AB FQ47 Steel Phaj

 

 

Cov ntsiab lus carbon thiab Weldability

nyhuv: Ua kom cov pa roj carbon ntau hauv AB / AQ51 steel phaj feem ntau txo nws cov weldability. Carbon yog lub zog austenite stabilizer. Raws li cov ntsiab lus ntawm cov pa roj carbon monoxide nce, cov hlau yuav ua rau tawv tawv thaum vuam. Piv txwv li, nyob rau hauv qis - carbon steels (tsawg dua 0.2%) carbon), lub tshav kub - cuam tshuam cheeb tsam (HAZ) thaum lub sij hawm vuam muaj ib tug kuj me me nyiam harden. Txawm li cas los xij, thaum cov ntsiab lus carbon ntau tshaj 0.3%, HAZ tuaj yeem ua rau muaj zog heev.

Mechanism: High - carbon steels nyiam tsim martensite hauv HAZ vim txias txias tom qab vuam. Martensite yog ib theem nyuaj thiab nkig. Kev tsim ntawm martensite tuaj yeem ua rau tawg hauv qhov sib koom ua ke. Qhov sib txawv ntawm coefficient ntawm thermal expansion ntawm lub martensite thiab ib puag ncig lub hauv paus hlau kuj tuaj yeem ua rau muaj kev ntxhov siab ntxiv, ua rau muaj kev pheej hmoo ntawm kev tawg.

Manganese thiab Weldability

nyhuv: Manganese muaj txiaj ntsig zoo rau weldability rau qee yam. Nws ua raws li deoxidizer thaum lub sij hawm vuam txheej txheem. Manganese kuj tseem tuaj yeem txhim kho lub hardenability ntawm cov hlau nyob rau hauv txoj kev tswj ntau dua piv rau carbon. Hauv AB/AQ51 steel, qhov tsim nyog ntawm manganese (ib puag ncig 0.6 - 1.6%) tuaj yeem pab txo qis kev tsim cov oxides thiab sulfides phem thaum vuam, uas tuaj yeem ua rau cov porosity thiab suav nrog hauv lub vuam.

Mechanism: Manganese sib xyaw nrog sulfur los ua manganese sulfide (MnS), uas tsis tshua muaj teeb meem ntau dua li hlau sulfide (FeS). Hlau sulfide tuaj yeem ua rau kub tawg hauv qhov vuam vim tias nws muaj qhov qis melting thiab tsim cov yeeb yaj kiab ua kua ntawm cov qoob loo thaum lub sij hawm vuam. Manganese kuj pab tswj lub zog thiab tawv ntawm HAZ los ntawm kev txhawb nqa lub microstructure zoo dua.

 

 

 

 

 

 

AB/FQ47 Ntxiv muaj zog Chemical Composition nyob rau hauv Tempering thiab quenching
Qib	Cov ntsiab lus Max (%)
	C	Si	Mn	P	S	N
AB/FQ 47	0.18	0.55	1.60	0.025	0.025	0.02

 

 

Chromium thiab Weldability

nyhuv: Chromium tuaj yeem muaj kev cuam tshuam tsis zoo rau weldability thaum muaj ntau ntau. Hauv AB / AQ51 steel, yog tias cov ntsiab lus chromium siab txaus los tsim cov hlau tsis muaj steel - zoo li cov khoom (ntau tshaj 12% chromium), nws tuaj yeem ua rau muaj teeb meem xws li carbide nag lossis daus thaum vuam.

Mechanism: Chromium carbides tuaj yeem tsim ntawm cov ciam teb hauv HAZ thaum lub sijhawm vuam. Qhov tshwm sim no, lub npe hu ua rhiab heev, tuaj yeem ua rau txo qis hauv kev tiv thaiv corrosion ntawm welded sib koom. Tsis tas li ntawd, qhov tsim ntawm chromium carbides tuaj yeem ua rau lub depletion ntawm chromium nyob rau hauv cov matrix uas nyob ib sab, ua rau thaj tsam ntau dua corrosion. Txhawm rau txo qhov no, cov txheej txheem vuam tshwj xeeb xws li qis - cua sov - cov tswv yim vuam thiab tom qab - vuam cua sov yuav tsum tau kho.

 

 

 

 

 

 

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 AB FQ47 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 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: ab fq47 steel phaj, Tuam Tshoj ab fq47 steel phaj lwm tus neeg, hoobkas