Cov ntsiab lus ua los ntawm txhuas thiab nws cov alloys yog siv nyob rau hauv yuav luag txhua ceg ntawm kev tsim khoom. Kev siv lub teeb hlau no nrog cov thermal conductivity thiab hluav taws xob ntau tshaj plaws hauv cov khoom siv hauv tsev. Yog li ntawd, thaum muaj ib qho malfunction tshwm sim, nws yuav tsum tau weld aluminium lug thiab cov khoom nyob rau hauv tsev. Nws yuav luag tsis tuaj yeem ua haujlwm kho nrog cov hlau capricious yam tsis muaj aluminium vuam tshuab. Thiab yog tias yav dhau los xws li kev ua haujlwm tau muaj nyob rau hauv kev lag luam, tam sim no nws tsis yooj yim los ua nws hauv tsev rhiav.
Txoj kev ntawm aluminium welding
Lub tshuab ntawm cov txheej txheem vuam ntawm txhuas, zoo li lwm yam hlau, muaj nws tus yam ntxwv. Yog li ntawd, ib tug novice welder yuav tsum paub thiab to taub ntau yam ntawm cov hlau no. Muaj ntau yam khoom tshwj xeeb uas aluminium muaj. Vuam nws koom nrog kev npaj ua ntej ntawm cov khoom thiab kev sib txuas ncaj qha ntawm qhov chaw.
Nyob rau hauv rooj plaub no, nws yuav tsum tau coj mus rau hauv tus account lub zog ntawm cov hlau:
- Ib txwm ntawm lub ntsej muag txhuasmuaj oxide zaj duab xis, uas txo cov txheej txheem vuam. Lub melting point ntawm cov hlau yog 660 ℃, thaum lub melting ntawm zaj duab xis tshwm sim ntawm 2000 ℃.
- Thaum txhuas vuam cuam tshuam nrog kev tsim cov hlau txuas txuas ntxiv, uas tau them tam sim nrog cov yeeb yaj kiab oxide. Nws tiv thaiv kev tsim cov seam zoo nyob rau hauv qhov qhib cua. Yog li ntawd, lub ntsiab mob rau vuam aluminium yog los tiv thaiv cov cua sov cheeb tsam nrog argon.
- Dissolved hydrogen, uas muaj nyob rau hauv cov muaj pes tsawg leeg ntawm txhuas, yog tso tawm thaum lub sij hawm welding rau hauv cov huab cua, uas ua rau cov tsim ntawm crystalline tawg thiab pores.
- Nyob rau hauv lub xeev molten, txhuas muaj lub siab fluidity, uas ua rau nws nyuaj heev los tsim ib tug weld pas dej ua ke. Yog li ntawd, thaum welding aluminium, nws yuav tsum tau npaj kom zoo cua sov dissipation los ntawm kev sib tshuam.
- Vim qhov sib npaug ntawm cov kab sib txuas ntawm cov hlau, muaj qhov loj me thaum lub caij txias.
- High thermal conductivity ua rau muaj qhov nce ntawm qhov tam sim no thaum vuam txhawm rau txo nws lub sijhawm.
- hom thiab txoj kev vuam aluminium hauv tsev yog qhov nyuaj rau kev teeb tsa kom raug vim qhov nyuaj ntawm kev txiav txim siab qib alloy.
Weld quality
Txhawm rau ua kom muaj zog thiab txhim khu kev qha ntawm cov khoom siv txhuas, cov welder yuav tsum ua ob peb kauj ruam yooj yim:
- Txhawm rau tshem cov oxide zaj duab xis los ntawm qhov chaw ntawm kev sib txuas ntawm cov khoom. Qhov kev ua haujlwm no tuaj yeem ua tiav ob qho tib si los ntawm kev ntxuav qhov sib txuas nrog cov txhuam hlau, thiab siv tshuaj lom neeg tshwj xeebcov kuab tshuaj. Tab sis txoj hauv kev zoo tshaj plaws yuav yog vuam aluminium nrog cov khoom siv semi-automatic nyob rau hauv hom mem tes, uas, los ntawm kev ua kom sov tam sim ntawm cov hlau, muab kev tshem tawm zoo ntawm txheej oxide.
