LR IB Steel

Shipbuilding Steel: Cov Khoom Tseem Ceeb rau Maritime Excellence

 

Shipbuilding steel yog cov khoom siv tseem ceeb hauv kev tsim cov nkoj hauv hiav txwv, ua lub luag haujlwm tseem ceeb hauv kev ua kom muaj kev nyab xeeb, kav ntev, thiab kev ua haujlwm ntawm cov nkoj. Yuav kom ua tau raws li qhov xav tau ntawm thaj chaw marine, shipbuilding steel yuav tsum muaj kev sib xyaw ua ke ntawm cov khoom tshwj xeeb. Cov lus qhia ntxaws no tshawb txog cov khoom tseem ceeb uas cov nkoj tsim cov hlau feem ntau xav tau.

 

Lub zog

 

Ib qho ntawm cov khoom tseem ceeb ntawm shipbuilding steel yog lub zog siab. Cov nkoj tau raug rau ntau lub zog thiab kev ntxhov siab thaum lawv ua haujlwm, suav nrog qhov hnyav ntawm cov khoom thauj, lub zog ntawm lub hiav txwv, thiab kev cuam tshuam ntawm nthwv dej. High-strength steel ua rau lub nkoj lub qauv tiv thaiv cov rog tsis muaj deformation lossis tsis ua haujlwm.

 

Lub zog ntawm shipbuilding steel yog ntsuas nyob rau hauv cov nqe lus ntawm yield zog thiab tensile zog. Lub zog tawm los sawv cev rau qhov kev ntxhov siab uas cov hlau pib deform mus tas li, thaum lub zog tensile yog qhov siab tshaj plaws ntawm cov hlau tuaj yeem tiv taus ua ntej tawg. Shipbuilding steels nrog cov txiaj ntsig siab dua thiab lub zog tensile tuaj yeem txhawb nqa hnyav dua thiab muaj peev xwm tiv taus qhov hnyav ntawm hiav txwv.

 

Piv txwv li, cov hlau muaj zog xws li AH36 thiab DH36 feem ntau yog siv hauv nkoj tsim. Cov hlau no muaj qhov ua tau zoo nyob rau hauv thaj tsam ntawm 355 MPa thiab tensile zog mus txog 510 MPa. Kev siv cov hlau zoo li no tso cai rau kev tsim cov nkoj loj dua thiab muaj txiaj ntsig zoo dua thaum tuav cov txheej txheem kev ncaj ncees.

 

Toughness

 

Toughness yog lwm yam khoom tseem ceeb ntawm shipbuilding steel. Toughness yog hais txog lub peev xwm ntawm cov hlau kom nqus tau lub zog thiab tiv thaiv kev puas tsuaj. Nyob rau hauv ib puag ncig marine, ships raug rau dynamic loading tej yam kev mob, xws li cuam tshuam los ntawm nthwv dej thiab kev sib tsoo nrog lwm cov nkoj los yog khoom. Cov hlau tawv tawv tuaj yeem tiv taus cov kev cuam tshuam no yam tsis muaj kev tawg lossis tawg, ua kom muaj kev nyab xeeb ntawm lub nkoj thiab nws cov neeg coob.

 

Toughness yog ntsuas los ntawm kev ua tej yam kev ntsuam xyuas ntawm qhov sib txawv kub. Shipbuilding steels feem ntau yuav tsum tau muaj qee qhov tsawg kawg nkaus ntawm qhov toughness ntawm qhov kub thiab txias kom ntseeg tau tias lawv cov kev ua tau zoo hauv cov dej hiav txwv txias. Piv txwv li, steels siv nyob rau hauv cov cheeb tsam arctic yuav tsum muaj qhov kub thiab txias toughness los tiv thaiv nkig tawg.

 

Lub microstructure ntawm shipbuilding steel plays lub luag haujlwm tseem ceeb hauv kev txiav txim siab nws qhov toughness. Fine-grained steels nrog homogeneous microstructure zoo li tawv dua li steels nrog coarse nplej los yog cov qauv inhomogeneous. Tsis tas li ntawd, qhov sib ntxiv ntawm qee yam alloying ntsiab lus, xws li npib tsib xee thiab manganese, tuaj yeem txhim kho qhov tawv tawv ntawm nkoj tsim cov hlau.

 

