Cov txheej txheem submerged arc vuam yog qhov kev xaiv zoo tshaj plaws rau kev siv tseem ceeb hauv cov kav dej, cov hlab ntsha thiab cov tso tsheb hlau luam, kev tsim tsheb ciav hlau thiab kev tsim kho loj. Nws muaj cov qauv yooj yim tshaj plaws ntawm ib lub xaim, ob chav xaim qauv, tandem ob chav xaim qauv thiab ntau cov qauv hlau.
Lub submerged arc vuam txheej txheem tuaj yeem muaj txiaj ntsig zoo rau cov neeg siv khoom siv hauv ntau qhov kev siv vuam, los ntawm kev ua kom muaj txiaj ntsig zoo rau kev txhim kho qhov chaw ua haujlwm kom ntseeg tau zoo ib yam thiab ntau dua. Hlau fabrication nroj tsuag uas tab tom xav txog kev hloov pauv rau submerged arc vuam txheej txheem yuav tsum tau xav txog ntau yam txiaj ntsig uas tuaj yeem tau txais los ntawm cov txheej txheem no.
Submerged arc vuam Basics
Cov txheej txheem submerged arc vuam yog qhov yuav tsum tau ua rau cov dej num hnyav ua haujlwm tsim nyog rau cov kav dej, cov hlab ntsha thiab cov tso tsheb hlau luam, kev tsim kho tsheb, kev tsim kho hnyav / khawb. Qhov zoo tshaj plaws rau kev lag luam uas xav tau cov khoom lag luam siab, tshwj xeeb tshaj yog cov ntaub ntawv tuab heev, muaj ntau yam txiaj ntsig tuaj yeem tau txais los ntawm cov txheej txheem submerged arc vuam.
Nws qhov kev tso nyiaj siab thiab kev mus ncig ceev tuaj yeem ua rau muaj kev cuam tshuam loj rau cov neeg ua haujlwm tsim khoom, kev ua haujlwm zoo thiab cov nqi tsim khoom, uas yog ib qho ntawm cov txiaj ntsig tseem ceeb ntawm submerged arc vuam txheej txheem.
Lwm cov txiaj ntsig suav nrog cov khoom siv vuam zoo heev thiab cov khoom siv kho tshuab, qhov pom qhov qis qis thiab qis vuam pa taws, txhim kho kev nplij siab hauv qhov chaw ua haujlwm, thiab zoo weld zoo thiab ntiv taw kab.
Submerged arc vuam yog ib txoj hlua pub mis uas siv granular flux cais cov arc ntawm huab cua. Raws li lub npe qhia, lub arc yog faus rau hauv lub flux, uas txhais tau hais tias thaum lub parameters teem, nrog rau tom ntej outflow ntawm ib txheej ntawm flux, lub arc yog pom. ploj lawm.
Lub vuam hlau yog pub tsis tu ncua los ntawm lub teeb uas txav raws qhov vuam. Lub arc cua sov melts ib feem ntawm vuam hlau, ib feem ntawm cov flux thiab lub hauv paus hlau los ua ib tug molten pas dej ua ke, uas condenses rau ib tug weld npog nrog ib tug txheej ntawm slag.
Qhov tuab ntawm cov khoom siv vuam yog nyob rau hauv thaj tsam ntawm 1/16"-3/4", thiab nws tuaj yeem dhau 100% nkag mus vuam los ntawm ib qho dhau los. Xaiv txoj cai ua ke ntawm cov hlau thiab flux.
Kev xaiv ntawm Flux thiab Hlau
Xaiv txoj cai flux thiab xaim rau ib qho tshwj xeeb submerged arc vuam txheej txheem yog qhov tseem ceeb rau kev ua tiav cov txiaj ntsig zoo tshaj plaws nrog cov txheej txheem ntawd. Thaum lub submerged arc vuam txheej txheem ib leeg yog qhov ua tau zoo, kev tsim khoom thiab kev ua tau zoo tuaj yeem txhim kho raws li cov xaim thiab flux siv.
Flux tsis tsuas yog tiv thaiv lub pas dej ua ke, tab sis kuj tseem txhawb nqa kev txhim kho ntawm cov khoom siv kho tshuab thiab kev tsim khoom ntawm cov vuam. Flux formulation yog ib qho kev cuam tshuam loj ntawm cov yam ntxwv no, cuam tshuam rau lub peev xwm nqa tam sim no thiab tso tawm slag. Lub peev xwm nqa tam sim no txhais tau hais tias qhov ua tau zoo tshaj plaws ntawm kev tso nyiaj thiab cov khoom siv vuam zoo tuaj yeem tau txais.
Lub slag tso tawm ntawm ib qho flux cuam tshuam rau kev xaiv flux, vim qee qhov fluxes tsim nyog rau qee qhov qauv tsim dua li lwm tus.
Flux xaiv kev xaiv rau submerged arc vuam muaj xws li active thiab nruab nrab hom vuam. Ib qho tseem ceeb sib txawv yog tias cov active fluxes hloov cov chemistry ntawm weld, thaum nruab nrab fluxes tsis.
Active flux yog yam ntxwv los ntawm muaj silicon thiab manganese. Cov ntsiab lus no pab tswj lub zog tensile ntawm cov khoom siv hluav taws xob ntau dua, pab cov welds nyob twj ywm du thiab du ntawm kev mus los ntau dua thiab muab cov slag tso tawm zoo.
Zuag qhia tag nrho, activated flux tuaj yeem pab txo qhov kev pheej hmoo ntawm cov khoom siv tsis zoo, nrog rau cov khoom kim heev tom qab ntxuav thiab rov ua haujlwm dua.
Tab sis nco ntsoov tias active flux feem ntau yog qhov zoo tshaj plaws rau ib leeg lossis ob zaug dhau los. Qhov nruab nrab fluxes zoo dua rau qhov loj, ntau dhau welds vim lawv pab kom tsis txhob tsim cov nkig, tawg-rhiab welds.
Muaj ntau txoj kev xaiv xaim rau submerged arc vuam, txhua tus muaj qhov zoo thiab qhov tsis zoo. Qee cov xov hlau yog tsim los rau vuam ntawm cov khoom siv hluav taws xob ntau dua, thaum lwm tus yog tsim tshwj xeeb kom muaj cov hlau nplaum uas pab cov flux hauv vuam tu.
Nco ntsoov tias cov khoom siv hluav taws xob ntawm cov hlau thiab cov hluav taws xob hluav taws xob sib cuam tshuam cuam tshuam rau cov khoom siv hluav taws xob ntawm cov vuam. Cov khoom tsim tau kuj tuaj yeem txhim kho tau zoo los ntawm kev xaiv hlau muab tub lim.
Piv txwv li, siv cov hlau-cored hlau nrog submerged arc vuam txheej txheem tuaj yeem ua rau kom muaj txiaj ntsig zoo ntawm 15% mus rau 30% piv rau kev siv cov khoom siv hlau, thaum tseem muab qhov dav dav, qhov tob tob tob.
Vim nws txoj kev mus txawv teb chaws siab, hlau-cored hlau kuj txo cov cua sov tawm tswv yim kom txo tau qhov kev pheej hmoo ntawm weld distortion thiab hlawv. Thaum muaj kev tsis ntseeg, sab laj nrog cov chaw tsim khoom siv hlau los txiav txim siab qhov sib txuas ntawm cov hlau thiab flux yog qhov zoo tshaj plaws rau ib daim ntawv thov.
