TIG welding (Tungsten Inert Gas welding) thiab MIG welding (Metal Inert Gas welding) yog ob txoj kev siv hlau vuam. Lawv txawv heev nyob rau hauv lub hauv paus ntsiab lus, khoom siv, daim ntawv thov scenarios, thiab txoj kev ua hauj lwm. Cov hauv qab no muab cov ncauj lus kom ntxaws sib piv los ntawm ntau qhov kev pom:
1. Cov Ntsiab Cai thiab Cov Txheej Txheem Tseem Ceeb
TIG vuam siv cov khoom siv tsis yog -tungsten electrode ua tus neeg xyuas pib. Lub siab - zaus arc yog ignited thiab tswj kom ruaj khov combustion. Filler hlau yog manually ntxiv (los yog cia li pub) thaum lub sij hawm vuam txheej txheem, thiab ib tug inert roj (xws li argon) tiv thaiv lub weld pas dej ua ke thoob plaws hauv lub txheej txheem los tiv thaiv oxidation. Nws cov yam ntxwv tseem ceeb yog kev ruaj ntseg arc siab thiab muaj zog tswj cov khoom siv hluav taws xob, ua rau nws haum rau nyias daim hlau lossis precision vuam.
MIG vuam siv cov khoom siv vuam hlau ua cov electrode. Cov hlau tsis tu ncua pub rau hauv thaj tsam arc los ntawm kev pub mis, yaj los ua cov vuam seam. Ib qho roj inert (xws li argon ntshiab) lossis cov roj sib xyaw (xws li argon + carbon dioxide) tiv thaiv lub pas dej ua ke. Vuam efficiency yog txiav txim los ntawm cov hlau pub ceev thiab tam sim no / voltage tsis. Nws cov txiaj ntsig tseem ceeb yog kev vuam ceev thiab kev ua haujlwm siab, ua rau nws haum rau nruab nrab - cov phaj tuab lossis ntau lawm.
2. Cov khoom siv thiab cov nqi sib piv
TIG vuam cov cuab yeej feem ntau suav nrog lub zog hluav taws xob, vuam teeb, lub tog raj kheej roj, ntsuas ntsuas, thiab qhov cua txias. Cov qauv siab- kawg yuav ua rau lub plawv dhia lossis dej- vuam vuam torches. Cov nqi khoom siv yog siab dua, tab sis kev saib xyuas yog yooj yim, thiab cov nqi siv tau (tungsten electrodes, muab tub lim) qis dua. Piv txwv li, nkag mus-theem TIG cov vuam siv hluav taws xob raug nqi kwv yees li 5,000-15,000 RMB, thaum cov khoom siv qib siab tuaj yeem ncav cuag 30,000-80,000 RMB.
MIG vuam cov cuab yeej muaj ib tug complex qauv, yuav tsum tau ib tug hlau feeder, tiv tauj cov lus qhia, xaim pub hose, thiab lwm yam Cheebtsam, thiab kuj yuav tsum tau ntau dua roj purity. Cov khoom siv tus nqi sib txawv heev nyob ntawm lub zog thiab qib automation. Cov qauv qub raug nqi kwv yees li 8,000-25,000 RMB, thaum cov khoom siv rau cov kab ntau lawm tuaj yeem tshaj 100,000 RMB. Txawm li cas los xij, MIG vuam siv cov khoom siv ntau dua (vuam hlau), yog li cov nqi khiav haujlwm ntev yuav tsum tau txiav txim siab.
3. Daim ntawv thov scenarios thiab cov ntaub ntawv hloov tau
TIG welding, vim nws cov khoom siv hluav taws xob ntau thiab deformation tsawg, yog dav siv rau cov ntawv nyias (0.5-3mm), precision qhov chaw, sib txawv hlau vuam (xws li txhuas- tooj liab, stainless hlau-} carbon steel), thiab siab - xav tau teb xws li cov hlab ntsha siab thiab aerospace. Piv txwv li, thaum vuam 0.8mm aluminium alloy nyias nplooj ntawv, TIG vuam tuaj yeem ua tiav ib qho -ib sab vuam nrog ob sab tsim, thiab cov hlaws hlaws qhov siab yog tsawg dua lossis sib npaug li 0.5mm.
