSAW bakeng sa liphaephe tsa metsi a tebileng a lebōpong la leoatle, lithapo tsa khase tse nang le khatello e phahameng, tšebeletso e bolila, le lits'ebetso tsa arctic lefatšeng ka bophara.
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