Hauv kev lag luam hauv dej hiav txwv thiab ntug dej hiav txwv, kev xaiv cov hlau zoo yog qhov kev txiav txim siab tseem ceeb uas tuaj yeem cuam tshuam rau kev ua haujlwm ntawm cov qauv, kev nyab xeeb, thiab kev ua haujlwm mus sij hawm ntev. Ntawm cov hlau siv rau kev tsim kho nkoj uas muaj zog heev,EH36thiabDH36yog ob qib tseem ceeb tshaj plaws. Ob qho tib si tau tsim los kom tiv taus cov xwm txheej hnyav, tab sis lawv cov khoom siv kho tshuab tshwj xeeb, daim ntawv pov thawj, thiab kev haum rau Arctic thiab offshore ib puag ncig txawv. Tsab xov xwm no muab kev sib piv kom ntxaws los pab cov engineers, cov neeg tsim qauv, thiab cov thawj coj ua haujlwm txiav txim siab tau zoo.
Kev Txheeb Xyuas Txog EH36 thiab DH36
EH36yog cov hlau ua nkoj muaj zog heev uas tau pom zoo los ntawm cov koom haum faib tawm xws li American Bureau of Shipping (ABS) thiab Lloyd's Register (LR). Tus "E" hauv EH36 sawv cev rau "Extreme", qhia txog kev ruaj khov ntawm qhov kub qis, ua rau nws tsim nyog rau cov ntawv thov Arctic.
DH36, ntawm qhov tod tes, yog cov hlau muaj zog heev nrog cov ntawv thov zoo sib xws tab sis feem ntau yog tsim los rau kev siv hauv hiav txwv thiab dej hiav txwv. Nws muab cov khoom siv kho tshuab zoo heev thiab weldability, thiab tau lees paub dav rau kev siv hauv qhov chaw nruab nrab.
Txawm hais tias ob qib no ua haujlwm rau kev tsim kho hauv hiav txwv, kev nkag siab txog lawv qhov sib txawv yog qhov tseem ceeb thaum tsim cov nkoj thiab cov qauv hauv hiav txwv uas raug rau qhov txias heev thiab cov khoom thauj hnyav.
Kev Sib Txawv ntawm Cov Tshuaj Lom Zem
Ob leeg EH36 thiab DH36 yog cov hlau tsis tshua muaj hlau, muaj zog heev, tab sis qhov sib txawv me me hauv cov tshuaj lom neeg muaj feem cuam tshuam rau lawv cov kev ua tau zoo:
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EH36:Muaj cov pa roj carbon, manganese, phosphorus, sulfur, thiab me ntsis nickel thiab tooj liab. Cov khoom xyaw tswj tau ua rau muaj kev tawv thaum kub qis thiab txo qhov kev pheej hmoo ntawm kev tawg yooj yim.
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DH36:Cov khoom sib xyaw zoo sib xws muaj nyob, tab sis muaj cov kev txwv sib txawv me ntsis uas ua rau muaj zog dua li qhov txias heev.
Cov kev sib txawv no tsis pom tseeb tab sis tseem ceeb, tshwj xeeb tshaj yog nyob rau hauv Arctic cov xwm txheej uas cov ntaub ntawv raug rau qhov kub thiab txias qis dua xoom rau lub sijhawm ntev.
Kev Sib Piv Txog Cov Khoom Siv Kho Tshuab
Cov khoom siv kho tshuab ntawm cov hlau ua nkoj yog qhov tseem ceeb hauv kev txiav txim siab qhov tsim nyog rau Arctic thiab offshore siv. Cov kev sib piv hauv qab no qhia txog qhov sib txawv tseem ceeb:
1. Lub zog tawm los
Lub zog tawm los sawv cev rau qhov kev ntxhov siab uas cov hlau pib deform plastically:
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EH36:Lub zog tsawg kawg nkaus ntawm 355 MPa rau cov tuab txog li 50 hli.
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DH36:Lub zog tsawg kawg nkaus ntawm 345 MPa rau cov tuab txog li 50 hli.
EH36 muaj zog dua me ntsis, muab kev tiv thaiv zoo dua rau kev hloov pauv mus tas li hauv qab cov nra hnyav heev.
2. Lub zog tensile
Lub zog tensile yog qhov siab tshaj plaws uas cov hlau tuaj yeem tiv taus thaum raug ncab:
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EH36:Lub zog tensile yog txij li 490 txog 620 MPa.
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DH36:Lub zog tensile yog li ntawm 470 txog 630 MPa.
Ob qib muab kev ua tau zoo heev, tab sis EH36 qhov sib xws ntawm qhov kub qis dua ua rau nws txhim khu kev qha dua hauv Arctic daim ntawv thov.
3. Kev Cuam Tshuam Toughness
Kev cuam tshuam tawv yog qhov tseem ceeb heev rau kev tiv thaiv kev tawg yooj yim hauv qhov chaw txias:
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EH36:Ua tau raws li qhov kev sim cuam tshuam kub qis qis txog -40 ° C lossis qis dua, nyob ntawm seb lub koom haum faib tawm xav tau dab tsi.
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DH36:Haum rau cov xwm txheej hauv dej hiav txwv nruab nrab tab sis muaj qhov cuam tshuam qis dua ntawm qhov kub thiab txias qis heev.
EH36 qhov kev tawv tawv zoo dua nyob rau hauv qhov kub qis ua rau nws yog qhov kev xaiv zoo tshaj plaws rau cov nkoj thiab cov qauv ua haujlwm hauv dej Arctic.
