Txoj kev uas feem ntau thiab txhim khu kev qha ntawm kev koom nrog ntau yam hlau yog vuam. Tab sis muaj ib tug xov tooj ntawm cov hlau uas nyuaj heev los ua ke nyob rau hauv ib txwm txoj kev. Txhawm rau tsim kom muaj kev sib tiv tauj ib qho ntawm cov hlau xws li titanium, aluminium, stainless hlau thiab ntau lwm tus, argon vuam yog siv. Rau cov pib tshiab, thev naus laus zis nyuaj me ntsis.
Txoj kev ntawm argon vuam
Kev sib txuas ntawm cov hlau nto tshwm sim hauv thaj tsam ntawm kev ua ntawm argon. Kev siv cov roj inert nyob rau hauv cov vuam hlau yog ib hom kev tiv thaiv kev tiv thaiv ntawm cov txheej txheem oxidation, uas tshwm sim los ntawm kev cuam tshuam nrog oxygen nyob rau hauv ib puag ncig huab cua. Nws yog qhov yooj yim dua los hais tias cov roj inert npog qhov chaw vuam los ntawm kev nkag mus ntawm cov pa oxygen mus rau thaj tsam ntawm cov khoom yuav tsum tau koom nrog.
Txhua argon vuam thev naus laus zis suav nrog kev siv phau ntawv, semi-automatic thiab tsis siv neeg ua haujlwm. Nws yog los ntawm cov txheej txheem ntawm vuam thiab hom electrode siv uas tsim nyog ntawm cov qauv ntawm cov txheej txheem vuam tshwm sim.
Tungsten hlau yog siv los ua cov khoom siv tsis siv hluav taws xob, uas lav qhov kev sib txuas ntawm cov hlau zoo.
Techniqueua kev sib txuas
Kev paub txog cov kev cai yooj yim ntawm txoj haujlwm yuav ua rau vuam nrog argon yooj yim dua, thiab cov lus qhia rau cov pib tshiab yuav pab kom ua tiav cov vuam zoo.
Qee lub tswv yim los ntawm cov kws paub txog vuam:
- Qhov zoo ntawm kev sib txuas ntawm qhov chaw yog txo qis los ntawm qhov ntev arc. Qhov ntev nws yog, qhov dav ntawm lub seam yuav yog thiab qhov ntiav qhov tob ntawm melting. Ib qho hluav taws xob uas tsis yog khoom siv yuav tsum tau muab tso rau hauv qhov sib ze rau qhov sib koom ntawm cov khoom.
- Txhawm rau tsim kom muaj qhov sib sib zog nqus thiab nqaim, koj yuav tsum ua tiav qhov ntev ntawm lub teeb thiab electrode. Txawm me me deviations ho impair welding. Thaum vuam nrog argon, yuav tsum tau saib xyuas tshwj xeeb thiab raug.
- Txhawm rau tiv thaiv nitrogen thiab oxygen los ntawm kev nkag mus rau hauv thaj chaw vuam, cov khoom siv hluav taws xob thiab cov khoom ntxiv yuav tsum nyob hauv thaj chaw no, tab sis nyob rau hauv ib txheej ntawm argon.
- Kev noj cov hlau yog qhov ua haujlwm tsis yooj yim, vim tias cov jerks ua rau cov hlau tawg. Lub tswv yim ntawm cov khoom no yog ib yam thiab du.
- Yog hais tias lub vuam hloov mus ua convex thiab sib npaug, qhov no qhia tau tias cov hlau melting tsawg, uas qhia tau hais tias qhov tsis zoo ntawm argon vuam.
- Txhawm rau tsim cov seam me me thiab nws qhov chaw du, cov xaim xaim yuav tsum tau coj mus rau pem hauv ntej ntawm lub teeb thiab ntawm lub kaum sab xis rau lub dav hlau ntawm cov hlau. Qhov xwm txheej no yuav tso cai rau koj kom tswj tau tag nrho cov txheej txheem ntawm vuam nrog argon.
- Yog li ntawd nitrogen thiab oxygen tsis nkag mus rau hauv thaj tsam ntawm kev sib koom ntawm cov khoom, cov txheej txheem vuam tsis tuaj yeem nyeem thiab ua tiav nrog kev txav tam sim ntawd. Kev ua haujlwm yuav tsum tau pib 15-20 vib nas this tom qab muab roj, thiab ua tiav ua ntejburner shutdown.
