1, TIG welding feem ntau yog ib rab phom welding, lwm yam tes vuam hlau, haum rau kev ua haujlwm me me thiab kev kho ntawm phau ntawv vuam.
2, MIG thiab MAG, vuam hlau los ntawm cov hlau tsis siv neeg pub mis los ntawm rab phom vuam, haum rau vuam tsis siv neeg, tau kawg, koj tuaj yeem siv phau ntawv.
3, qhov sib txawv ntawm MIG thiab MAG feem ntau yog nyob rau hauv cov roj tiv thaiv. Cov cuab yeej zoo sib xws, tab sis yav dhau los yog feem ntau tiv thaiv los ntawm argon roj thiab tsim nyog rau vuam tsis-ferrous hlau; Cov tom kawg yog feem ntau doped nrog carbon dioxide active gas nyob rau hauv argon, uas yog haum rau welding high-strength steel thiab high-alloy steel.
4, TIG, MIG yog inert gas shielded vuam, feem ntau hu ua argon arc vuam. Cov roj inert tuaj yeem yog argon lossis helium, tab sis argon pheej yig, yog li nws feem ntau siv, yog li cov roj inert arc vuam feem ntau hu ua argon arc vuam.
Kev sib piv ntawm MIG vuam thiab TIG vuam
Kev sib piv ntawm MIG thiab TIG vuam MIG vuam (hlau inert gas welding) siv lub melting electrode.
Cov txheej txheem arc vuam, uas siv cov pa tawm sab nraud ua arc nruab nrab thiab tiv thaiv cov hlau tee, vuam pas dej ua ke thiab cov hlau kub kub hauv cheeb tsam vuam, hu ua MIG arc vuam.
Inert gas (Ar lossis He) arc vuam nrog cov tub ntxhais hlau yog hu ua MIG vuam, hu ua MIG vuam.
MIG vuam yog tib yam li TIG vuam tshwj tsis yog tias lub tungsten electrode nyob rau hauv lub teeb yog hloov los ntawm ib tug hlau hlau. Yog li ntawd, lub vuam hlau yog melted los ntawm arc thiab pub rau hauv vuam cheeb tsam. Lub tshuab hluav taws xob tsav cov menyuam xa cov xaim mus rau hauv lub teeb los ntawm lub spool raws li cov kev xav tau ntawm vuam, thiab cov cua kub kuj tseem yog DC arc.
Tab sis qhov polarity yog qhov txawv ntawm qhov uas siv hauv TIG vuam. Cov roj tiv thaiv siv kuj txawv, thiab 1% oxygen ntxiv rau argon los txhim kho qhov ruaj khov ntawm arc.
Zoo li TIG vuam, nws tuaj yeem vuam yuav luag txhua cov hlau, tshwj xeeb tshaj yog rau vuam txhuas thiab txhuas alloys, tooj liab thiab tooj liab alloys thiab stainless hlau thiab lwm yam ntaub ntawv. Yuav luag tsis muaj oxidation hlawv poob hauv cov txheej txheem vuam, tsuas yog me me ntawm evaporation poob, thiab cov txheej txheem metallurgical kuj yooj yim.
TIG Vuam (Tungsten Inert Gas Vuam), tseem hu ua non-molten inert gas tungsten vuam. Seb nws yog phau ntawv welding lossis tsis siv neeg vuam 0.5 ~ 4.0mm tuab stainless hlau, TIG vuam yog feem ntau siv vuam txoj kev.
Cov txheej txheem ntawm TIG vuam nrog cov xaim xaim yog feem ntau siv rau hauv qab vuam ntawm cov hlab ntsha siab, vim tias cov huab cua zoo dua ntawm TIG vuam tuaj yeem txo qhov porosity ntawm vuam thaum lub vuam ntawm lub siab capacitor.
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 A.
Txoj kev sib txuas kom raug ntawm lub tshuab vuam yog txuas lub workpiece mus rau qhov zoo electrode ntawm lub hwj huam mov, thiab cov tungsten electrode nyob rau hauv vuam teeb yog siv raws li qhov tsis zoo electrode.
Cov pa roj inert feem ntau yog argon, uas yog pub los ntawm vuam teeb los tsim ib daim ntaub thaiv nyob ib ncig ntawm lub arc thiab ntawm lub pas dej welding.
Txhawm rau ua kom cov cua sov nkag, 5% hydrogen feem ntau ntxiv rau argon. Txawm li cas los xij, thaum vuam ferritic stainless hlau, nws tsis tuaj yeem ua tau
Kev siv roj yog li 3 txog 8 litres ib feeb.
Thaum lub sij hawm vuam txheej txheem, ntxiv rau tshuab inert roj los ntawm lub teeb, nws yog qhov zoo tshaj plaws los tshuab roj los ntawm hauv qab vuam los tiv thaiv lub nraub qaum ntawm vuam.
Yog tias tsim nyog, lub pas dej welding tuaj yeem ua tiav nrog cov vuam hlau ntawm tib yam li cov khoom siv austenitic yuav tsum tau welded. Hom 316 muab tub lim feem ntau yog siv thaum vuam ferritic stainless hlau.
TIG vuam yog dav siv nyob rau hauv vuam vim kev tiv thaiv ntawm argon, uas muaj peev xwm cais cov teeb meem ntawm huab cua ntawm molten hlau.
Yooj yim oxidized non-ferrous aluminium, magnesium thiab nws cov alloys, stainless hlau, superalloy, titanium thiab titanium alloys, nrog rau refractory active hlau (xws li molybdenum, niobium, zirconium, thiab lwm yam), thiab dav carbon steel, tsawg alloy steel thiab Lwm cov ntaub ntawv zoo tib yam, ntxiv rau qhov kev xav tau ntawm vuam zoo ntawm lub sijhawm siab, feem ntau tsis siv TIG vuam.
