Vuam tuaj yeem siv AC lossis DC vuam tshuab.Thaum siv DC vuam tshuab, muaj kev sib txuas zoo thiab rov qab sib txuas.Cov yam ntxwv xws li cov khoom siv hluav taws xob siv, qhov xwm txheej ntawm cov cuab yeej siv, thiab qhov vuam zoo yuav tsum raug txiav txim siab.
Piv nrog rau AC fais fab mov, DC fais fab mov tuaj yeem muab kev ruaj khov arc thiab kev hloov pauv yooj yim.- Thaum lub arc yog ignited, DC arc tuaj yeem tswj kev sib txuas tsis tu ncua.
Thaum siv AC fais fab vuam, vim qhov kev hloov ntawm tam sim no thiab voltage kev taw qhia, thiab lub arc yuav tsum tau tua thiab re-ignited 120 zaug ib ob, lub arc tsis tuaj yeem hlawv tsis tu ncua thiab ruaj khov.
Nyob rau hauv cov ntaub ntawv uas tsis tshua muaj vuam tam sim no, lub DC arc muaj ib tug zoo wetting nyhuv ntawm molten weld hlau thiab muaj peev xwm tswj qhov luaj li cas ntawm weld hlaws, yog li nws yog heev haum rau welding nyias qhov chaw.DC lub hwj chim yog tsim nyog rau cov nyiaj siv ua haujlwm thiab ntsug vuam dua li AC lub zog vim tias DC arc luv dua.
Tab sis qee zaum qhov arc tshuab ntawm DC fais fab mov yog qhov teeb meem tseem ceeb, thiab kev daws teeb meem yog hloov mus rau AC fais fab mov.Rau AC thiab DC dual-lub hom phiaj electrodes tsim rau AC lossis DC fais fab vuam, feem ntau cov ntawv thov vuam ua haujlwm zoo dua hauv DC lub zog.
(1)Ordinary structural steel vuam
Rau cov qauv hlau zoo tib yam electrodes thiab acid electrodes, AC thiab DC tuaj yeem siv tau.Thaum siv DC vuam tshuab rau vuam nyias daim hlau, nws yog qhov zoo dua los siv DC rov qab txuas.
Feem ntau, kev sib txuas ncaj qha tam sim no tuaj yeem siv rau cov phaj tuab tuab kom tau txais kev nkag mus ntau dua.Tau kawg, kev sib txuas ncaj qha tam sim no kuj tseem ua tau, tab sis rau kev rov qab vuam ntawm cov phaj tuab nrog cov grooves, nws tseem zoo dua los siv cov kev sib txuas ncaj qha tam sim no.
Basic electrodes feem ntau siv DC thim rov qab kev twb kev txuas, uas yuav txo tau porosity thiab spatter.
(2)Molten argon arc vuam (MIG vuam)
Hlau arc vuam feem ntau siv DC thim rov qab kev sib txuas, uas tsis yog tsuas yog stabilizes lub arc, tab sis kuj tshem tawm cov oxide zaj duab xis rau ntawm qhov chaw vuam thaum vuam aluminium.
(3) Tungsten argon arc vuam (TIG vuam)
Tungsten argon arc vuam ntawm steel qhov chaw, npib tsib xee thiab nws cov alloys, tooj liab thiab nws cov alloys, tooj liab thiab nws cov alloys tsuas yog txuas nrog ncaj qha tam sim no.Yog vim li cas yog tias DC kev twb kev txuas yog thim rov qab thiab tungsten electrode txuas nrog qhov zoo electrode, qhov kub ntawm qhov zoo electrode yuav siab, qhov kub yuav ntau dua, thiab tungsten electrode yuav yaj sai sai.
Kev yaj nrawm heev, tsis tuaj yeem ua kom lub arc hlawv ruaj khov rau lub sijhawm ntev, thiab cov tungsten molten poob rau hauv lub pas dej molten yuav ua rau tungsten suav nrog thiab txo qhov zoo ntawm cov vuam.
(4)CO2 gas shielded vuam (MAG vuam)
Txhawm rau kom lub arc ruaj khov, qhov zoo tshaj plaws vuam zoo, thiab txo qhov tawg, CO2 roj shielded vuam feem ntau siv DC thim rov qab txuas .Txawm li cas los xij, nyob rau hauv qhov chaw vuam thiab kho vuam vuam ntawm cov hlau cam, nws yog ib qho tsim nyog yuav tsum tau ua kom cov hlau tso tawm thiab txo qis. cua sov ntawm lub workpiece, thiab DC zoo txuas feem ntau yog siv.
