Ntawm cov feem ntau siv thiab ua tau zoo tsis siv neeg vuam txheej txheem nyob rau hauv niaj hnub hnyav kev lag luam thiab steel yeeb nkab raug, ib tug yogsubmerged arc vuam(SAW). Raws li ib tug paub tab technology, SAW nta xws li cov yam ntxwv xws li submerged arc, tiv thaiv flux, tob tob, ruaj khov vuam zoo, thiab tsawg spatter. Tsis zoo li MIG thiab TIG (qhib arc) vuam txoj kev, tag nrho cov arc thiab molten pas dej ua ke ntawm submerged arc vuam yog tag nrho them thiab tiv thaiv los ntawm flux, yog li cais thaj chaw vuam los ntawm huab cua thiab zam oxidation tsis xws luag. Txij li thaum muaj kev lag luam pib, submerged arc vuam tau dhau los ua cov txheej txheem vuam rau cov kav hlau txuas, tuab - cov txheej txheem steel, cov hlab ntsha siab, kev tsim boiler, kev tsim khoom, thiab cov khoom siv loj. Vim nws tsim nyog rau cov phaj tuab tuab, muaj peev xwm tam sim no, thiab yooj yim ntawm automation, submerged arc vuam tau tuav txoj haujlwm tsis tuaj yeem hloov pauv hauv kev lag luam hnyav.
Lub Ntsiab Lus Txhais thiab Txoj Cai Ua Haujlwm
Submerged arc vuam yog ib qho tsis siv neeg lossis ib nrab - tsis siv neeg arc vuam txheej txheem uas siv cov khoom siv hlau ua cov khoom muab tub lim thiabfluxraws li qhov nruab nrab tiv thaiv. Lub ntsiab feature ntawm cov txheej txheem no yog thaum lub sij hawm vuam txheej txheem, lub arc yog them los ntawm cov flux txheej, thiab tsis qhib nplaim taws yuav pom. Tag nrho cov tshuaj tiv thaiv metallurgical ntawm vuam yog ua tiav nyob rau hauv lub kaw slag tiv thaiv ib puag ncig.
Nws txoj haujlwm ua haujlwm tuaj yeem muab faib ua plaub theem: arc ignition, tshav kub melting, metallurgical cov tshuaj tiv thaiv, thiab kev tiv thaiv slag tsim. Thaum lub tshuab vuam pib, qhov luv luv ntawm cov vuam hlau thiab cov khoom ua haujlwm ua rau lub sijhawm tam sim no, yog li igniting lub arc. Nyob rau tib lub sijhawm, qhov siab -kub arc kub melts cov flux nyob ib puag ncig, vuam hlau, thiab cov khoom siv hauv paus. Lub melted flux tsim ib viscous thiab ntom kua slag txheej uas tuaj yeem npog tag nrho qhov siab -kub pas dej molten. Cov txheej slag no tuaj yeem cais cov pa oxygen, nitrogen, thiab dej vapor hauv huab cua, tiv thaiv cov pa phem los ntawm kev nkag mus rau hauv lub vuam seam. Nyob rau tib lub sijhawm, cov txheej txheem ntawm cov txheej txheem metallurgical tshwm sim ntawm cov molten slag thiab cov hlau molten, xws li deoxidation, desulfurization, thiab dephosphorization, yog li purifying lub microstructure ntawm weld seam thiab txhim kho cov khoom siv ntawm cov vuam sib txuas. Tom qab txias, cov kua slag solidifies rau hauv ib lub plhaub tawv ntawm qhov chaw weld, uas yog ib qho yooj yim rau tshem tawm thiab tsim ib tug du thiab uniform weld.
Cov khoom siv tseem ceeb thiab cov khoom siv ntawm SAW system
Ua tiav submerged arc vuam system muaj cov khoom siv vuam, vuam hlau thiab cov flux tshwj xeeb.