4. Kev ntev thiab kev du
Kev ntev ntsuas qhov ductility thiab lub peev xwm nqus zog:
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EH36:Qhov ntev tsawg kawg nkaus nyob ib ncig ntawm 21%, muab kev nqus zog zoo dua nyob rau hauv cov khoom thauj tam sim ntawd.
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DH36:Qhov ntev tsawg kawg nkaus nyob ib puag ncig 19%, me ntsis ductile dua li EH36.
Kev ntev dua ua rau EH36 ua tau zoo dua hauv cov xwm txheej dynamic, uas yooj yim rau dej khov.
5. Kev vuam tau
Ob qho tib si EH36 thiab DH36 yog tsim los rau kev vuam zoo heev. Txawm li cas los xij, EH36 xav tau kev tswj hwm kev vuam zoo hauv cov ntu tuab kom khaws cia qhov kub qis. DH36 yooj yim dua rau kev vuam hauv cov ntawv thov tus qauv tab sis tej zaum yuav tsis ua tau raws li qhov yuav tsum tau ua kub qis heev yam tsis muaj cov txheej txheem tshwj xeeb.
Cov ntawv thov hauv Arctic thiab Offshore Ib puag ncig
Qhov kev xaiv ntawm EH36 thiab DH36 nyob ntawm seb muaj kev cuam tshuam rau ib puag ncig thiab cov kev xav tau ntawm qhov project li cas:
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Kev Ua Haujlwm Arctic:Cov nkoj tawg dej khov, cov platforms Arctic offshore, thiab cov nkoj tshawb fawb dej txias tau txais txiaj ntsig los ntawm EH36 qhov kev ua haujlwm zoo tshaj plaws hauv qhov kub qis.
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Cov Platforms Offshore:Cov qauv tsim tawm hauv hiav txwv, cov nkoj nruab nrab, thiab cov nkoj thauj khoom ib txwm muaj peev xwm siv DH36 tau zoo.
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Cov Khoom Siv Hauv Hiav Txwv:Cov cranes, decks, thiab bulkheads hauv thaj chaw txias xav tau EH36, thaum cov khoom siv zoo sib xws hauv huab cua nruab nrab tuaj yeem siv DH36.
EH36 qhov kev txhim kho kom ruaj khov ua kom muaj kev ruaj khov ntawm cov qauv thiab txo qhov kev pheej hmoo ntawm kev tawg yooj yim hauv cov xwm txheej subzero, ua rau nws zoo tagnrho rau cov chaw ib puag ncig hnyav.
Xaiv Qib Hlau Zoo
Thaum xaiv ntawm EH36 thiab DH36, xav txog cov hauv qab no:
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Tej Yam Ib puag ncig:Txheeb xyuas qhov kub tsawg kawg nkaus thiab qhov muaj peev xwm thauj dej khov.
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Cov Cai Tswjfwm:Txheeb xyuas cov ntawv pov thawj ntawm lub koom haum faib tawm thiab cov lus qhia ntawm qhov project.
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Kev Ua Haujlwm Txhua Yam:Tshawb xyuas lub zog tensile, lub zog yield, kev cuam tshuam toughness, thiab elongation.
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Cov Kev Xav Txog Kev Tsim Khoom:Soj ntsuam qhov weldability, phaj tuab, thiab cov txheej txheem tsim khoom.
SakySteelmuab ob qho tib si EH36 thiab DH36 phaj nrog kev lees paub zoo, tau ntawv pov thawj tag nrho thiab npaj rau kev thov Arctic thiab offshore. Los ntawm kev xaiv sakySteel, cov neeg siv khoom xyuas kom meej tias nkag mus rau cov phaj hlau ua haujlwm siab nrog cov khoom siv kho tshuab sib xws thiab kev muab khoom txhim khu kev qha rau cov haujlwm loj.
Xaus lus
EH36 thiab DH36 yog cov hlau muaj zog heev uas siv dav hauv kev tsim nkoj thiab kev siv hauv hiav txwv. EH36 sawv tawm rau kev ua haujlwm kub qis heev thiab kev ruaj khov dua, ua rau nws zoo tagnrho rau thaj chaw Arctic. DH36 tseem yog qhov kev xaiv zoo rau cov qauv tsim hauv hiav txwv thiab dej hiav txwv, muab lub zog siab thiab kev sib txuas zoo.
Kev nkag siab txog qhov sib txawv ntawm cov khoom siv kho tshuab, cov tshuaj lom neeg sib xyaw, thiab kev haum rau ib puag ncig yog qhov tseem ceeb rau kev xaiv qhov zoo. Nrog cov neeg muag khoom ntseeg siab xws lisakySteel, cov thawj coj saib xyuas qhov project tuaj yeem ua kom lawv xaiv qib hlau tsim nyog, ua raws li cov qauv thoob ntiaj teb, thiab ua tiav kev nyab xeeb thiab kev ruaj khov zoo tshaj plaws.
Los ntawm kev soj ntsuam xyuas cov kev xav tau ntawm qhov project thiab cov xwm txheej ib puag ncig, kev xaiv ntawm EH36 thiab DH36 ua rau yooj yim, ua kom ntseeg tau tias muaj kev ntseeg siab ntawm cov qauv thiab kev ua haujlwm ntev rau cov nkoj thiab cov qauv hauv hiav txwv hauv txhua qhov chaw ib puag ncig marine.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-17-2025