BV (Bureau Veritas) High-Strength Carbon Nkoj / Choj Kub Rolled Steel Phaj

(A) High-Strength Nkoj Phaj Hlau

Nyob rau hauv "F550 siab zog phaj steel rau shipbuilding tsim los ntawm TMCP", qhov nruam txias transformation (CCT) tus cwj pwm ntawm tsawg-carbon microalloyed SiMnCrNiMo tuab phaj hlau tau kawm siv ib tug Gleeble 3800 thermomechanical simulator, thiab ib tug series ntawm thermomechanical tswj txheej txheem (TMCP) kev ua haujlwm tau ua los ntawm kev siv ob-siab reversible pilot dov zeb nrog lub tshuab ua kom txias txias. Los ntawm TMCP, F550 shipbuilding phaj nrog lub zog tawm los (YS) ntau dua 590 MPa thiab qhov nruab nrab Charpy V-notch (CVN) lub zog siab dua 230 J ntawm -60 degree tau tsim tiav. Kev dov zaum kawg tau ua tiav ntawm 800 - 820 degree nrog qhov txo qis ntawm 67%, ua raws li kev cuam tshuam nrawm nrawm ntawm 350 - 500 degree, uas yog qhov tseem ceeb rau kev tau txais ib qho zoo bainite microstructure thiab kev ua tau zoo tshaj hauv F550 phaj.

Nyob rau hauv "High Strength Steel Phaj rau Loj Thawv Nkoj", loj-thickness steel daim hlau nrog kev sib xyaw zoo ntawm lub zog siab, toughness, thiab weldability, xws li EH36, EH40, thiab EH47 qib high-strength nkoj phaj steel, tau tsim los ntawm optimizing cov tshuaj muaj pes tsawg leeg thiab TMCP txheej txheem tsis. Ti thiab Nb microalloying cov ntsiab lus tau ntxiv rau peb qib steel no los txhim kho lub zog thiab tawv ntawm lub substrate. Lub zog ntawm EH47 qib substrate tau ntxiv dag zog los ntawm kev ua kom cov khoom hloov pauv xws li manganese, tooj liab, npib tsib xee, lossis chromium. Txhawm rau tsim cov EH36 steel phaj haum rau cov khoom siv hluav taws xob siab tshaj 550 kJ / cm2, thermal stability ntawm TiN hais tau raug txhim kho kom tau txais cov tawv tawv zoo dua hauv thaj chaw weld kub cuam tshuam. Lub thermally ruaj khov TiN hais tau zoo inhibited cov qoob loo loj hlob nyob rau hauv weld tshav kub cuam tshuam cheeb tsam, yog li ua rau zoo toughness.

 

 

 

(B) High-Strength Choj Hlau Daim Hlau

Nyob rau hauv "Kev tshuaj xyuas rau Scar Defect ntawm Q345q Choj Hlau Phaj Nto", cov caws pliav tsis xws luag ntawm cov phaj kub dov saum npoo ntawm choj hlau Q345q tau txheeb xyuas. Cov txiaj ntsig tau pom tias qhov caws pliav tsis xws luag yog cov hlau tsis muaj hlau loj lossis cov slag uas tsis yog xim hlau, thiab cov pob qij txha tau tsim nyob rau hauv qhov caws pliav. Cov tshuaj muaj pes tsawg leeg ntawm cov caws pliav yog oxides, silicates, los yog aluminates uas muaj Si, Ti, Al, Ca, Mg, uas tau tsim thaum lub sij hawm steelmaking txheej txheem. Yog li ntawd, qhov zoo ntawm cov phaj hlau tuaj yeem txhim kho los ntawm kev tshem tawm cov khoom tsis yog hlau loj thaum lub sij hawm ua cov txheej txheem steel los yog ntxuav cov slab ua ntej dov.

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 CCS E40 Marine Ship Steel Phaj, 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, ntau txoj hauv kev txheeb cais thiab kev kawm ideological.
Peb cov khoom siv Cold-rolled Steel paub txog lawv cov kav ntev thiab kev ntseeg tau.
Relying ntawm superior tej yam kev mob thiab muaj zog zoo ntawm cov khoom loj, peb muaj peev xwm ua tau raws li qhov sib txawv ntawm peb cov neeg muas zaub.

Cim npe nrov: ccs e40 marine nkoj steel phaj, Tuam Tshoj ccs e40 marine nkoj steel phaj lwm tus neeg, hoobkas