- Nws yog qhov tsim nyog los ua kom tiav txoj haujlwm los ntawm kev txo lub zog tam sim no nrog lub rheostat suav nrog hauv argon vuam tshuab. Yog tias koj tsuas nqa lub teeb rau ib sab, koj tuaj yeem qhib qhov nkag ntawm oxygen thiab nitrogen mus rau qhov chaw vuam.
Qhov xav tau tseem ceeb ua ntej ua haujlwm yog kev tu kom zoo thiab degreasing ntawm mating nto ntawm cov khoom.
Qhov zoo ntawm kev siv hom vuam
Muab hais tias argon vuam yog ib txoj hauv kev zoo ntawm kev koom nrog cov hlau, nyuaj rau lwm hom kev koom ua ke, qhov zoo ntawm nws siv yog raws li cov cuab yeej no. Cov no suav nrog:
- Cov cua kub me me ntawm qhov sib koom ua ke, uas tso cai rau koj khaws cov duab thiab qhov ntev ntawm qhov.
- Inert gas yog denser thiab hnyav dua huab cua, yog li nws tuaj yeem tiv thaiv qhov vuam zoo.
- Lub zog siab ntawm lub thermal arc txhawb rau lub sijhawm luv luv ntawm argon vuam.
- Lub peev xwm tsom qhov vuam tso cai rau koj ua haujlwm hauv qhov chaw nyuaj mus txog.
- vuam nyias qhov yooj yim vim qhov tsis kub siab heev hauv thaj tsam melting ntawm cov hlau.
Qhov tsis zoo ntawm argon vuam
Zoo li lwm yam kev sib txuas, argon vuam muaj qee qhov tsis zoo uas yuav tsum tau txiav txim siab thaum ua txoj haujlwm. Lub ntsiab tsis zoo ntawm xws li kev sib txuas:
- Lub xub ntiag ntawm cov cua ntsawj ntshab txo qhov kev tiv thaiv ntawm qhov chaw ntawm soldering, yog li nws raug pom zoo kom ua haujlwm kaw.thaj chaw. Tsuas yog nyob rau hauv rooj plaub no, koj yuav tsum tau saib xyuas qhov cua zoo ntawm cov khoom.
- Yog tias nws yuav tsum tau txais lub siab-ampere arc, nws yog qhov tsim nyog los xyuas kom meej cov khoom sib txuas ua kom txias.
- Cov cuab yeej yog nyob rau hauv qeb ntawm complex fixtures, yog li argon vuam rau beginners yog ib tug nyuaj txheej txheem. Tsuas yog ib tus kws paub txog welder tuaj yeem ua qhov tseeb ntawm cov qauv.
Argon kev sib txuas hom
Yuav kom vuam ua qhov chaw zoo, koj yuav tsum xaiv txoj haujlwm zoo. Qhov kev txiav txim zoo li no, raws li txoj cai, tsuas yog ua tau rau cov kws tshaj lij uas muaj kev paub dhau los.
Cov xwm txheej rau kev xaiv kom raug ntawm vuam hom:
- Kev taw qhia thiab polarity ntawm tam sim no ncaj qha nyob ntawm cov khoom ntawm cov hlau tau koom nrog.
- Lub zog tam sim no yog txiav txim siab raws li peb yam tseem ceeb, uas yog lub polarity, txoj kab uas hla ntawm electrode siv, thickness thiab hom khoom. Nws yog nyob rau hauv kev xaiv no parameter uas koj yuav xav tau koj tus kheej kev ua ib tug welder.
- Qhov sib xws ntawm qhov ntws ntawm cov roj inert cuam tshuam rau kev noj argon. Qhov ntws thaum vuam aluminium nrog argon yuav tsum tsis muaj pulsations.
Cov khoom siv
Ua ntej koj nkag siab lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm lub cuab yeej, koj yuav tsum paub koj tus kheej nrog cov khoom tseem ceeb ntawm cov cuab yeej. Rau kev vuam zoo koj yuav xav tau:
- vuam tshuab ntawm txhua yam nrog idling 60-70 volts.
- Fais fab contactor xa hluav taws xob mus rau lub taub hau los ntawmwelding tshuab.
- Oscillator. Qhov no yog ib qho khoom siv uas hloov cov qauv hluav taws xob mus rau 2000-3000V ntawm 150-500kHz, ua kom yooj yim pib lub arc.
- Ceramic burner.
- Ib yam khoom tsim los rau tshuab nrog argon.
