Cov Phaj Hlau DH36 thiab EH36 rau Cov Platforms Offshore thiab Cov Khoom Siv Hauv Qab Dej

Hauv cov kev lag luam tsim kho hauv hiav txwv thiab hauv qab dej hiav txwv, cov ntaub ntawv tsim kho yuav tsum ua haujlwm zoo kawg nkaus nyob rau hauv cov xwm txheej hnyav - los ntawm kev ntxhov siab ntau yam mus rau qhov kub qis thiab qhov chaw dej ntsev hnyav. Ntawm cov ntaub ntawv txhim khu kev qha tshaj plaws rau cov ntawv thov no yogCov phaj hlau DH36 thiab EH36, cov hlau marine muaj zog siab tsim los kom tiv taus cov khoom thauj dynamic, kev cuam tshuam, thiab kev xeb hauv dej hiav txwv hnyav. Cov hlau no yog qhov tseem ceeb hauv kev tsim khocov platforms tawm ntawm ntug dej hiav txwv, cov roj rigs, cov cua turbine foundations, thiab cov khoom siv subseaqhov twg kev nyab xeeb, kev ruaj khov, thiab kev ua tau zoo tsis tuaj yeem sib tham tau.

At sakysteel, peb muab cov ntawv pov thawjCov phaj hlau DH36 thiab EH36uas ua tau raws li cov qauv kev faib tawm thoob ntiaj teb (ABS, LR, DNV, BV, thiab lwm yam) los txhawb kev ua kom ruaj khov ntawm cov haujlwm tsim kho hauv dej hiav txwv thiab ntug dej hiav txwv thoob ntiaj teb.

1. Kev Taw Qhia Txog DH36 thiab EH36 Cov Qib Hlau

DH36 thiab EH36yog ib feem ntawm ASTM A131 tsev neeg ntawm cov hlau ua los ntawm dej hiav txwv uas muaj zog heev. Txawm hais tias ob qib muaj lub zog thiab cov yam ntxwv zoo sib xws, lawv qhov sib txawv nyob rau hauvkev cuam tshuam tawv— qhov kub uas cov hlau tuaj yeem nqus tau lub zog yam tsis muaj kev tawg.

• DH36Kev sim cuam tshuam ntawm -20 ° C, tsim nyog rau cov chaw nyob hauv hiav txwv txias nruab nrab.

• EH36Kev sim cuam tshuam ntawm -40 ° C, tsim los rau cov xwm txheej kub qis heev xws li Arctic thiab kev ua haujlwm hauv dej hiav txwv tob.

Cov qib no qhia tau tias muaj zog tensile thiab yield, toughness tshwj xeeb, thiab weldability zoo heev, ua rau lawv zoo meej rau ob qho tib si nto thiab subsea qauv.

2. Cov Tshuaj Lom Zem thiab Cov Khoom Siv Kho Tshuab

Cov khoom sib xyaw ua ke ntawm DH36 thiab EH36 steel phaj yog ua tib zoo sib npaug kom ua tiav lub zog thiab kev tawv tsis muaj kev cuam tshuam rau kev vuam.

Cov Tshuaj Muaj Peev Xwm Ib Txwm Muaj:

• Cov pa roj carbon (C): ≤ 0.18%

• Manganese (Mn): 0.90–1.60%

• Silicon (Si): 0.10–0.50%

• Phosphorus (P): ≤ 0.035%

• Sulfur (S): ≤ 0.035%

• Cov ntsiab lus microalloying: Nb, Ti, V (rau kev ua kom cov noob zoo thiab tawv)

Cov Khoom Siv Kho Tshuab:

• Lub zog tawm los: ≥ 355 MPa

• Lub zog tensile: 490–620 MPa

• Kev Ntev: ≥ 21%

• Kev Cuam Tshuam Toughness:

  • DH36: ≥ 34 J ntawm -20 ° C

  • EH36: ≥ 34 J ntawm -40 ° C

Qhov kev sib xyaw ua ke no ua kom muaj kev tiv thaiv zoo rau kev tawg thiab kev hloov pauv, txawm tias nyob rau hauv kev ntxhov siab hloov pauv thiab qhov kub qis.

