Lub thickness ntawm LR Qib A Shipbuilding Steel Phaj tuaj yeem muaj ob peb qhov tseem ceeb ntawm nws cov weldability, raws li cov lus qhia hauv qab no:

Thaum tshav kub kub dissipation thiab cua sov input Requirement

 

Daim hlau nyias:

Thinner LR Qib A steel daim hlau, feem ntau yog cov tuab ntawm ob peb millimeters mus txog ib ncig ntawm 10 - 15 hli, muaj cov cua sov sai dua. Yog li ntawd, thaum lub sij hawm welding, ib qho qis cua sov input feem ntau yog txaus kom ua tau zoo fusion ntawm lub hauv paus hlau thiab muab tub lim hlau. Welders siv tau me me vuam electrodes los yog hlau diameters, qis vuam tam sim no, thiab kuj ceev vuam ceev. Piv txwv li, nyob rau hauv cov pa roj arc vuam (GMAW) ntawm 6 hli tuab LR Qib A phaj, vuam tam sim no nyob rau hauv qhov ntau ntawm 100 - 150 amps tej zaum yuav haum, nrog rau cov vuam ceev uas tso cai rau cov hlaws du tsis muaj. overheat build-up.

 

Kev kub ceev ceev kuj tseem pab txo qis qhov loj ntawm thaj chaw kub ntxhov (HAZ). Txij li thaum tsis tshua muaj cua sov yog absorbed los ntawm lub hauv paus hlau, muaj tsawg alternation ntawm lub microstructure nyob rau hauv ib ncig ntawm lub weld, txo qhov kev pheej hmoo ntawm kev hloov nyob rau hauv txhua yam khoom thiab tej zaum yuav tawg nyob rau hauv lub HAZ.

 

Cov phaj tuab:

Raws li lub thickness ntawm LR Qib A steel phaj nce, hais tshaj 15 - 20 hli, cua sov dissipation yuav qeeb. Qhov no yuav tsum tau muaj cua sov ntau dua thaum lub sij hawm vuam los xyuas kom meej tias cov weld nkag mus los ntawm tag nrho cov tuab ntawm cov phaj thiab ua tiav cov fusion zoo ntawm cov hauv paus hniav. Welders yuav tsum tau siv cov electrodes loj dua los yog muab tub lim, ua kom cov vuam tam sim no, thiab muaj peev xwm ua kom lub vuam ceev. Piv txwv li, thaum vuam 30 hli tuab LR Qib A phaj siv shielded hlau arc vuam (SMAW), vuam tam sim no nyob rau hauv qhov ntau ntawm 180 - 250 amps tej zaum yuav tsim nyog, nrog rau kev tswj xyuas kom zoo dua vuam ceev kom tsis txhob muaj qhov tsis xws luag. xws li kev nkag tsis tiav lossis tsis muaj fusion.

 

Txawm li cas los xij, qhov hluav taws xob loj dua rau cov phaj tuab ua rau thaj tsam muaj kev kub ntxhov ntau dua. HAZ txuas ntxiv txhais tau hais tias feem ntau ntawm cov hlau hauv paus yog raug rau thermal cycling, uas tuaj yeem ua rau cov qoob loo loj hlob thiab hloov pauv hauv microstructure. Qhov no tuaj yeem ua rau txo qis ntawm qhov tawv thiab lub zog ntawm HAZ thiab ua rau muaj kev cuam tshuam rau kev tawg, tshwj xeeb tshaj yog tias cov txheej txheem vuam tsis raug ua raws.

 

Vuam Defect Susceptibility

 

Porosity:

Thinner LR Qib A daim hlau tsis tshua muaj peev xwm tsim porosity thaum vuam. Nrog kev tu kom zoo thiab kev siv cov khoom siv vuam tsim nyog, qhov kev sib tw ceev ceev vim muaj cua sov sai dua tuaj yeem pab txhawm rau txhawm rau tsawg dua cov pa npuas hauv cov hlau vuam. Piv txwv li, nyob rau hauv phau ntawv welding ntawm nyias daim hlau, yog siv cov txheej txheem vuam thiab qhuav electrodes, porosity teeb meem yog tsawg.