- Inert gas tank.
- Kho cov hlau thiab tsis siv hluav taws xob.
Lub cuab yeej ua haujlwm li cas
Tom qab kev ntxuav ua ntej ntawm qhov chaw yuav tsum tau koom nrog thiab teeb tsa hom vuam yam xav tau, peb muab cov xaim ntawm sab laug tes, thiab sab xis teeb. Siv lub pob khoom siv roj, uas nyob rau ntawm lub teeb kov, peb muab roj rau thaj tsam vuam.
Cov electrode yuav tsum tau muab tso rau hauv lub qhov cub kom nws protrudes li ntawm 5 hli. Peb nqa lub teeb mus txog qhov deb ntawm 2 hli los ntawm qhov chaw vuam. Tom qab ntawd peb tig rau ntawm chav tsev thiab siv qhov hluav taws xob rau lub electrode kom txog thaum muaj arc tshwm sim. Argon ntawm lub sijhawm no nkag mus rau qhov chaw vuam.
Nrog rau qhov tod tes, tus welder coj cov xaim xaim mus rau hauv qhov sib txawv, uas melts, sib koom ua ke ntawm cov hlau. Txav mus maj mam raws cov seam, peb txuas tag nrho ob ntu.
nyuaj hauv aluminium welding
Aluminium yog suav tias yog cov khoom siv dav tshaj plaws hauv kev lag luam. Vuam nws yog ib qho nyuaj heev vim yog oxide zaj duab xis, nyob rau hauv uas lub melting yog siab tshaj ntawm cov hlau. Ua ntej koj pib vuam aluminium nrog argon, koj yuav tsum ua tib zoo kawm tag nrho cov nuances ntawm kev sib koom ua ke:
- Qhov yuam kev tseem ceeb ntawm cov pib vuam yog qhov ua ntej tsis zoohlau tu. Ib daim ntawv cog lus hlau zoo tsis muaj lus nug yog tias muaj av, plua plav lossis roj rau ntawm qhov chaw.
- Qhov qis melting ntawm txhuas thiab nws cov thermal conductivity xav tau ntau lub zog los ntawm inert gas welding.
- Aluminium melts ntawm qhov kub qis, txhawm rau kom tsis txhob muaj kev puas tsuaj rau cov khoom siv, koj yuav tsum tau teeb tsa hom raug ntawm inverter.
- Aluminium welding tshuab yuav tsum muaj lub luag haujlwm tshwj xeeb uas, ua ntej vuam, nws muab cov khoom siv tam sim no kom yaj cov yeeb yaj kiab, thiab thaum kawg kom ua tiav qhov crater.
Hlau Nto Tu
Qhov tseem ceeb rau kev ua haujlwm zoo ntawm argon vuam yog qhov zoo ua ntej ntxuav ntawm cov hlau nto.
Kev huv yog ua tiav ob txoj hauv kev:
- Txoj kev kho tshuaj lom neeg ua rau kev puas tsuaj ntawm oxide txheej ntawm cov hlau vim yog kev ua haujlwm ntawm cov tshuaj tshwj xeeb. Koj tuaj yeem npaj ib qho kev sib xyaw ntawm koj tus kheej, uas koj yuav tsum tau yaj 50 grams ntawm kev siv sodium thiab 45 grams sodium fluoride hauv ib liter dej. Tom ntej no, koj yuav tsum do qhov loj kom txog thaum tau txais cov tshuaj. Qhov saum npoo yog kho nrog qhov muaj pes tsawg leeg, tom qab ntawd nws raug ntxuav tawm nrog dej ntws.
- Txoj kev tu neeg kho tshuab suav nrog kev ua haujlwm nrog txhuam hlau lossis ntawv xuab zeb. Nyob rau tib lub sijhawm, nws yog ib qho tsim nyog los xyuas kom meej tias tsis muaj lwm cov hlau nyob rau saum npoo ntawm cov cuab yeej ntxuav, cov khoom uas tuaj yeem cuam tshuam qhov kawg ntawm kev ua haujlwm.
Txoj kev ntawm stainless hlau vuam
Stainless hlau yog cov hlau uas muaj kev tiv thaiv corrosion thiab lub zog loj, dav siv hauv txhua qhov huab cua. Cov khoom tshwj xeeb ntawm cov hlau no yuav tsum tau ua cov thev naus laus zis tshwj xeeb rau cov khoom. Nws yog qhov vuam ntawm cov hlau tsis muaj steel nrog argon uas ua rau nws muaj peev xwm ua tiav qhov zoo ntawm kev sib txuas ntawm cov khoom zoo li no.