3. Qhov Tseem Ceeb ntawm Cov Hlau Muaj Zog Siab hauv Cov Platforms Offshore

Cov chaw ua haujlwm roj thiab roj av hauv hiav txwv ntsib qee qhov teeb meem ib puag ncig thiab kev ua haujlwm hnyav tshaj plaws. Lawv yuav tsum tiv taus nthwv dej muaj zog, cua hlob, thiab cov teebmeem corrosive ntawm dej hiav txwv, thaum txhawb nqa cov khoom siv hnyav thiab cov kav dej.

Cov phaj hlau DH36 thiab EH36siv dav vim tias lawv muab:

• Muaj peev xwm thauj khoom siabrau cov qauv deck thiab ceg.

• Kev tiv thaiv zoo heev rau kev qaug zognyob rau hauv cov xwm txheej cyclic loading.

• Lub zog cuam tshuam zoo tshaj plawskom tiv thaiv kev ua tsis tiav.

• Kev ua tau zoo tas li hauv qhov kub qispom nyob rau hauv dej tob thiab thaj chaw txias.

Cov yam ntxwv no ua rau lawv yog cov ntaub ntawv tseem ceeb raucov jack-up rigs, semi-submersible platforms, thiab cov chaw teeb tsa offshore uas ruaj khov.

4. Daim Ntawv Thov Hauv Cov Qauv Offshore

a. Cov Sab Saum Toj thiab Cov Qauv Rooj Vag

Cov phaj DH36 thiab EH36 yog siv rau cov lawj thiab cov nqaj txhawb nqa uas nqa cov tshuab hnyav, cov khoom siv khawb av, thiab cov chaw nyob. Lawv qhov sib piv ntawm lub zog thiab qhov hnyav ua rau cov qauv ruaj khov yam tsis ua rau lub platform hnyav dua.

b. Cov Cheebtsam ntawm lub tsho thiab ceg

Hauv cov platform offshore ruaj khov,ceg thiab cov thav duab tsho lojyuav tsum tiv taus ob qho tib si compressive thiab bending forces los ntawm nthwv dej thiab cua. Lub zog ntawm EH36 ua kom muaj kev ua tau zoo txawm tias thaum raug rau qhov kub ntawm dej qis dua xoom thiab kev co tas li.

c. Cov Txheej Txheem Tsim Khoom Uas Ntws Dej (FPSO, Semi-Submersible Rigs)

Cov qauv ntab dej ntsib kev txav mus los tas li thiab kev ntxhov siab ntawm kev qaug zog. EH36 qhov kev tiv thaiv kev cuam tshuam siab muab kev nyab xeeb mus sij hawm ntev rau cov hulls, pontoons, thiab cov qauv kem.

5. Cov Ntawv Thov Khoom Siv Hauv Dej

a. Cov Manifolds thiab Cov Qauv Hauv Qab Dej

Cov manifolds hauv qab dej faib cov roj thiab cov pa roj ntawm qhov tob heev. EH36 lub zog cuam tshuam zoo heev thaum kub qis ua kom cov qauv no tseem muaj kev nyab xeeb nyob rau hauv qhov siab hydrostatic thiab cov dej hiav txwv txias.

b. Cov Thoob Dej Siab thiab Cov Kav Dej Hauv Qab Hiav Txwv

DH36 thiab EH36 yog siv los tsimcov hlab dej siab hauv qab dej hiav txwv, cov risers, thiab cov kav dej txhawb nqa, xyuas kom meej tias muaj kev ruaj khov kho nyob rau hauv kev hloov pauv sab hauv thiab kev ntxhov siab thermal.

c. Cov Ncej Umbilical thiab Cov Txheej Txheem Anchoring

Qhov kev tawv thiab weldability ntawm EH36 ua rau nws zoo tagnrho rau cov kab ke anchoring hauv qab dej hiav txwv thiab cov thav duab txhawb nqa umbilical uas yuav tsum ua haujlwm tau zoo hauv cov chaw tob hauv hiav txwv.