- Ua kom sov li cov hlau hauv qhov xav tau qhov kub thiab txias. Qhov yuam kev tseem ceeb ntawm cov neeg pib welder yog overheating ntawm cov hlau, uas ua rau hlawv ntawm qhov sib koom ua ke.
- Qhov tseem ceeb linear shrinkage ntawm txhuas thaum txias tuaj yeem ua rau deformation ntawm vuam. Yog li ntawd, nws yog ib qho tsim nyog yuav tsum ua kom tiav cov txheej txheem vuam nrog qis tam sim no. Tab sis thaum pib ua hauj lwm, nws yog ib qho tsim nyog yuav tsum tau siv lub siab tam sim no los xyuas kom meej qhov nkag ntawm cov yeeb yaj kiab oxide.
Kev sib txuas zoo ntawm cov khoom siv txhuas yog nyob ntawm qhov ua tau zoo ntawm tag nrho cov haujlwm no.
YInverter vuam tshuab
Raws li qee qhov xwm txheej, aluminium welding nrog lub inverter kuj ua tau nyob hauv tsev. Rau kev ua haujlwm zoo li no, yuav tsum tau them nyiaj tshwj xeeb rau cov khoom siv. Cov kev xav tau rau lub tshuab aluminium vuam yog tsawg. Txhawm rau tsim kev sib txuas koj yuav xav tau:
- Ntaus rau cua sov electrodes. Frying cov electrodes yog qhov yuav tsum tau ua thiab tsim nyog rau kev koom nrog txhuas qhov chaw. Feem ntau, kev sim ua tsis tiav ntawm aluminium welding tshwm sim vim kev npaj tsis zoo ntawm cov khoom siv.
- Tshwj xeeb electrodes yog siv rau vuam hlau nrog siab thermal conductivity, uas muaj xws li txhuas.
- Inverter(Aluminium vuam tshuab). Nws qib kev ua tau zoo thaum siv hauv tsev tsis muaj teeb meem.
Cov txheej txheem ntawm kev sib txuas ntawm txhuas qhov chaw yuav tsum tau ua raws li kev tiv thaiv ntawm cov roj inert.
Basic welding cov kauj ruam:
- Kev npaj ua haujlwm suav nrog kev ntxuav qhov chaw ntawm cov khoom yuav tsum tau koom nrog thiab yuav tsum tau npaj cov electrodes.
- Cov txheej txheem vuam yuav tsum tau ua tib zoo thiab maj mam, nruj me ntsis soj ntsuam qhov xav tau qhov tob ntawm qhov nkag. Tom qab qhov kawg ntawm lub vuam theem, cov khoom siv roj tsis raug kaw li tsib vib nas this.
Electrode khoom
Lub hauv paus ntawm electrodes rau aluminium welding yog cov hlau ntshiab, qhov loj ntawm qhov tseem ceeb, nrog rau cov khoom ntxiv uas txhim kho txoj kev sib txuas. Cov cuab yeej cuab tam ntawm vuam fixtures yog lub ntsiab parameter uas lawv raug xaiv rau vuam. Lub zog ntawm seam nyob ntawm qhov no.
Lub npe tseem ceeb ntawm electrodes rau txhuas vuam: OZA, OZA-1, OZR-2, OZANA-2. Tag nrho cov electrodes yog hygroscopic, yog li lawv yuav tsum tau qhuav ntawm qhov kub ntawm 200 ℃ ua ntej siv.
