Xav paub ntau npaum li cas los xaiv txoj cai welding rods rau daim ntawv thov?
Tau txais cov lus teb rau cov lus nug nquag nug txog stick electrode.
Txawm hais tias koj yog DIYer uas tuav welds ob peb zaug hauv ib xyoos lossis ib tus kws tshaj lij welds uas welds txhua hnub, ib yam yog qhov tseeb: welding yuav tsum muaj ntau yam txuj ci.Nws kuj yuav tsum tau muaj qee qhov kev paub txog cov nplaum electrodes (tseem hu ua welding rods).
Vim tias cov kev hloov pauv xws li kev khaws cia, txoj kab uas hla electrode thiab flux muaj pes tsawg leeg txhua tus ua rau cov pas nrig xaiv thiab kev ua tau zoo, ua rau koj tus kheej nrog qee qhov kev paub yooj yim tuaj yeem pab koj txo qhov tsis meej pem thiab ua kom zoo dua rau kev ua tiav ntawm cov pas nrig.
1. Dab tsi yog cov nplaum electrodes feem ntau?
Pua pua, yog tias tsis yog ntau txhiab, ntawm cov nplaum electrodes muaj nyob, tab sis qhov nrov tshaj plaws poob rau hauv American Welding Society (AWS) A5.1 Specification for Carbon Steel Electrodes for Shielded Metal Arc Welding.Cov no suav nrog E6010, E6011, E6012, E6013, E7014, E7024 thiab E7018 electrodes.
2. AWS stick electrode classifications txhais li cas?
Txhawm rau pab txheeb xyuas cov nplaum electrodes, AWS siv cov txheej txheem kev ua haujlwm zoo.Kev faib tawm siv cov lej thiab cov ntawv luam tawm ntawm ob sab ntawm cov nplaum electrodes, thiab txhua tus sawv cev rau cov khoom tshwj xeeb electrode.
Rau cov hlau electrodes me me tau hais los saum no, ntawm no yog li cas AWS system ua haujlwm:
● Tsab ntawv "E" qhia txog ib qho electrode.
● Thawj ob tus lej sawv cev rau qhov tshwm sim ntawm qhov vuam qhov tsawg kawg nkaus tensile lub zog, ntsuas hauv phaus ib square inch (psi).Piv txwv li, tus naj npawb 70 hauv E7018 electrode qhia tias electrode yuav tsim cov hlaws dai nrog lub zog tensile yam tsawg kawg nkaus ntawm 70,000 psi.
● Tus lej thib peb sawv cev rau txoj haujlwm vuam uas siv tau cov electrode.Piv txwv li, 1 txhais tau hais tias cov electrode tuaj yeem siv tau rau txhua txoj haujlwm thiab 2 txhais tau tias nws tuaj yeem siv rau ntawm lub tiaj thiab kab rov tav fillet welds nkaus xwb.
● Tus lej thib plaub sawv cev rau hom txheej txheej thiab hom vuam tam sim no (AC, DC lossis ob qho tib si) uas tuaj yeem siv nrog cov electrode.
3. Dab tsi yog qhov txawv ntawm E6010, E6011, E6012 thiab E6013 electrodes thiab thaum twg lawv yuav tsum tau siv?
● E6010 electrodes tsuas yog siv nrog cov khoom siv hluav taws xob ncaj qha (DC) xwb.Lawv xa cov nkag mus tob thiab muaj peev xwm khawb los ntawm xeb, roj, xim thiab av.Ntau tus kws paub txog cov yeeb nkab welders siv tag nrho txoj hauj lwm electrodes rau hauv paus vuam hla ntawm cov yeeb nkab.Txawm li cas los xij, E6010 electrodes muaj qhov nruj nruj heev, uas tuaj yeem ua rau lawv nyuaj rau cov neeg siv khoom siv tshiab.
● E6011 electrodes kuj tseem siv tau rau tag nrho txoj hauj lwm vuam siv lub alternating tam sim no (AC) vuam fais fab.Zoo li E6010 electrodes, E6011 electrodes tsim ib tug tob, nkag mus rau hauv arc uas txiav los ntawm corroded los yog tsis huv hlau.Ntau tus kws tsim khoom siv hluav taws xob xaiv E6011 electrodes rau kev tu thiab kho ua haujlwm thaum lub zog DC tsis muaj.
