DNV Marine Steel Phaj Qib D

los yog DNV Marine Steel Phaj Qib E siv nyob rau hauv kev lag luam shipbuilding, muaj ntau yam qauv thiab ntawv pov thawj muaj feem xyuam nrog:

DNV Certification Nws tus kheej: DNV (Det Norske Veritas) yog ib pawg neeg paub zoo thiab muaj kev hwm hauv kev lag luam maritime. Cov hlau phaj tau ntawv pov thawj raws li DNV Marine Steel Phaj Qib E yog ib daim ntawv pov thawj tseem ceeb. DNV muaj nws tus kheej cov kev cai thiab cov kev cai rau qhov zoo, txhua yam khoom, tshuaj muaj pes tsawg leeg, thiab manufacturing txheej txheem ntawm cov hlau los xyuas kom meej nws haum rau shipbuilding8.

Mechanical Property Requirements:

Yield zog: Lub zog tawm los ntawm DNV Marine Steel Phaj Qib E feem ntau yuav tsum tau ua kom tau raws li cov txiaj ntsig tshwj xeeb, uas feem ntau yog nyob rau hauv qee qhov ntau los xyuas kom meej cov qauv kev ncaj ncees ntawm lub nkoj. Piv txwv li, lub zog tawm los yuav tsum yog tsawg kawg yog qee tus nqi (xws li 235 MPa hauv qee kis).

Tensile zog: Kuj tseem muaj qhov yuav tsum tau ua rau lub zog tensile ntawm cov phaj steel kom tiv taus ntau yam kev ntxhov siab uas tau ntsib thaum lub nkoj ua haujlwm.

Elongation: Tsim nyog elongation yog tsim nyog los xyuas kom meej cov hlau yuav deform mus rau ib tug tej yam uas tsis muaj fracturing yooj yim, muab ib co theem ntawm ductility rau lub nkoj tus qauv.

Kev kuaj Ultrasonic: Kev ntsuam xyuas ultrasonic feem ntau yuav tsum tau kuaj xyuas cov teeb meem sab hauv lossis kev tsis sib xws hauv cov phaj hlau. Qhov no yuav pab xyuas kom meej qhov zoo thiab kev ncaj ncees ntawm cov khoom ua ntej nws yuav siv nyob rau hauv shipbuilding.

 

 

 

Chemical Composition Limits: Cov tshuaj muaj pes tsawg leeg ntawm cov hlau yog nruj me ntsis tswj. Kev txwv yog teem rau cov ntsiab lus xws li carbon (C), silicon (Si), manganese (Mn), phosphorus (P), thiab sulfur (S) kom ntseeg tau tias cov hlau muaj cov khoom uas xav tau xws li lub zog, corrosion resistance, thiab weldability. Piv txwv li, cov ntsiab lus carbon tej zaum yuav raug txwv rau qee feem pua ​​​​ntawm qhov sib npaug ntawm lub zog thiab ductility8.

Impact Resistance: Nyob rau hauv dej hiav txwv txias los yog nyob rau hauv hnyav ua hauj lwm tej yam kev mob, lub steel phaj yuav tsum muaj kev cuam tshuam zoo. Kev ntsuam xyuas xws li Charpy V-notch cuam tshuam qhov ntsuas tau ua nyob rau ntawm qhov kub thiab txias (xws li, -20 degree lossis qis dua hauv qee kis) kom ntseeg tau tias cov hlau tuaj yeem tiv taus qhov cuam tshuam tsis muaj kev puas tsuaj.

Mill Test Certificate: Daim ntawv pov thawj zeb xeem tau muab tso rau hauv EN 10204 hom 3.1/3.2 feem ntau yuav tsum tau ua. Daim ntawv pov thawj no muab cov ncauj lus kom ntxaws txog cov tshuaj muaj pes tsawg leeg, cov khoom siv kho tshuab, thiab lwm yam ntaub ntawv tseem ceeb ntawm cov hlau phaj raws li kev soj ntsuam los ntawm cov chaw tsim khoom.

Z-Test (Thickness Direction Test): Rau cov phaj tuab tuab, Z-test (tseem hu ua kev ntsuas los ntawm cov thickness tensile test) yuav tsum tau ua kom ntseeg tau tias cov khoom siv zoo ib yam ntawm cov thickness. Qhov no yog ib qho tseem ceeb rau cov qauv kev ncaj ncees ntawm cov khoom loj hauv nkoj ua los ntawm cov hlau tuab.

Vim li cas thiaj xaiv peb?
Peb txaus siab rau peb lub peev xwm los muab cov kev cai daws teeb meem rau peb cov neeg siv khoom cov kev xav tau tshwj xeeb.
Peb txheeb xyuas thiab sib piv cov khoom dhau los thiab cov xwm txheej tam sim no ntawm peb DNV Marine Steel Phaj Qib D, thiab tsim cov txheej txheem tshiab thiab cov txheej txheem.
Peb cov neeg siv khoom ntseeg peb kom xa cov khoom zoo Cold-rolled Steel khoom raws sij hawm thiab ntawm pob nyiaj siv.
Peb nruj me ntsis siv cov kev pab cuam sov so thiab kev xav tom qab muag, ua raws li kev txhim kho kev ua haujlwm zoo.
Peb muab ntau hom Cold-rolled Steel khoom kom tau raws li cov neeg siv khoom xav tau.
Peb ua raws li cov neeg siv khoom-centric thiab hom-taw qhia kev lag luam lub tswv yim, thiab txuas ntxiv muab cov neeg siv khoom lag luam txhim khu kev qha thiab zoo heev thiab cov kev pabcuam.
Peb lub Hoobkas tau cog lus los txhawb nqa cov qauv siab tshaj plaws ntawm kev nyab xeeb thiab zoo.
Txhua tus neeg ua haujlwm ntawm peb lub tuam txhab thiab txhua lub tuam haujlwm ua haujlwm ua ke los ua ke kev tswj hwm kev lag luam, kev tshaj lij thev naus laus zis, kev txheeb cais ntau thiab kev kawm ideological.
Peb cov khoom siv Cold-rolled Steel paub txog lawv cov kav ntev thiab kev ntseeg tau.
Kev vam khom rau qhov zoo tshaj plaws thiab muaj txiaj ntsig zoo ntawm cov khoom loj, peb muaj peev xwm ua tau raws li qhov sib txawv ntawm peb cov neeg siv khoom.

Cim npe nrov: dnv marine steel phaj qib d, Tuam Tshoj dnv marine steel phaj qib d lwm tus neeg, hoobkas