Txhuas vuam hlau yog cov khoom siv tshwj xeeb tsim rau koom nrog txhuas thiab nws cov alloys los ntawm ntau cov txheej txheem vuam. Tsis zoo li cov hlau, txhuas ua cov txheej txheem tawv oxide tawv (txhuas oxide) thaum raug rau cov hlau nws tus kheej- Nws tus kheej} Ua rau nws nyuaj rau weld tsis muaj cov muab tub lim. Txhuas Vuam hlau nyob qhov no los ntawm melting ntawm qhov ntsuas kub kom fuse nrog lub hauv paus hlau, tsim cov pob qij txha, ruaj khov. Nws cov kev siv thawj cov kev siv dav dav ntau yam kev lag luam, tsav los ntawm nws cov kev sib xyaw nrog txhuas cov khoom ntiag tug (lub teeb ci, corrosion tsis kam, kev ua haujlwm).
Cov laj thawj tseem ceeb ntawm txhuas vuam hlau
1. Filling thiab txhawb weld pob qij txha
Txhuas feem ntau siv nyob rau hauv cov nplooj ntawv nyias nyias lossis cov txheej txheem txheej txheem (piv txwv li, cov khoom siv nkoj uas muaj lub dav hlau tsis tuaj yeem tsim cov khoom lag luam kom muaj zog txaus Lub vuam hlau ua raws li aKhoom Siv Ntxawmrau:
Choj kis ntawm cov chaw koom nrog (txawm tias cov tsis sib haum xeeb me me hauv haum - Up).
Ntxiv ntim rau lub pas dej weld, kom tag nrho cov kev nkag mus thiab sib koom ua ke uas sib luag uas sib phim lossis tshaj lub zog ntawm lub hauv paus hlau.
Them nyiaj rau cov ntaub ntawv poob thaum lub sij hawm vuam (qee cov txhuas melts thiab ntws tawm ntawm cov pob qij txha ua arc lossis cua sov txav).
Piv txwv li, thaum vuam aluminium roj sib pauv, cov hlau ua kom cov nqaws cua sov, tsim kom muaj kev lag luam ntxeem tau uas tuaj yeem tiv thaiv siab thiab kub hloov.
2. Ua kom nruj mellurgical sib xyaw
Aluminium alloys (piv txwv li, 6061, 5052, 7075) muaj ntau yam sib txawv (qee tus muaj cov khoom sib txawv, silicon, lossis zinc) uas cuam tshuam rau lawv lub zog thiab weldability. Txhuas Vuam Vuam cov xov hlau tau tsim kom phim cov alloys, tiv thaiv tsis muaj zog lossis brittle pob qij txha:
Alloy 4043 Hlau: Muaj silicon, zoo tagnrho rau vuam 6000-series aluminium (uas tseem muaj silicon). Nws txo kev tawg thiab txhim kho fellities ntawm Weld pas dej.
Alloy 5356 Hlau: Muaj cov magnesium, tsim rau 5000 -} series alloys (magnesium-raws). Nws tswj hwm corrosion kuj, tseem ceeb rau cov kev siv tubrog nkoj lossis sab nraum zoov.
Alloy 1100 Hlau: Ntshiab txhuas, siv rau vuam cov lag luam ntshiab (1000 - series) hauv tsis} cov ntawv thov zoo li cov thawv-qib ntim.
Siv hlau tsis sib xws (piv txwv li, ib lub silicon {2} Raws xaim, ua rau porosity (me me) lossis txo lub zog) lossis txo qis zog.
3. Txhawb kev siv vuam vuam
Txhuas Vuam Hlau yog ua kom ua haujlwm nrog cov txheej txheem Aluminium
{{0 {}} roj hlau arc vuam (GMaw / Mig Vuam)
Nyob rau hauv mig vuam rau aluminium, aNruam khoom tawv Txhuas Hlauyog pub los ntawm kev tsim phom. Hlau hlau ua raws li ob lub electrode (ua hluav taws xob kom tsim ARC) thiab muab tub lim. Nws lub luag haujlwm yog:
Caj hluav taws xob ua tau zoo (Aluminium yog cov kev coj ua, yog li cov xov hlau yuav tsum muaj tshuaj oxides kom tsis txhob muaj Arc tsis khov).
