Vim Li CasCO₂ VuamSiv 80% Argon thiab 20% Carbon Dioxide?
Hauv kev lag luam MIG / MAG welding, cov roj sib tov ntawm **80% Argon + 20% Carbon Dioxide ** yog cov qauv siv dav tshaj plaws rau cov pa roj carbon steel thiab qis- alloy steel vuam. Qhov kev faib ua feem no tsis raug teeb tsa tab sis yog kev sib raug zoo rau kev sib npaug ntawm cov vuam ruaj khov, vuam zoo li, tswj kev sib tsoo, thiab cov nqi vuam. Ua ntej ntawm tag nrho cov, ntshiab carbon dioxide welding muaj pom tseeb shortcomings. Txawm hais tias CO₂ roj yog tsawg- tus nqi thiab muaj zog oxidation tsis kam thiab nkag mus tob, nws ua rau ** vuam loj spatter **, tsis ruaj tsis khov hluav taws xob arc, ntxhib weld hlaws zoo li, thiab nws yog ib qho yooj yim los tsim vuam tsis xws luag xws li pores thiab undercut. Nws kuj coj ntau tshaj tom qab-welding ua hauj lwm, uas txo cov efficiency ntau lawm. Ntshiab argon roj muaj zoo arc stability thiab yuav luag tsis muaj spatter. Lub vuam molding yog du thiab zoo nkauj. Txawm li cas los xij, argon yog kim, thiab cov ntshiab argon muaj qhov nkag tsis txaus rau cov pa roj carbon zoo tib yam. Nws tsis tuaj yeem ua tau raws li qhov yuav tsum tau muaj ntawm cov phaj tuab vuam, thiab tag nrho cov nqi vuam yog siab dhau rau cov khoom loj. Los ntawm kev sib xyaw ** 80% argon nrog 20% carbon dioxide **, ob lub roj sib xyaw ua ke zoo kawg nkaus. Argon ua lub luag haujlwm tseem ceeb hauv kev ruaj khov ntawm cov hluav taws xob arc, txo qhov tawg, txhim kho cov dej ntws ntawm lub pas dej molten, thiab ua kom cov npoo npoo tiaj tiaj thiab zoo{17}} tsim. Cov pa roj carbon dioxide muab cov thermal conductivity zoo thiab oxidation tsis kam, nce vuam nkag mus, txhim kho vuam fusion kev ua tau zoo, thiab zoo suppresses vuam pores. Qhov classic 80/20 piv no sib npaug ntau qhov zoo. Nws ua kom cov hluav taws xob arc mos thiab ruaj khov thaum lub sij hawm vuam txheej txheem, zoo heev txo spatter, txuag lub sij hawm rau kev sib tsoo thiab ntxuav tom qab vuam. Lub weld hlaws yog zoo huv si nrog cov xim sib xws, thiab cov khoom siv ntawm cov khoom sib txuas yog ruaj khov. Nyob rau tib lub sijhawm, nws tswj cov nqi roj hauv qhov tsim nyog, tsim nyog rau batch vuam hauv kev lag luam xws li steel qauv, tsheb tsim, kho vajtse, thiab engineering machinery. Hauv cov ntsiab lus, 80% Argon + 20% CO₂ tau dhau los ua cov khoom siv hluav taws xob tiv thaiv rau MAG vuam vim tias nws ua tiav qhov kev sib npaug zoo ntawm **arc stability, spatter tswj, vuam txoj kev, nkag mus rau kev ua tau zoo thiab cov nqi tsim khoom **, thiab nws yog tus nqi ntau tshaj -kev xaiv zoo rau niaj hnub muaj carbon steel vuam.