● E6012 electrodes ua haujlwm zoo hauv cov ntawv thov uas yuav tsum muaj qhov sib txawv ntawm ob lub pob qij txha.Ntau tus kws tshaj lij welders kuj xaiv E6012 electrodes rau high-speed, high-tam sim no fillet welds nyob rau hauv txoj hauj lwm kab rov tav, tab sis cov electrodes yuav tsim ib tug ntiav nkag profile thiab ntom slag uas yuav tsum tau ntxiv tom qab vuam tu.
● E6013 electrodes tsim ib tug mos arc nrog tsawg spatter, muab kev nkag mus rau nruab nrab thiab muaj ib tug yooj yim-tshem slag.Cov electrodes yuav tsum tsuas yog siv los ua kom huv si, cov ntawv hlau tshiab.
4. Dab tsi yog qhov txawv ntawm E7014, E7018 thiab E7024 electrodes thiab thaum twg lawv yuav tsum tau siv?
● E7014 electrodes tsim txog tib qho kev sib koom ua ke raws li E6012 electrodes thiab tsim los siv rau cov pa roj carbon thiab cov hlau tsis tshua muaj hlau.E7014 electrodes muaj cov hmoov hlau ntau dua, uas ua rau kom nce qhov tso nyiaj.Lawv tuaj yeem siv tau ntawm cov amperages ntau dua li E6012 electrodes.
● E7018 electrodes muaj ib tug tuab flux nrog siab hmoov cov ntsiab lus thiab yog ib tug ntawm cov yooj yim electrodes siv.Cov electrodes no tsim ib tug du, ntsiag to arc nrog tsawg spatter thiab nruab nrab arc nkag.Ntau tus neeg siv vuam siv E7018 electrodes los vuam tuab hlau xws li cov qauv hlau.E7018 electrodes kuj tsim cov welds muaj zog nrog cov khoom muaj zog (txawm tias nyob rau hauv huab cua txias) thiab tuaj yeem siv rau carbon steel, high-carbon, low-alloy lossis high-strength steel base metals.
● E7024 electrodes muaj cov hmoov hlau ntau uas pab ua kom cov nyiaj tso tawm.Ntau tus neeg siv khoom siv E7024 electrodes rau kev kub ceev kab rov tav lossis tiaj tus fillet welds.Cov electrodes no ua tau zoo ntawm cov phaj hlau uas tsawg kawg yog 1/4-inch tuab.Lawv kuj tuaj yeem siv rau cov hlau uas ntsuas tshaj 1/2-nti tuab.
5. Kuv yuav xaiv tus pas electrode li cas?
Ua ntej, xaiv ib tug stick electrode uas phim lub zog zog thiab muaj pes tsawg leeg ntawm lub hauv paus hlau.Piv txwv li, thaum ua haujlwm ntawm cov hlau me me, feem ntau E60 lossis E70 electrode yuav ua haujlwm.
Tom ntej no, phim cov electrode hom rau vuam txoj hauj lwm thiab xav txog cov khoom siv hluav taws xob muaj.Nco ntsoov, qee cov electrodes tsuas yog siv nrog DC lossis AC, thaum lwm cov electrodes tuaj yeem siv nrog DC thiab AC.
Txheeb xyuas qhov sib koom ua ke tsim thiab haum thiab xaiv cov khoom siv hluav taws xob uas yuav muab cov yam ntxwv zoo tshaj plaws (kev khawb, nruab nrab lossis lub teeb).Thaum ua haujlwm ntawm kev sib koom ua ke nrog nruj nruj los yog ib qho uas tsis yog beveled, electrodes xws li E6010 lossis E6011 yuav muab khawb arcs kom muaj kev nkag mus txaus.Rau cov ntaub ntawv nyias lossis cov pob qij txha uas muaj cov hauv paus dav, xaiv cov khoom siv hluav taws xob nrog lub teeb lossis mos arc xws li E6013.
Txhawm rau kom tsis txhob weld tawg ntawm cov khoom tuab, hnyav thiab / lossis cov qauv sib koom ua ke, xaiv cov khoom siv hluav taws xob uas muaj qhov siab tshaj plaws.Kuj xav txog cov kev pabcuam uas cov khoom yuav ntsib thiab cov kev qhia tshwj xeeb uas nws yuav tsum tau ua.Nws puas yuav siv nyob rau hauv qhov kub thiab txias, siab kub los yog poob siab-loading ib puag ncig?Rau cov ntawv thov no, qis hydrogen E7018 electrode ua haujlwm zoo.