Stainless hlau electrode yog nyiam dua DC thim rov qab.Yog tias koj tsis muaj DC vuam tshuab thiab cov kev xav tau zoo tsis siab dhau, koj tuaj yeem siv Chin-Ca hom electrode rau vuam nrog AC vuam tshuab.
(6)Kho welding ntawm cam khwb cia hlau
Kev kho vuam ntawm cam khwb cia hlau feem feem ntau siv DC thim rov qab txoj kev sib txuas.Thaum lub sij hawm welding, lub arc yog ruaj khov, lub spatter yog me me, thiab qhov nkag mus tob yog ntiav, uas tsuas yog ua tau raws li qhov yuav tsum tau ntawm tsawg dilution tus nqi rau cam khwb cia hlau kho welding kom txo tau tawg tsim.
(7) Submerged arc tsis siv neeg vuam
Submerged arc tsis siv neeg vuam tuaj yeem txuas nrog AC lossis DC fais fab mov.Nws raug xaiv raws li cov khoom siv vuam xav tau thiab hom flux.Yog tias siv nickel-manganese tsawg-silicon flux, DC fais fab mov vuam yuav tsum tau siv los xyuas kom meej qhov ruaj khov ntawm arc kom tau txais kev nkag mus ntau dua.
(8) Kev sib piv ntawm AC vuam thiab DC vuam
Piv nrog rau AC fais fab mov, DC fais fab mov tuaj yeem muab kev ruaj khov arc thiab kev hloov pauv yooj yim.- Thaum lub arc yog ignited, DC arc tuaj yeem tswj kev sib txuas tsis tu ncua.
Thaum siv AC fais fab vuam, vim qhov kev hloov ntawm tam sim no thiab voltage kev taw qhia, thiab lub arc yuav tsum tau tua thiab re-ignited 120 zaug ib ob, lub arc tsis tuaj yeem hlawv tsis tu ncua thiab ruaj khov.
Nyob rau hauv cov ntaub ntawv uas tsis tshua muaj vuam tam sim no, lub DC arc muaj ib tug zoo wetting nyhuv ntawm molten weld hlau thiab muaj peev xwm tswj qhov luaj li cas ntawm weld hlaws, yog li nws yog heev haum rau welding nyias qhov chaw.DC lub hwj chim yog tsim nyog rau cov nyiaj siv ua haujlwm thiab ntsug vuam dua li AC lub zog vim tias DC arc luv dua.
Tab sis qee zaum qhov arc tshuab ntawm DC fais fab mov yog qhov teeb meem tseem ceeb, thiab kev daws teeb meem yog hloov mus rau AC fais fab mov.Rau AC thiab DC dual-lub hom phiaj electrodes tsim rau AC lossis DC fais fab vuam, feem ntau cov kev siv vuam ua haujlwm zoo dua nyob rau hauv DC fais fab xwm txheej.
Hauv phau ntawv arc vuam, AC vuam tshuab thiab qee cov khoom siv ntxiv yog pheej yig, thiab tuaj yeem zam qhov teeb meem ntawm arc tshuab quab yuam kom ntau li ntau tau.Tab sis ntxiv rau cov khoom siv qis dua, vuam nrog AC lub zog tsis zoo li DC lub zog.
Arc welding fais fab mov (CC) nrog cov yam ntxwv poob qis yog qhov zoo tshaj plaws rau phau ntawv arc vuam.Qhov kev hloov ntawm qhov hluav taws xob sib raug rau qhov kev hloov pauv tam sim no qhia tau tias maj mam txo tam sim no raws li qhov ntev arc nce.Cov yam ntxwv no txwv qhov siab tshaj plaws arc tam sim no txawm tias tus welder tswj qhov loj ntawm lub pas dej molten.
Qhov kev hloov pauv tsis tu ncua ntawm qhov ntev ntawm arc yog qhov tsis tuaj yeem zam tau vim tias tus welder txav cov electrode raws qhov vuam, thiab cov yam ntxwv ntawm qhov chaw vuam arc vuam lub zog ua kom muaj kev ruaj ntseg arc thaum cov kev hloov no.
Post lub sij hawm: May-25-2023