Qib Steel	C	Si	Mn	P	S	Als
A	Tsawg dua lossis sib npaug rau 0.21	Tsawg dua lossis sib npaug rau 0.50	Ntau dua lossis sib npaug li 2.5c	Tsawg dua lossis sib npaug rau 0.035	Tsawg dua lossis sib npaug rau 0.035
B	Tsawg dua lossis sib npaug rau 0.21	Tsawg dua lossis sib npaug rau 0.35	0.8~1.2	Tsawg dua lossis sib npaug rau 0.035	Tsawg dua lossis sib npaug rau 0.035
D	Tsawg dua lossis sib npaug rau 0.21	Tsawg dua lossis sib npaug rau 0.35	0.6~1.2	Tsawg dua lossis sib npaug rau 0.035	Tsawg dua lossis sib npaug rau 0.035	Ntau dua lossis sib npaug rau 0.015
E	Tsawg dua lossis sib npaug rau 0.18	Tsawg dua lossis sib npaug rau 0.35	0.7~1.2	Tsawg dua lossis sib npaug rau 0.035	Tsawg dua lossis sib npaug rau 0.035	Ntau dua lossis sib npaug rau 0.015
AW 32	Tsawg dua lossis sib npaug rau 0.18	Tsawg dua lossis sib npaug rau 0.50	0.9~1.6	Tsawg dua lossis sib npaug rau 0.035	Tsawg dua lossis sib npaug rau 0.035	Ntau dua lossis sib npaug rau 0.015
DH 32	Tsawg dua lossis sib npaug rau 0.18	Tsawg dua lossis sib npaug rau 0.50	0.9~1.6	Tsawg dua lossis sib npaug rau 0.035	Tsawg dua lossis sib npaug rau 0.035	Ntau dua lossis sib npaug rau 0.015
EH 32	Tsawg dua lossis sib npaug rau 0.18	Tsawg dua lossis sib npaug rau 0.50	0.9~1.6	Tsawg dua lossis sib npaug rau 0.035	Tsawg dua lossis sib npaug rau 0.035	Ntau dua lossis sib npaug rau 0.015
FH 32	Tsawg dua lossis sib npaug rau 0.18	Tsawg dua lossis sib npaug rau 0.50	0.9~1.6	Tsawg dua lossis sib npaug rau 0.035	Tsawg dua lossis sib npaug rau 0.035	Ntau dua lossis sib npaug rau 0.015
AW 36	Tsawg dua lossis sib npaug rau 0.18	Tsawg dua lossis sib npaug rau 0.50	0.9~1.6	Tsawg dua lossis sib npaug rau 0.035	Tsawg dua lossis sib npaug rau 0.035	Ntau dua lossis sib npaug rau 0.015
DH 36	Tsawg dua lossis sib npaug rau 0.18	Tsawg dua lossis sib npaug rau 0.50	0.9~1.6	Tsawg dua lossis sib npaug rau 0.035	Tsawg dua lossis sib npaug rau 0.035	Ntau dua lossis sib npaug rau 0.015
EH 36	Tsawg dua lossis sib npaug rau 0.18	Tsawg dua lossis sib npaug rau 0.50	0.9~1.6	Tsawg dua lossis sib npaug rau 0.035	Tsawg dua lossis sib npaug rau 0.035	Ntau dua lossis sib npaug rau 0.015
FH 36	Tsawg dua lossis sib npaug rau 0.18	Tsawg dua lossis sib npaug rau 0.50	0.9~1.6	Tsawg dua lossis sib npaug rau 0.035	Tsawg dua lossis sib npaug rau 0.035	Ntau dua lossis sib npaug rau 0.015
AW 40	Tsawg dua lossis sib npaug rau 0.18	Tsawg dua lossis sib npaug rau 0.50	0.9~1.6	Tsawg dua lossis sib npaug rau 0.035	Tsawg dua lossis sib npaug rau 0.035	Ntau dua lossis sib npaug rau 0.015
DH40	Tsawg dua lossis sib npaug rau 0.18	Tsawg dua lossis sib npaug rau 0.50	0.9~1.6	Tsawg dua lossis sib npaug rau 0.035	Tsawg dua lossis sib npaug rau 0.035	Ntau dua lossis sib npaug rau 0.015

 

 

Formability

 

Formability yog lub peev xwm ntawm shipbuilding steel kom zoo li tus thiab tsim rau hauv cov khoom tsim nyog. Cov nkoj yog cov qauv tsim nrog ntau yam duab thiab cov duab geometry, thiab cov hlau siv hauv lawv cov kev tsim kho yuav tsum tuaj yeem khoov, dov, thiab welded rau hauv cov duab no. Zoo formability tso cai rau kev ua tau zoo fabrication thiab txo qhov kev pheej hmoo ntawm kev tsis xws luag thaum lub sij hawm tsim khoom.

 

Lub formability ntawm shipbuilding steel yog cuam tshuam los ntawm ntau yam, nrog rau nws cov ductility, yield zog, thiab hardenability. Steels nrog siab ductility thiab tsis tshua muaj zog tawm los yog feem ntau formable. Tsis tas li ntawd, qhov sib ntxiv ntawm qee cov ntsiab lus alloying tuaj yeem txhim kho cov formability ntawm steel.

 

Los xyuas kom meej formability, shipbuilding steels feem ntau raug soj ntsuam rau lawv cov khoom thiab cov yam ntxwv formability. Qhov no tuaj yeem suav nrog kev sim tensile, kev sim khoov, thiab lwm yam kev sim los txiav txim siab cov hlau muaj peev xwm tsim tau rau hauv cov duab uas xav tau.

 

 

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 cov LR B Steel, 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 txhim khu kev qha thiab cov khoom zoo 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: Tuam Tshoj lr b steel lwm tus neeg, hoobkas