LR EH62 steel phaj

 

 

 

 

General Weldability Considerations

LR EH62 steel phaj yog lub siab-lub zog shipbuilding hlau. Piv rau qis dua - lub zog shipbuilding steel qib xws li AH32 lossis DH36, weldability ntawm LR EH62 yog qhov nyuaj dua. Qhov no yog vim hais tias nws lub zog siab yog feem ntau nrog ib tug complex microstructure thiab alloy muaj pes tsawg leeg.

Cov ntsiab lus alloy siab dua hauv EH62 (xws li cov ntsiab lus xws li carbon, manganese, thiab qee zaum taug qab cov ntsiab lus zoo li niobium lossis vanadium) tuaj yeem ua rau muaj kev xav ntau dua rau kev ua kom tawv thaum vuam. Thaum cov hlau hardens ntau dhau nyob rau hauv tshav kub - cuam tshuam cheeb tsam (HAZ), nws ua nkig thiab nquag tawg.

Pre-welding Kev Npaj

Rau LR EH62, cua sov ua ntej feem ntau tseem ceeb dua piv rau cov qib qis zog. Cov cua sov ua ntej yuav pab txo qis qhov txias txias tom qab vuam thiab txo qhov kev pheej hmoo ntawm hardening thiab tawg hauv HAZ. Qhov ntsuas kub ua ntej rau EH62 tuaj yeem nyob ntawm 100 - 150 degree (nyob ntawm seb yam xws li phaj tuab thiab txheej txheem vuam), thaum rau qee qhov qis dua - qib zog xws li AH32, ua ntej - cua sov yuav tsis tas yuav los yog tuaj yeem nyob ntawm qhov ntsuas kub qis dua (nyob ib ncig ntawm 50 - 100 degree hauv qee kis).

Kev npaj ua ke rau EH62 kuj yuav tsum tau ua kom meej dua. Cov npoo yuav tsum tau welded yuav tsum huv si thiab tsis muaj kab mob xws li xeb, roj, thiab roj. Qhov no yog los xyuas kom meej fusion zoo thiab txo qhov kev pheej hmoo ntawm qhov tsis xws luag thaum vuam.

 

 

 

LR/EH62 ntxiv muaj zog Chemical Composition
Qib	Cov ntsiab lus Max (%)
	C	Si	Mn	P	S	Al	N
LR/EH62	0.20	0.55	1.70	0.030	0.030	0.015	0.020
	Nb	V	Ti	Cu	Cr	Ni	Mo
	0.02-0.05	0.03-0.10	0.02

 

 

Vuam txheej txheem thiab electrodes

Nyob rau hauv cov nqe lus ntawm cov txheej txheem vuam, EH62 feem ntau yuav tsum tau ceev faj tswj cov vuam tsis xws li vuam tam sim no, voltage, thiab vuam ceev. Piv txwv li, qhov qis vuam ceev yuav tsim nyog los xyuas kom meej fusion thiab tiv thaiv kev tsim cov kab nrib pleb.

Kev xaiv ntawm vuam electrodes kuj tseem ceeb dua rau EH62. Tshwj xeeb high-lub zog electrodes uas tuaj yeem phim cov khoom siv ntawm lub hauv paus hlau (EH62) yuav tsum tau siv. Cov electrodes no yog tsim los tso cov hlau sib xws nrog lub zog zoo sib xws thiab cov yam ntxwv zoo li lub hauv paus phaj. Nyob rau hauv sib piv, rau qis - lub zog shipbuilding steels, ib tug dav dav ntawm electrodes yuav siv tau, thiab cov yuav tsum tau rau txuam lub hauv paus hlau lub zog yog tsawg stringent.

Post-welding Kev kho mob

Tom qab - vuam kev kho cua sov (PWHT) tej zaum yuav xav tau ntau dua rau LR EH62 los txo cov kev ntxhov siab ntawm vuam thiab txhim kho qhov tawv ntawm qhov sib koom ua ke. PWHT tuaj yeem koom nrog cov txheej txheem xws li kev ntxhov siab - tshem tawm cov annealing, uas yuav pab txo qis cov kev ntxhov siab nyob hauv qhov vuam thiab HAZ. Rau qis-lub zog shipbuilding steels, qhov kev xav tau ntawm PWHT nyob ntawm cov ntawv thov tshwj xeeb thiab vuam cov xwm txheej, tab sis nws feem ntau tsis tshua muaj dua li EH62.

 

 

 

 

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 LR EH62 Steel Phaj, thiab tsim cov kev qhia 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: Lr eh62 steel phaj, Tuam Tshoj lr eh62 steel phaj lwm tus neeg, hoobkas