TIG welding (Tungsten Inert Gas Vuam), tseem hu ua non-melting tsis tshua muaj roj tiv thaiv arc vuam. Txawm hais tias nws yog phau ntawv welding lossis tsis siv neeg vuam ntawm stainless hlau nrog lub thickness ntawm 0.5 mus rau 4.0 hli, TIG vuam yog feem ntau siv vuam txoj kev. TIG vuam nrog cov xaim xaim feem ntau yog siv rau hauv qab vuam ntawm cov hlab ntsha siab vim tias qhov zoo dua huab cua nruj ntawm TIG vuam tuaj yeem txo qhov porosity ntawm vuam seam thaum vuam ntawm cov hlab ntsha siab. Lub tshav kub ntawm TIG vuam yog DC arc, qhov ua haujlwm voltage yog 10-95 volts, tab sis tam sim no tuaj yeem ncav cuag 600 amps. Txoj kev sib txuas kom raug ntawm lub tshuab vuam yog tias lub tshuab ua haujlwm txuas nrog tus ncej zoo ntawm lub zog hluav taws xob, thiab tus ncej tungsten hauv vuam teeb yog siv los ua tus ncej tsis zoo. Inert gas feem ntau yog argon.
Vuam txheej txheem
Inert gas yog pub los ntawm lub teeb los tsim ib daim ntaub thaiv nyob ib ncig ntawm lub arc thiab tshaj lub weld puddle. Txhawm rau kom cov cua sov nkag, 5 feem pua hydrogen feem ntau yog ntxiv rau argon. Txawm li cas los xij, thaum vuam ferritic stainless hlau, hydrogen tsis tuaj yeem ntxiv rau argon. Kev siv roj yog li 3 txog 8 litres ib feeb. Nyob rau hauv cov txheej txheem vuam, ntxiv rau tshuab inert gas los ntawm vuam vuam, nws yog qhov zoo dua los tshuab cov roj siv los tiv thaiv lub nraub qaum ntawm vuam los ntawm hauv qab vuam.
Yog tias xav tau, lub pas dej welded tuaj yeem ua tiav nrog cov hlau ntawm tib lub ntsiab lus raws li cov khoom siv austenitic tau welded. Hom 316 fillers feem ntau yog siv thaum vuam ferritic stainless hlau.
Qhov zoo:
- Zoo arc thiab weld pas pom kev pom thiab ua haujlwm yooj yim.
- Tsis muaj slag los yog slag me ntsis, tsis xav tau tom qab vuam slag tu.
- Argon roj tuaj yeem cais cov huab cua ib puag ncig zoo. Nws tus kheej yog insoluble hauv hlau thiab tsis hnov mob nrog hlau; lub arc kuj yuav tshem tawm cov oxide zaj duab xis ntawm qhov chaw ntawm lub workpiece thaum lub sij hawm tungsten argon arc vuam. Yog li ntawd, nws tuaj yeem ua tiav cov hlau tsis-ferrous hlau, stainless hlau, thiab ntau yam alloys uas yooj yim rau oxidize, nitride, thiab tshuaj lom neeg.
- Ruaj khov tungsten arc: Nws tuaj yeem kub hnyiab tau txawm tias nyob rau hauv ib qho me me vuam tam sim no (<10a), especially="" suitable="" for="" thin="" plate="" and="" ultra-thin="" plate="" material="">
- Cov khoom siv hluav taws xob thiab cov xaim xaim tuaj yeem tswj tau nyias, yog li cov khoom siv hluav taws xob tau yooj yim kho, vuam ntawm ntau txoj haujlwm tuaj yeem ua tau, thiab nws kuj yog ib txoj hauv kev zoo tshaj plaws kom paub txog kev sib txuas ib leeg thiab ob sab sib sau.
Qhov tsis txaus:
- Pem hauv ntej nkag mus, tsawg deposition tus nqi, thiab tsawg productivity.
- Lub peev xwm ntawm tungsten electrode nqa tam sim no tsis zoo. Cov tam sim no ntau dhau yuav ua rau cov tungsten electrode yaj thiab evaporate, thiab nws cov khoom tuaj yeem nkag mus rau hauv lub pas dej molten, thiab cov slag yuav ua qias tuaj (tungsten suav nrog).
- Inert gases (argon, helium) yog kim dua, thiab piv nrog rau lwm yam arc vuam txoj kev (xws li phau ntawv arc vuam, submerged arc vuam, CO2 roj shielded vuam, thiab lwm yam), tus nqi ntau lawm yog siab dua.
Daim ntawv thov
TIG vuam yog dav siv los vuam cov hlau tsis-ferrous xws li txhuas, magnesium, thiab lwm yam, uas yooj yim oxidized, thiab lawv cov alloys, stainless hlau, high-temperature alloys, titanium thiab titanium alloys, nrog rau refractory active hlau (xws li. Raws li molybdenum, niobium, zirconium, thiab lwm yam), thaum cov pa roj carbon dav dav, cov hlau tsis tshua muaj hlau, thiab lwm yam khoom siv, tshwj tsis yog rau qee lub sijhawm uas yuav tsum muaj vuam zoo, TIG vuam feem ntau tsis siv.