6. Kev Tsim Khoom thiab Kev Ua Vuam

Cov phaj hlau DH36 thiab EH36lawv nyiam ua rau lawvzoo heev weldabilityLawv tuaj yeem tsim los ntawm kev siv cov txheej txheem xws li:

• Kev Vuam Hlau Tiv Thaiv (SMAW)

• Kev Vuam Arc Hauv Qab Av (SAW)

• Kev Siv Gas Metal Arc Vuam (GMAW)

• Kev Siv Flux-Cored Arc Vuam (FCAW)

Lawv covcov pa roj carbon tsawg (CEV)ua kom muaj qhov yuav tsum tau ua kom sov ua ntej tsawg kawg nkaus thiab txo qhov kev pheej hmoo ntawm kev tawg los ntawm hydrogen. Qhov no ua rau lawv haum rau cov qauv vuam loj uas pom hauv kev tsim kho hauv hiav txwv thiab hauv qab dej hiav txwv.

At sakysteel, txhua daim phaj raug hloov pauvKev kuaj ultrasonic (UT), kev kuaj Charpy impact, thiab kev txheeb xyuas qhov ntevlos lav qhov zoo tshaj plaws weldability thiab mechanical uniformity.

7. Kev Tiv Thaiv Kev Xeb thiab Kev Tiv Thaiv Cov Txheej Txheem

Cov qauv tsim hauv hiav txwv thiab hauv qab dej hiav txwv yeej raug rau qhov xeb ntawm dej ntsev, av noo siab, thiab cov kab mob me me. Txhawm rau txhim kho kev tiv thaiv xeb, cov hlau DH36 thiab EH36 feem ntau yog:

• Tua-blasted thiab shop primedua ntej xa khoom.

• Txheej nrog marine epoxy lossis zinc-nplua nuj primers.

• Tiv thaiv siv cov txheej txheem cathodickom tiv thaiv galvanic corrosion.

Cov kev kho mob no ua kom muaj lub neej ua haujlwm ntev thiab txo cov nqi kho kom zoo dua qub.

8. Kev Ua Tau Zoo Hauv Qhov Kub Qis

Ib qho ntawm cov yam ntxwv tseem ceeb tshaj plaws ntawm DH36 thiab EH36 steel plates yog lawvqhov kub tsis tshua muaj zog. EH36, tshwj xeeb, tswj tau qhov ductility thiab kev cuam tshuam tsis kam ntawm qhov kub qis li -40 ° C, ua rau nws zoo tagnrho rau kev ua haujlwm Arctic, cov nkoj tawg dej khov, thiab cov qauv dej tob hauv qab dej.

Lub peev xwm no tiv thaiv kev tawg yooj yim - qhov teeb meem loj hauv qhov chaw txias - ua kom muaj kev nyab xeeb hauv kev ua haujlwm thiab lub neej ntev ntawm cov qauv.

9. Cov Ntawv Pov Thawj ntawm Lub Koom Haum Kev Faib Tawm

Cov phaj hlau DH36 thiab EH36 muab los ntawmsakysteelua tau raws li lossis tshaj qhov yuav tsum tau ua ntawm cov koom haum loj, suav nrog:

• ABS (Lub Chaw Haujlwm Saib Xyuas Kev Thauj Khoom Hauv Tebchaws Meskas)

• DNV (Det Norske Veritas)

• Lloyd's Register (LR)

• Bureau Veritas (BV)

• RINA, NK, thiab GL

Cov ntawv pov thawj no lees paub tias ua raws li cov qauv kev tsim kho hauv hiav txwv thiab ntug dej hiav txwv thoob ntiaj teb, kom ntseeg tau tias txhua lub phaj tuaj yeem siv tau zoo hauv cov ntawv thov hnyav.

10. Cov txiaj ntsig ntawm DH36 thiab EH36 rau Offshore thiab Subsea Projects