MIG welding, nrog nws cov txiaj ntsig zoo, ua tau zoo nyob rau hauv nruab nrab - daim hlau tuab (3 hli thiab siab dua), welds ntev, thiab cov xwm txheej ntau lawm, xws li lub cev tsheb, cov qauv hlau, thiab cov yeeb nkab vuam. Siv cov vuam ntawm 10 hli carbon steel daim hlau ua piv txwv, qhov ceev ntawm MIG vuam tuaj yeem yog 3-5 npaug ntawm TIG vuam, thiab qhov nkag mus rau qhov tob sib xws zoo dua. Tsis tas li ntawd, MIG welding muaj qhov yuav tsum tau qis dua rau cov khoom siv kom huv si, ua rau nws tsim nyog rau kev ua haujlwm sab nraum zoov lossis hauv qhov chaw.
4. Kev khiav hauj lwm nyuaj thiab kev txawj ntse
TIG welding yuav tsum muaj kev txawj ua haujlwm siab heev, yuav tsum muaj kev tswj hwm ntawm arc ntev, muab lub sijhawm xaim, thiab vuam ceev. Cov pib tshiab xav tau ntau pua teev ntawm kev xyaum kom ua tiav qhov zoo ib yam. Piv txwv li, thaum welding stainless hlau, lub arc ntev yuav tsum tau tswj nyob rau hauv 1-3mm, txwv tsis pub porosity los yog tsis muaj fusion yuav tshwm sim.
MIG vuam yog qhov yooj yim rau kev khiav lag luam; welding ruaj khov tuaj yeem ua tiav los ntawm kev kho cov hlau pub ceev thiab qhov hluav taws xob, thiab lub sijhawm kawm rau cov neeg pib tshiab yog luv. Txawm li cas los xij, kev saib xyuas yuav tsum tau them rau cov roj ntws (feem ntau 15-25L / min) thiab cov xaim txuas ntev (10-15mm), txwv tsis pub spatter lossis porosity yuav tshwm sim. Automated MIG welding (xws li robotic welding) tuaj yeem txo qhov kev cia siab ntawm kev siv tes ua haujlwm.
5. Cov qauv kev lag luam thiab cov kev xav tau zoo
TIG welding yuav tsum tau ua raws li cov qauv xws li ISO 15614-1 (Vuam txheej txheem tsim nyog ntawm cov khoom siv hlau), nrog rau cov kev cai nruj heev rau kev tsim vuam thiab tsis yog- kuaj kev puas tsuaj (xws li X-ray), thiab feem ntau yog siv rau hauv qhov tseem ceeb xws li lub zog nuclear thiab cov khoom siv kho mob.
MIG welding yuav tsum tau ua raws li cov qauv xws li AWS D1.1 (Structural Welding Code -} Steel), tsom rau kev tswj kev nkag mus tob, weld hlaws qhov siab, thiab spatter tus nqi, thiab yog tsim rau cov kev siv dav dav xws li kev tsim kho thiab kev tsim khoom.
6. Kev tiv thaiv ib puag ncig thiab kev nyab xeeb
TIG vuam, vim yog siv cov roj inert, tsis muaj pa taws lossis plua plav thaum lub sijhawm vuam. Txawm li cas los xij, kev sib tsoo cov tungsten electrode tuaj yeem tsim cov hmoov av radioactive (thaum siv thoriated tungsten electrodes).
MIG vuam, yog siv cov roj sib tov uas muaj cov pa roj carbon dioxide, yuav tsim cov pa me me, yuav tsum muaj qhov cua hauv zos. Ob txoj kev xav tau kev tiv thaiv siab -kub arcs thiab spatter.