Ukuweldaigesi edibeneyo yokukhuselayenzelwe ukuphucula umgangatho we welds. Iigesi ezifunekayo kwi-gas exutyiweyo nazo ziyi-welding ye-welding shielding gases ezifanaioksijini, umoya omdaka, iargon, njl Ukusebenzisa i-gas exutywe endaweni yegesi enye yokukhusela i-welding inesiphumo esihle sokucoca ngokuphawulekayo amaconsi atyhidiweyo, ukukhuthaza ukugudisa kwe-weld, ukuphucula ukubunjwa, kunye nokunciphisa izinga le-pores, kwaye ithandwa kakhulu kwi-welding, ukusika kunye namanye amashishini.

Okwangoku, eyona isetyenziswa ngokuqhelekileyoiigesi ezixubileyoingohlulwa ibe ziigesi ezixubeneyo zokubini kunye neegesi ezixubeneyo ze-ternary ngokohlobo lweegesi ezixubeneyo.

Umlinganiselo wecandelo ngalinye kudidi ngalunye lweigesi edibeneyozinokwahluka kuluhlu olukhulu, nto leyo emiselwa ikakhulu izinto ezininzi ezifana inkqubo welding, izinto welding, imodeli welding wire, njl. Ngokuqhelekileyo, iimfuno eziphezulu kumgangatho we-weld, ziphezulu iimfuno zokucoceka kwegesi enye esetyenziselwa ukulungisaigesi edibeneyo.

Amacandelo amabini eGas exutyiweyo

Argon+Oxygen

Ukongeza inani elifanelekileyoioksijiniukuya kwi-argon kunokuphucula ngokufanelekileyo ukuzinza kwe-arc kunye nokucokisa amathontsi atyhidiweyo. Iimpawu ezixhasa ukutsha kweoksijini zinokunyusa ubushushu besinyithi kwidama elinyibilikisiweyo, zikhuthaze ukuhamba kwesinyithi, zinciphise iziphene ze-welding, zenze i-weld ibe lula, kwaye ikhawulezise isantya se-welding kunye nokuphucula ukusebenza kakuhle kwe-welding. Ukongeza, i-oxygen + i-argon yokukhusela igesi inoluhlu olubanzi lokusetyenziswa kwaye ingasetyenziselwa i-welding carbon steel, i-alloy iron ephantsi kunye nensimbi engenasici yobunzima obahlukeneyo.

Argon+Carbon Dioxide

Ikharbhon dayoksayidi inokuphucula amandla eweld kunye nokumelana nomhlwa, kodwa ikharbon diokside emsulwa ekhusela irhasi itshiza kakhulu, nto leyo engayi kuncedayo ekusebenzeni kwabasebenzi. Ukuxuba kunye ne-argon ezinzileyo kunokunciphisa ngokufanelekileyo izinga lokutshiza kwesinyithi. Ukusebenzisa imilinganiselo eyahlukeneyo ye-oxygen + i-argon yokukhusela igesi ineenzuzo ezicacileyo zokuwelda intsimbi yekhabhoni kunye nentsimbi engatyiwa.

Argon+Hydrogen

Ihydrogenyigesi yokunciphisa igesi exhasa ukutshisa engakwazi nje ukunyusa ubushushu be-arc, isantya se-welding, kwaye ithintele i-undercutting, kodwa inciphisa amathuba okuba i-CO pores yenze kwaye ithintele iziphene ze-welding. Ineziphumo ezigqwesileyo zokuwelda kwi-alloys esekwe kwi-nickel, i-alloys ye-nickel-copper, kunye nentsimbi engenasici.

Amacandelo amathathu eGas exutyiweyo

IArgon+Oxygen+Carbon Dioxide

Le yeyona nto isetyenziswa kakhulu kwimixube yerhasi emithathu, eneziphumo ezidityanisiweyo ezikhuselayo zezi zinto zimbini zingasentla imixube yerhasi.Ioksijiniincedisa ukutsha, inokuphucula amathontsi atyhidiweyo, iphucule umgangatho we-weld kunye nesantya se-welding; ikharbon diokside inokuphucula amandla e-weld kunye nokumelana nokubola, kwaye i-argon inokunciphisa i-spatter. Kwi-welding ye-carbon steel, i-alloy iron ephantsi kunye nensimbi engenasici, lo mxube we-ternary gas unempembelelo engcono yokukhusela.

Argon+Helium+Carbon Dioxide

IHeliuminokunyusa igalelo lamandla obushushu, iphucule ukunyibilika kwechibi kunye nokukhuthaza ukubunjwa kwe-weld. Nangona kunjalo, ngenxa yokuba i-helium yigesi ye-inert, ayinayo impembelelo kwi-oxidation kunye nokutshiswa kwe-alloy ye-weld metal. Ngoko ke, ingasetyenziselwa i-carbon steel kunye ne-alloy ephantsi ye-alloy steel pulse jet arc welding, i-high-sight-high-steel, ngokukodwa-indawo yonke i-short-circuit transition welding, kunye nensimbi engenasici yonke indawo ye-short-circuit arc welding ngokulungelelanisa imilinganiselo eyahlukeneyo.