Kuj xav txog qhov kev ua haujlwm ntau lawm.Thaum ua haujlwm nyob rau hauv txoj hauj lwm tiaj tus, cov electrodes uas muaj cov hmoov hlau loj, xws li E7014 lossis E7024, muab cov nqi tso nyiaj ntau dua.
Rau cov ntawv thov tseem ceeb, nco ntsoov xyuas qhov vuam specification thiab cov txheej txheem rau hom electrode.
6. Dab tsi ua haujlwm ntawm qhov flux nyob ib puag ncig lub pas electrode pab?
Tag nrho cov nplaum electrodes muaj ib tug pas nrig ncig los ntawm cov txheej hu ua flux, uas ua haujlwm rau ntau lub hom phiaj tseem ceeb.Nws yog qhov flux, los yog npog, ntawm cov electrode uas dictates qhov twg thiab yuav siv electrode li cas.
Thaum ib qho arc raug ntaus, cov flux hlawv thiab ua rau cov tshuaj lom neeg ua haujlwm nyuaj.Raws li cov khoom xyaw flux hlawv nyob rau hauv lub vuam arc, lawv tso cov roj shielding los tiv thaiv lub pas dej molten weld los ntawm atmospheric impurities.Thaum lub pas dej weld txias, cov flux tsim slag los tiv thaiv cov hlau los ntawm oxidation thiab tiv thaiv porosity nyob rau hauv weld hlaws.
Flux kuj muaj cov ntsiab lus ionizing uas ua rau lub arc ruaj khov (tshwj xeeb tshaj yog thaum vuam nrog lub zog AC), nrog rau cov hlau uas muab cov vuam nws cov ductility thiab tensile lub zog.
Qee cov electrodes siv flux nrog ntau dua ntawm cov hmoov hlau los pab nce cov nqi tso nyiaj, thaum lwm tus muaj cov deoxidizers ntxiv uas ua cov tshuaj ntxuav thiab tuaj yeem nkag mus rau cov khoom ua haujlwm tsis zoo lossis qias neeg lossis zeb nplai.
7. Thaum twg yuav tsum tau siv lub siab deposition stick electrode?
High deposition rate electrodes tuaj yeem pab ua tiav txoj haujlwm sai dua, tab sis cov electrodes muaj kev txwv.Cov hmoov hlau ntxiv nyob rau hauv cov electrodes no ua rau lub pas dej welded dej ntau dua, txhais tau hais tias cov electrodes siab tsis tuaj yeem siv rau hauv daim ntawv thov tawm ntawm txoj hauj lwm.
Lawv kuj tsis tuaj yeem siv rau cov ntawv thov tseem ceeb lossis kev cai lij choj, xws li lub nkoj siab lossis cov khoom siv boiler, qhov twg cov hlaws hlaws muaj kev ntxhov siab ntau.
High deposition electrodes yog ib qho kev xaiv zoo tshaj plaws rau kev siv tsis tseem ceeb, xws li vuam ib qho yooj yim kua tank los yog ob daim ntawm cov hlau uas tsis yog qauv ua ke.
8. Dab tsi yog txoj hauv kev zoo los khaws thiab rov qhuav cov nplaum electrodes?
Ib puag ncig cua sov, tsis tshua muaj av noo yog qhov chaw cia zoo tshaj plaws rau cov electrodes stick.Piv txwv li, ntau cov hlau me me, qis hydrogen E7018 electrodes yuav tsum tau khaws cia ntawm qhov kub ntawm 250- thiab 300-degrees Fahrenheit.
Feem ntau, reconditioning kub rau electrodes yog siab tshaj qhov kub cia, uas pab tshem tawm cov dej noo ntau dhau.Txhawm rau kho qhov tsis tshua muaj hydrogen E7018 electrodes tau tham saum toj no, qhov chaw kho kom rov zoo li ntawm 500 txog 800 degrees F rau ib mus rau ob teev.
Qee cov electrodes, zoo li E6011, tsuas yog yuav tsum tau muab cia qhuav ntawm chav tsev kub, uas txhais tau tias cov av noo tsis tshaj 70 feem pua ntawm qhov kub ntawm 40 thiab 120 degrees F.
Rau qhov tshwj xeeb cia thiab rov kho lub sijhawm thiab qhov kub thiab txias, nco ntsoov xa mus rau cov chaw tsim khoom cov lus pom zoo.
Post lub sij hawm: Dec-23-2022