Hauv qhov sib piv, cov phaj tuab muaj qhov pheej hmoo siab dua ntawm porosity. Qhov qis qis qis tso cai rau ntau lub sijhawm rau cov pa roj nkag mus rau hauv lub pas dej molten weld. Ntxiv mus, yog tias qhov vuam ceev qeeb dhau los yog qhov tsis zoo ntawm cov vuam tsis zoo, lub pas dej molten tseem nyob hauv lub xeev ua kua rau lub sij hawm ntev, ua rau muaj feem cuam tshuam ntawm cov pa roj. Txhawm rau txo qhov no, cov txheej txheem zoo li preheating kom zoo, siv cov khoom siv hluav taws xob tsawg (hauv SMAW), thiab kev tswj xyuas zoo ntawm qhov chaw vuam (kom txo cov dej noo thiab lwm qhov chaw roj) yog qhov tseem ceeb.

 

 

 

LR Qib A Ship Steel Mechanical Properties:

Qib	Thickness	Yield zog	Tensile zog	Elongation	Impact Zog
	(mm)	MPa (min)	MPa	% (min)	(KV J) (min)
					20 degree
LR Qib A	4-260	235	400-520	22

 

 

 

 

 

Vuam txheej txheem complexity

 

Daim hlau nyias:

Vuam thinner LR Qib A steel daim hlau yog qhov ncaj. Cov txheej txheem vuam yog yooj yim los tswj, thiab cov txheej txheem vuam zoo li GMAW lossis SMAW tuaj yeem ua tau zoo nrog cov txheej txheem txheej txheem. Muaj tsawg xav tau rau txoj kev preheating los yog tom qab vuam kev kho cua sov hauv feem ntau. Piv txwv li, nyob rau hauv kev tsim kho cov khoom me me ua los ntawm nyias LR Qib A daim hlau, cov vuam tuaj yeem ua tiav cov vuam ua haujlwm sai nrog kev teeb tsa tsawg thiab kev saib xyuas.

 

Cov phaj tuab:

Vuam thicker daim hlau xav tau txoj kev vuam ntau dua. Kev tswj xyuas kom meej ntawm cov khoom siv hluav taws xob, kev ua raws li cov txheej txheem preheating thiab interpass kub, thiab feem ntau siv cov txheej txheem vuam tshwj xeeb lossis cov cuab yeej tsim nyog. Tsis tas li ntawd, kev tshuaj xyuas tom qab vuam yuav tsum tau ua kom zoo dua vim tias muaj kev pheej hmoo siab dua ntawm qhov tsis xws luag. Piv txwv li, thaum tsim lub hull qauv ntawm lub nkoj loj siv tuab LR Qib A daim hlau, cov txheej txheem vuam cov lus qhia tshwj xeeb (WPS) yuav tsum tau tsim thiab ua raws li kev ua kom zoo, thiab ntau yam kev sim uas tsis muaj kev puas tsuaj yuav raug ua hauj lwm los xyuas kom meej qhov kev ncaj ncees. cov welded pob qij txha.

 

Hauv cov ntsiab lus, qhov tuab ntawm LR Qib A Shipbuilding Steel Phaj cuam tshuam rau nws txoj kev weldability, nrog cov phaj tuab nthuav qhia cov kev cov nyom ntau dua thiab yuav tsum tau ceev faj txog kev tswj cov vuam tsis zoo thiab cov txheej txheem kom ua tiav lub suab thiab tsis muaj qhov tsis zoo welds piv rau cov thinner.

 

 

 

 

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 Qib A Shipbuilding 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 sijhawm thiab ntawm kev siv nyiaj.
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.
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: lr qib ib shipbuilding steel phaj, Tuam Tshoj lr qib ib shipbuilding steel phaj lwm tus neeg, hoobkas