1. Cov khoom siv vuam
Cov cuab yeej tseem ceeb feem ntau muaj xws li kev siv hluav taws xob tsis siv neeg vuam, xaim feeder, vuam trolley lossis mobile gantry system, flux mov thiab rov qab ntaus ntawv. Lub vuam fais fab muab kev ruaj ntseg tam sim no thiab qhov hluav taws xob los xyuas kom meej qhov txuas txuas ntxiv thiab ruaj khov ntawm cov arc. Lub tshuab xaim tsis siv neeg tuaj yeem tswj xyuas cov xaim pub ceev ceev thiab phim nws nrog lub vuam txav ceev kom tsis txhob cuam tshuam arc thiab lub pas dej tsis ruaj khov. Txoj kev taug kev trolley tsav lub vuam phom kom txav ntawm qhov nrawm nrawm, ua kom ntseeg tau qhov sib xws ntawm vuam dav thiab qhov tob tob. Tsis tas li ntawd, lub tshuab tsis siv neeg flux tuaj yeem ua tiav qhov kev sib kis tsis siv neeg thiab rov qab los ntawm flux, tsis tsuas yog ua kom muaj kev tiv thaiv txuas ntxiv thaum lub sijhawm vuam, tab sis kuj txhim kho kev siv cov khoom siv thiab yog li txo cov nqi tsim khoom.
2. Vuam hlau thiab flux
Submerged arc welding cia siab rau kev sib xyaw ua ke ntawm cov vuam hlau thiab cov flux kom ua tiav kev ua kom zoo ntawm metallurgical. Lub vuam hlau muab cov hlau nplaum thiab cov hlau alloy, thaum lub flux ua haujlwm tiv thaiv, deoxidizing, thiab impurity tshem tawm tus neeg sawv cev. Cov hlau sib txawv, xws li cov pa roj carbon steel, qis- alloy siab- lub zog steel, thiab cov yeeb nkab steel, yuav tsum muaj cov khoom nruab nrab, acidic, lossis alkaline fluxes. Ntawm lawv, alkaline fluxes muaj peev xwm tshem tawm impurity zoo heev, uas tuaj yeem txhim kho qhov qis - kub thiab tawg tsis kam ntawm cov vuam, thiab tsim nyog rau siab - cov kav dej thiab lub siab vuam; acidic fluxes muaj cov txheej txheem kev ua tau zoo, ruaj khov arc, thiab zoo nkauj weld tsim, thiab feem ntau yog siv rau vuam ntawm cov qauv hlau zoo tib yam.
Ua tiav cov txheej txheem thev naus laus zis ntawm Submerged Arc Vuam
1. Pre-weld Preparation
Ua ntej- kev kho weld yog ib kauj ruam tseem ceeb hauv kev ua kom cov vuam zoo. Ua ntej, cov khoom nto thiab qhov chaw vuam yuav tsum tau ntxuav kom huv si, tshem tawm xeb, oxide nplai, roj stains, noo noo, thiab lwm yam impurities los tiv thaiv qhov tsis xws luag xws li pores, slag inclusions, thiab tawg los ntawm impurities. Qhov thib ob, cov flux yuav tsum tau qhuav ntawm qhov kub tshwj xeeb kom tshem tawm cov dej vapor sab hauv, yog li txo cov ntsiab lus hydrogen nyob rau hauv weld seam thiab tsis txhob hydrogen- ua kom txias tawg. Tsis tas li ntawd, tus neeg teb xov tooj yuav tsum tau kho qhov sib txawv ntawm qhov sib dhos thiab vuam lub kaum sab xis raws li cov tuab ntawm daim ntawv thiab cov qauv vuam kom ntseeg tau tias cov txheej txheem nkag mus tau zoo thiab fusion zoo.
2. Parameter nqis thiab sim Vuam
Ua ntej txheej txheem vuam txheej txheem, cov neeg ua haujlwm yuav tsum tau teeb tsa cov txheej txheem tseem ceeb, suav nrog cov vuam tam sim no, qhov hluav taws xob, qhov nrawm nrawm, thiab xaim ntev, thiab lwm yam. Qhov tam sim no txiav txim siab cov cua kub nkag thiab qhov tob ntawm qhov vuam; qhov voltage tswj qhov dav ntawm weld seam thiab cov tsos ntawm weld hlaws; lub arc txav ceev cuam tshuam rau vuam efficiency thiab qhov zoo ntawm fusion. Yog tias qhov ntsuas tsis sib haum zoo, nws yuav ua rau qhov tob nkag tsis txaus, hlawv - dhau, tsis tiav fusion, lossis tsis sib xws weld tsim. Txhawm rau kom muaj kev ruaj ntseg ntawm cov kev txwv thiab qhov tsim nyog weld kev ua tau zoo nyob rau hauv loj - teev ntau lawm, kev sim vuam yuav tsum tau ua.