Semi-automatic kev twb kev txuas
Vuam aluminium semi-automatically ua nyob rau hauv kev tiv thaiv ntawm cov roj inert. Argon yog siv raws li cov pa roj. Nws muaj peev xwm ua tau txhuas koom nrog los ntawm cov khoom siv semi-automatic yam tsis tas siv cov roj inert, nyob rau hauv cov ntaub ntawv ntawm kev siv consumable flux-cored hlau. Xws li ib tug ntaus ntawv nyob rau hauvLub sijhawm cua sov tuaj yeem ua kom atomize cov hmoov hlau uas muaj hlau. Cov huab zoo li no ua haujlwm ntawm kev tiv thaiv, zoo li argon.
Qhov tsis zoo ntawm txoj kev no yog qhov tsis zoo ntawm cov vuam, uas txwv tsis pub siv ntau. Lub luag haujlwm tseem ceeb ntawm tus welder yuav txiav txim siab seb txoj kev twg los ua kev sib txuas.
TIG technology
Cov thev naus laus zis no siv cov hluav taws xob tsis muaj hluav taws xob uas muaj cov tungsten thiab cov hlau txuas ntxiv uas tuaj yeem sau cov seam ntawm qhov chaw. Kev siv cov txheej txheem zoo li no suav nrog kev siv AC hom thiab kev siv hluav taws xob ntau zaus arc ignition. Hauv qhov no, kev puas tsuaj ntawm cov yeeb yaj kiab oxide tshwm sim los ntawm cathode sputtering ntawm qhov tam sim no nrog rov qab polarity.
MIG method
Hauv MIG thev naus laus zis, cov khoom siv ntxiv yog cov khoom siv hluav taws xob rau lawv tus kheej rau txhuas vuam. Cov khoom no yog pub rau hauv qhov chaw sib txuas los ntawm ib lub xov hlau feeder.
Tau kawg, nws yog qhov nyuaj heev kom ua tau zoo aluminium vuam hauv tsev nrog txoj kev no, txij li koj yuav tsum tau siv lub cuab yeej nrog lub suab arc hom. Thaum vuam, lub teeb yuav tsum tau coj mus rau ntawm lub kaum sab xis ntawm 10-20 degrees mus rau ntsug, thaum qhov kev ncua deb ntawm qhov sib koom ua ke thiab lub nozzle yuav tsum txog li 10-15 hli.
Aluminium Gas Vuam tswv yim
Ua ntej koj pib vuam, koj yuav tsum npaj txhua yam khoom thiab cov cuab yeej. Kev sib txuas ntxiv txhim khu kev qha tuaj yeem ua tiav nrogntxiv tshwj xeeb pas nrig. Tom qab ntxuav tag nrho ntawm qhov chaw ntawm cov khoom, cov chaw no yuav tsum tau kho nrog flux. Cov txheej txheem ntawm kev npaj no yuav txo qhov cuam tshuam ntawm oxide zaj duab xis thiab yuav tso cai rau ib nrab-automatic vuam ntawm txhuas nrog qhov zoo tshaj plaws.
Tom ntej no, lub tshuab hluav taws xob tau qhib thiab ua kom sov mus txog qhov ntsuas kub zoo. Cov kauj ruam tom ntej yog kom sov lub welded sib koom ua ke rau lub melting kub ntawm cov hlau. Thaum xws li cua sov, ib tug pas nrig ntxiv yog siv rau qhov sib txuas. Thaum lub sijhawm ua haujlwm no, cov hlau yog yaj thiab sib xyaw, ua rau muaj kev sib koom ua ke.
Nco ntsoov tias kev koom nrog txhuas hauv tsev rau cov neeg siv khoom tshiab yog suav tias yog txoj haujlwm nyuaj. Cov teeb meem zoo li no feem ntau yog nyob ntawm tus yam ntxwv ntawm cov khoom siv. Ib tug pib yuav tsum tau ua siab ntev kom tau txais qhov tsim nyog ntawm kev vuam aluminium nto.