Qhov teeb meem tseem ceeb thaum ua haujlwm nrog stainless hlau yog nws tawg. Tsis tas li ntawd, muaj lwm yam nta:
- Vim qhov tsis muaj thermal conductivity ntawm stainless hlau thaum lub sij hawm vuam txheej txheem, qhov kub nyob rau hauv lub melting cheeb tsam yuav tsum siab, uas tsim ib tug zoo kev pheej hmoo ntawm hlawv los ntawm cov hlau. Txhawm rau zam qhov teeb meem no, nws yuav tsum xaiv lub zog qis dua li cov hlau zoo tib yam.
- Stainless steel muaj qhov siab tshaj tawm, yog li thaum vuam, muaj qhov loj loj casting shrinkage, uas tuaj yeem ua rau tawg ntawm cov hlau. Txhawm rau zam qhov no, koj yuav tsum tsim kom muaj qhov sib txawv loj ntawm cov khoom ntawm cov khoom.
- Vim cov hlau tsis muaj hluav taws xob muaj zog, cov electrode tau kub heev thaum vuam, uas tseem cuam tshuam qhov zoo ntawm kev sib txuas.
Thaum vuam discs nrog argon, nws yuav tsum tau coj mus rau hauv tus account tias qhov kub tsis raug ntawm vuam hom tuaj yeem ua rau poob ntawm cov khoom tiv thaiv corrosion ntawm stainless hlau.
Txuas nrog lub tshuab semi-automatic
Cov txheej txheem semi-automatic argon vuam ua kom muaj txiaj ntsig zoo. Technology ntawm daim ntawv thov ntawm vuam nyob rau hauv semi-automatichom tso cai rau koj kom tau txais kev ntseeg siab thiab pom kev zoo nkauj welds.
Lub ntsiab nuance ntawm semi-automatic vuam yog qhov yuav tsum tau siv nickel ua ib feem ntawm vuam hlau. Yog tias nws tsim nyog los txuas cov yeeb nkab nrog argon, tom qab ntawd nrog lub thickness loj ntawm ib feem, cov pa roj carbon dioxide kuj ntxiv rau kev tiv thaiv muaj pes tsawg leeg, uas txhim kho cov miscibility ntawm vuam npoo.
Cov txheej txheem vuam semi-automatic tuaj yeem ua tiav siv ntau lub thev naus laus zis:
- pulse mode;
- dav hlau hloov mus;
- short arc.
Kev nyab xeeb
Thaum vuam nyob rau hauv ib puag ncig argon, koj yuav tsum ua raws li cov cai rau kev ua haujlwm nyab xeeb. Yeej, lawv tsis txawv ntau ntawm cov kev cai uas yuav tsum tau ua thaum lub sij hawm vuam cov pa, tab sis muaj qee qhov nuances:
- Nws yog ib qho tseem ceeb los xyuas lub tog raj kheej roj kom nruj, vim tias cov roj hauv lawv nyob rau hauv siab.
- Tsis txhob cia cov argon xau, vim tias cov roj no hnyav dua li cua thiab tsis muaj ntxhiab tsw. Yog li ntawd, nws maj mam tsub zuj zuj tuaj yeem ua rau tuag taus.
- Ua haujlwm hauv daim npog tiv thaiv, khau tshwj xeeb thiab khaub ncaws.
- Ua raws li cov cai ntawm kev nyab xeeb hluav taws xob. Cov cuab yeej siv hauv tsev yuav tsum yog hauv av kom zoo.
- Kev saib xyuas tshwj xeeb yuav tsum tau them rau kev tiv thaiv qhov tshwm sim ntawm hluav taws. Txhua yam khoom siv hluav taws xob yuav tsum raug tshem tawm ntawm qhov chaw vuam.
- Yuav tsum txwv tsis pub muaj neeg txawv tebchaws nyob hauv qhov chaw vuam.
Nco ntsoov qhov ntawdargon vuam tso cai rau koj kom tau txais kev sib txuas zoo ntawm cov hlau, uas tsis tuaj yeem ua rau lwm txoj hauv kev. Ib tug novice welder yuav tsum tau siv zog ntau thiab ua siab ntev kom paub txhua txoj hauv kev ntawm argon vuam.