3. kev vuam thiab kev tiv thaiv flux
Thaum lub sij hawm welding txheej txheem, cov khoom siv flux sib npaug sib npaug ntawm cov dej ntws ntawm cov vuam seam, tsim kom muaj cov tuab txaus ntawm cov txheej txheem flux. Lub vuam hlau tsis tu ncua pub rau hauv, thiab hluav taws xob arc kub hnyiab hauv qab txheej txheej flux. Qhov siab -kub hluav taws xob arc melts cov khoom siv hauv paus thiab cov hlau vuam, ua rau lub pas dej molten. Nyob rau tib lub sijhawm, tom qab cov flux melts, ib txheej tiv thaiv slag yog tsim, cais cov huab cua thiab ua tiav metallurgical purification. Lub laub vuam txav mus rau tom ntej ntawm qhov nrawm nrawm kom ua tiav thiab ntev -vuam nrug. Rau kauv welded kav thiab tuab -walled steel qauv, ob -sided submerged arc vuam feem ntau yog siv. Sab hauv weld yog ua ntej, ua raws li cov txheej txheem weld, kom ua tiav kev nkag mus thiab cov qauv ntom ntom ntom.
4. Tshaj tawm - vuam kev kho thiab tshuaj xyuas
Tom qab vuam tiav lawm, tos kom txias txias thiab tshem tawm lub plhaub slag nto. Weld nto yog du thiab tiaj tus, nrog zoo sib sau zoo. Rau siab- cov khoom zoo xws li cov raj xa dej thiab cov hlab ntsha siab, tom qab-weld tsis yog- kev kuaj kev puas tsuaj xws li kev kuaj ultrasonic thiab X-ray flaw detection yuav tsum tau kuaj xyuas cov kab nrib pleb, slag inclusions, thiab tsis tiav fusion defects. Nyob rau tib lub sijhawm, kev ntsuas cov cuab yeej cuab tam xws li kev ntsuas tensile thiab kev ntsuam xyuas qhov cuam tshuam yuav tsum tau ua los xyuas seb qhov vuam lub zog thiab lub zog ua tau raws li cov qauv kev lag luam.
Core technology zoo
Nyob rau hauv cov txheej txheem ntau lawm, submerged arc vuam muaj irreplaceable technical zoo nyob rau hauv tuab phaj vuam thiab ntev weld seam welding. Ua ntej, qhov kev tiv thaiv flux tuaj yeem cais tawm tag nrho cov huab cua, uas ua rau muaj cov roj tsawg heev hauv cov vuam seam thiab cov qauv ntom ntom nrog cov khoom siv zoo heev. Qhov thib ob, submerged arc vuam tuaj yeem tiv taus cov dej ntws siab thiab ua tiav cov cua kub loj, muaj peev xwm nkag tau zoo, thiab tshwj xeeb tshaj yog haum rau cov phaj tuab tuab uas tsis tuaj yeem ua tiav los ntawm cov txheej txheem vuam zoo tib yam. Tsis tas li ntawd, txoj kev vuam tsis siv neeg no muaj kev ua haujlwm siab ntau lawm, cov txheej txheem vuam ruaj khov, tsis muaj qhov tsis xws luag, thiab kev cia siab me ntsis ntawm tib neeg kev ua haujlwm. Plaub, cov pa phem los ntawm vuam cov pa luam yeeb tau txo qis, txhim kho ntawm - qhov chaw ua haujlwm thiab kev nyab xeeb. Thib tsib, lub weld seam yog du thiab zoo ib yam, yuav luag tsis muaj spatter, txo qhov kev ua haujlwm ntawm kev sib tsoo tom ntej thiab kev ua haujlwm zoo, thiab txhim kho kev tsim khoom.