Qhuav ntawm tus nqi ib yam li cov hlau hauv paus, ua kom ib pas dej zoo nkauj weld du,.
Ntws yooj yim los sau cov khoob, tshwj xeeb tshaj yog nyob rau hauv cov txhuas nyias (piv txwv li, 0.062-0.25 nti tuab) siv hauv cov chaw tsheb lossis rooj tog zaum.
{{0 {}} roj tungsten arc vuam (gtaw / tig vuam)
Tig Vuam siv Anyias nyias ua tub lim hlau(Tes {-}}}}}} tsis -}} Consumable Tungsten electrode. Tus hlau lub hom phiaj ntawm no yog:
Ntxiv cov khoom siv tub lim yam tsis muaj kev cuam tshuam nrog arc (tsis zoo li Mig, cov xaim tsis yog ib feem ntawm hluav taws xob hluav taws xob).
Cia kom meej tswj tau weld hlaws loj, ua rau nws zoo tagnrho rau intricate ua haujlwm (piv txwv li, kev siv tsheb kauj vab, kev cai tsheb kauj vab).
Ua haujlwm nrog thinner gauges (txawm 0.020-nti txhuas) qhov twg cua sov yuav tsum tau ua tib zoo tswj kom tsis txhob sib ntaus sib tua.
-} lwm cov txheej txheem
Flux -} cored arc vuam (FCAW): Qee cov xov hlau txhuas muaj flux core uas melts tso cov pa roj, tshem tawm cov kev xav tau ntawm cov roj. Qhov no tsis tshua muaj tab sis siv rau kev vuam sab nraum zoov uas cua yuav cuam tshuam cov roj tiv thaiv.
Laser Vuam: Nyias - txoj kab uas hla (0.02 nti
4. Txhim Kho Weld Performance
Tshaj li koom nrog hlau, Aluminium vuam hlau txhim kho cov weld kawg ua haujlwm hauv txoj kev tseem ceeb:
Corrosion Kuj: Cov xov hlau zoo li 5356 (magnesium- leg xwm txheej muaj peev xwm vuam, txuam} Tseem muaj kev tsheb nqaj hlau, lossis tso tsheb hlau luam sab nraum zoov.
Lub zog: Cov ntawv thov cov txheej txheem (piv txwv li, lub dav hlau wings, debder thavames, yuav tsum tau xaim uas, thaum welded, ua tiav lub zog sib koom ua ke ze rau lub hauv paus hlau. Piv txwv li, 7075- t6 aluminium (ib tug high-zog alloy) siv 4145 xaim kom muaj lub zog tensile.
Kev ua siab loj: Cov xaim hlau zoo li 4043 ntxiv yooj yim rau Welds, tiv thaiv kev tawg hauv qhov uas khoov lossis kev co (piv txwv li cov kab ke tsheb kauj vab, cov khoom noj ncua sij hawm.
5. Ua rau kho thiab cov ntaub
Txhuas Vuam Hlau yog qhov tseem ceeb rau kev coj tshiab thiab kho kom puas tau puas tiag tiag txhuas qhov chaw:
Kev yuav: Lub tsev qauv zoo li txhuas scaffolding, cua sov so, lossis marine kho vajtse yuav tsum muaj koom nrog txiav tej daim. Hlau siv cov khoom siv seamless, muaj zog sib txuas.
Kev kho: Kho cov kab nrib pleb hauv txhuas lub cav thaiv, kho lub nkoj hulls, lossis cov thav duab tawg. Cov hlau ntim thaj chaw puas, txoj kev ntseeg tau zoo yam tsis tau hloov tag nrho cov.
Tseem Ceeb Takaway
Aluminium vuam hlau yog deb tshaj li tsuas yog "muab tub lim" - nws yog cov pob qij txha ua kom muaj zog, sib xws, thiab cov pob qij txha sib xyaw ua ke. Nws lub luag haujlwm sib txawv los ntawm daim ntawv thov: txuam cov alloy alloy, txhawb kev vuam cov txheej txheem, txhim kho ob qho kev tsim kho kom zoo nkauj, thiab kho kom zoo. Xaiv cov hlau zoo (raws li lub hauv paus alloy thiab vuam txoj kev) yog qhov tseem ceeb kom ua kom tiav, ntev}} kav cov txhuas welds.
