MIG welding yog ib txoj kev vuam uas siv cov roj inert los tiv thaiv qhov chaw vuam, stabilizing lub arc thiab tiv thaiv kev hloov pauv hauv vuam zoo. Nws siv cov cua sov ntawm lub arc kom yaj cov hlau ntawm qhov chaw vuam, thiab cov xaim muab tub lim yog pub rau hauv los tsim qhov sib koom ua ke. Nws kuj tseem hu ua semi- tsis siv neeg vuam, tiv thaiv roj arc vuam, lossis carbon dioxide arc vuam.
Txij li thaum nws pib, lub tsheb kho lub cev feem ntau yog siv oxy-acetylene vuam, uas suav rau qhov ntim loj tshaj plaws ntawm kev ua haujlwm. Txawm hais tias qhov chaw vuam kuj tseem siv tau, nws daim ntawv thov tsuas yog siv rau thaj chaw tshwj xeeb, thiab qhov vuam zoo yog nyob ntawm qhov xwm txheej ntawm cov khoom siv, yog li kev ntseeg siab tsis tau lav. Arc vuam yog tsis tsim nyog rau vuam nyias daim hlau vim yog deformation ntau dhau. Brazing thiab soldering yog tsawg-kub vuam txoj kev; thaum lawv muab qhov zoo ntawm qhov me me deformation, lawv qhov tsis muaj zog txaus yog lub zog tsis txaus, ua rau lawv tsis tsim nyog rau kev sib txuas ntawm lub cev lub cev. Gas vuam yog maj mam raug txiav tawm vim qhov tseem ceeb thermal deformation thiab tom qab-weld oxidation.
Tsis ntev los no, lub tshuab vuam tshiab - MIG welding (Metal Inert Gas Arc Vuam) - tau siv dav hauv kev kho tsheb lub cev. MIG welding siv cov roj inert los tiv thaiv thaj chaw vuam, stabilizing lub arc thiab tiv thaiv kev hloov pauv hauv qhov zoo ntawm vuam. Nws siv cov cua sov ntawm lub arc kom yaj cov hlau ntawm qhov chaw vuam, thiab cov xaim muab tub lim yog pub rau hauv los tsim qhov sib koom ua ke. Nws kuj tseem hu ua semi- tsis siv neeg vuam, tiv thaiv roj arc vuam, lossis carbon dioxide arc vuam.