Kev txwv
Txawm hais tias submerged arc vuam muaj qhov zoo tseem ceeb, nws kuj muaj qee yam kev txwv. Vim tias qhov kev xav tau ntawm cov dej ntws hauv cov txheej txheem vuam, submerged arc vuam tsuas yog tsim rau cov vuam vuam thiab kab rov tav vuam, thiab tsis tuaj yeem ua tiav tag nrho - txoj hauj lwm vuam xws li ntsug vuam thiab nyiaj siv ua haujlwm vuam. Yog li ntawd, muaj kev txwv txoj hauj lwm. Tsis tas li ntawd, submerged arc vuam tsis haum rau nyias phaj vuam vim tias cov cua sov nkag ntawm submerged arc vuam loj dhau, uas ua rau cov phaj deformation lossis hlawv - dhau. Nyob rau tib lub sijhawm, vim qhov loj ntawm cov khoom siv vuam, nws tsis haum rau kev ua haujlwm tsis zoo thiab tsis xwm yeem zoo li me me- tej daim nrog rau cov xwm txheej ntawm kev tsim kho mobile. Hauv kev tsim khoom tiag tiag, kev tswj cov txheej txheem tseem ceeb yuav tsum tau ua: nruj me ntsis tswj qhov kub thiab txias ntawm cov flux kom tiv thaiv hydrogen-induced tawg; precisely phim lub tam sim no thiab voltage kom tsis txhob electrode tsis nkag los yog overheating; xyuas kom muaj kev tiv thaiv zoo ntawm cov flux kom tsis txhob muaj cua nkag; tsim nyog tswj qhov vuam ceev kom stabilize lub weld tsim.
Kev siv tseem ceeb hauv kev lag luam
Arc vuam yog siv dav hauv kev lag luam hnyav kev lag luam uas yuav tsum muaj cov qauv zoo thiab kev ua haujlwm zoo.
1. Hauv kev lag luam steel yeeb nkab, nws yog cov txheej txheem vuam tshwj xeeb rau cov kav dej welded thiab loj - txoj kab uas hla longitudinal seam welded kav, thiab yog dav siv nyob rau hauv ntev - cov roj thiab roj kav, kav dej hauv nroog, thiab cua fais fab engineering pipelines.
2. Hauv kev lag luam steel qauv hnyav, submerged arc vuam thev naus laus zis yog siv rau choj hlau daim hlau, lub tsev thauj khoom-cov kabmob, thiab chaw nres nkoj machinery manufacturing.
3. Nyob rau hauv lub siab lub nkoj thiab boiler manufacturing, lub tshuab no yog siv rau tuab - lub tog raj kheej welding los xyuas kom meej siab - siab kam rau ua thiab huab cua nruj.
4. Nyob rau hauv shipbuilding thiab marine engineering teb, submerged arc vuam tuaj yeem ua kom muaj kev ruaj ntseg thiab corrosion tsis kam ntawm nkoj lub cev steel daim hlau thiab cov khoom siv sab nrauv.
Nrog rau kev txhim kho txuas ntxiv ntawm automation thiab kev tsim khoom ntse, submerged arc vuam thev naus laus zis yog maj mam hloov mus rau qhov kev hloov pauv ntawm kev txawj ntse, kev sib koom tes neeg hlau, thiab kev siv vuam zoo, ntxiv dag zog rau kev tsim khoom lag luam.
Submerged arc welding yog qhov ua tau zoo, siab - zoo thiab cov txheej txheem vuam zoo heev uas ua tiav vuam los ntawm kev tiv thaiv flux thiab metallurgical purification. Tsis zoo li cov kab arc vuam tsoos, submerged arc vuam siv granular flux rau kev tiv thaiv, ua kom kaw vuam, zoo tshem tawm cov porosity tsis xws luag thiab purifying cov hlau weld, ua rau cov khoom siv zoo dua. Nws muaj cov txiaj ntsig tseem ceeb xws li kev nkag mus tob, txheej txheem ruaj khov, zoo nkauj weld tsos, thiab tus nqi qis. Nws yog tshwj xeeb tshaj yog haum rau cov phaj tuab, welds ntev, thiab loj - nplai kev lag luam.
Txawm hais tias nws muaj qee qhov kev txwv hauv vuam txoj haujlwm thiab nyias phaj vuam, nws tseem tuav txoj haujlwm tseem ceeb hauv kev lag luam hnyav, kev tsim cov kav dej, kev tsim cov hlab ntsha siab, thiab cov qauv steel engineering. Nyob rau hauv lub neej yav tom ntej, nrog nruam innovation nyob rau hauv vuam technology thiab tsis siv neeg tswj systems, submerged arc vuam yuav ua tau zoo dua vuam efficiency, txo qis tus nqi, thiab ruaj khov vuam kev ua tau zoo, txuas ntxiv mus ua ib tug tseem ceeb vuam txheej txheem txhawb kev tsim kho ntawm niaj hnub industrial infrastructure.
