Dab tsi ntawm vuam consumables yuav tsum tau xaiv thaum vuam A333 Gr.3 Steel Yeeb Nkab?
To ensure that the weld metal matches the parent metal's properties, especially low-temperature toughness, low-hydrogen welding consumables with a matching alloy system should be selected. Rau submerged arc vuam (pom), nruab nrab lossis qhov yooj yim fluxes ua ke nrog nickel {}}}} muaj cov xov hlau feem ntau siv. Rau lo stick hlau vuam (smws) lossis roj tungsten arc vuam (gtaw), raws li tau teev nyob rau hauv Aws A5.28m, yuav tsum tau xaiv. Cov ntsiab lus ntawm cov neeg siv hluav taws xob muaj cov ntsiab lus uas yog tus niam txiv hlau, ua kom muaj qhov tseem ceeb ntawm kev ua niam txiv uas muaj txiaj ntsig zoo.
Yuav tsum muaj cov kev txiav txim siab tshwj xeeb yog li cas thaum vuam A333 Gr.3?
Qhov kev txiav txim siab thawj zaug thaum vuam hom tsawg - cov hlau kub yog kom nruj me ntsis rau qis- hydrogen welding cov txheej txheem txheej txheem. Qhov no suav nrog kom qhuav lub vuam pas nrig thiab flux, thiab tu cov qhov zawj thiab cov dej paug los tiv thaiv hydrogen {}} qhov ua rau muaj kev tawg (HIC). Preheat thiab interpass qhov kub siab yuav tsum tau qhia meej meej (feem ntau pom zoo ntawm 100 {}}} 150 qib) kom tsis txhob muaj microstructure. Ntau {-} Pass vuam txheej txheem nrog cov kev tawm suab cua sov tsawg yuav tsum ua haujlwm los ua kom ua kom ua kom zoo rau Weld lis. Tsis tas li ntawd, cov ntawv teev tseg, cov ntawv teev tseg - Weld Kev Kho Cua Sov (PWHT) yuav tsum ua kom tiav. Tag nrho cov kev ntsuas no rub ib ncig ntawm ib lub hom phiaj tseem ceeb: tiv thaiv cov khoom siv qis-kub nyuaj los ntawm kev cuam tshuam cov txheej txheem cua sov.
Vim li cas thiaj tshaj tawm - Weld Kev Kho Mob Kub (Pwhat) yog li tseem ceeb rau hom kev sib koom ua ke welded?
Tshaj tawm - Weld Kev Kho Cua Sov (PWTT) yog ib qho tseem ceeb thiab tseem ceeb rau A333 Gri3 Welded pob qij txha. Cov siab muaj kev ntxhov siab ntau tsim tau thaum lub sijhawm vuam yog qhov muaj peev xwm ntawm kev ntxhov siab corrosion tawg thiab tsawg}} kub cgrate; Pwht zoo relieves cov kev ntxhov siab no. Tsis tas li ntawd, ua kom sai heev hauv tshav kub - be} cuam tshuam thaj chaw uas muaj kev cuam tshuam rau kev tawv me (xws li martensite lossis bainite); Pwhal txhim kho thiab ua kom zoo li lub microstructure hauv thaj chaw no. Lub hom phiaj kawg yog rov ua kom lub zog sib txuas tag nrho, tshwj xeeb tshaj yog muaj kev cuam tshuam rau cov khoom siv kub thiab cov khoom siv weld, ua kom muaj kev sib luag.
Yuav ua li cas tuaj yeem ua haujlwm txias (piv txwv li, khoov) ua tau? Cov kev txwv yog dab tsi?
Txias ua haujlwm (piv txwv li dabtsi, txias dabtsi yog) ntawm A333 gr.3 steel yog ua tau, tab sis yuav tsum tau ceev faj. Cov hauj lwm txias qhia ua haujlwm tawv tawv thiab muaj kev cuam tshuam rau cov khoom siv, uas tuaj yeem txo nws cov yas thiab kev cuam tshuam tawv. Yog li ntawd, kev ntxhov siab nyem (SR) Kev kho cua sov yog feem ntau tom qab ua haujlwm txias los ua haujlwm rau cov khoom siv thev naus laus zis. Cov qauv lossis cov engineering cov kev qhia tshwj xeeb feem ntau txwv qhov tsis txaus ntseeg rau kev ua haujlwm txias thaum ua haujlwm txias (piv txwv li cov bend radius tsis tuaj yeem me me). Ua ntej kev ua haujlwm txias, nws yog qhov zoo tshaj plaws los sab laj nrog cov khoom siv khoom thiab xa mus rau cov qauv muaj feem xyuam (piv txwv li B31.3) kom ua raws li kev ua tiav thiab kev nyab xeeb ntawm kev ua tiav.
Cov yam ntxwv ntawm A333 Gr.3 .3 thaum machining (piv txwv li, tig, drilling)?
Vim nws cov ntsiab lus alloy thiab lub zog ntawm A333 Gr.3 yog qhov tsis zoo me ntsis rau qhov ntawd ntawm cov hlau uas muaj txiaj ntsig), tab sis zoo dua li ntawm cov hlau siab. Machining ua nyuaj, chaps nruam uas muaj peev xwm qhwv ib ncig ntawm cov cuab yeej, yog li ib qho cuab yeej nrog tus chipreaker. Txhawm rau kom muaj lub neej zoo ua tiav thiab cov cuab yeej qis, siv qis dua nrawm thiab pub mis qis dua thaum siv cov hlau nplaum, thiab siv cov roj tov rau cua txias rau cua txias thiab lubrication. Xaiv Carbide lossis coated ntxig rau machining tsawg {{{{{{{{{} {}} {}} ecloy {}} alloy}
